Chiroptera

4.55

Prop Firm Ready! Chiroptera is a non-martingale, non-grid, multi-currency Expert Advisor that operates in the quiet hours of the night. It uses single-placed trades (of all 28 pairs!) with tactically placed Take Profits and Stop Losses, that are continuously adjusted to maximize gains and minimize losses. It keeps track of past and upcoming news reports to ensure impacts are minimized and carefully measures real-time volatility to prevent impacts due to unpredictable geo-political disturbances caused by Tweets and other ad-hoc events, and exploits an advanced learning algorithm to ensure asset allocation is applied most optimally. Chiroptera only trades a few hours daily, during the quiet hours, and keeps client assets out of the market during the busiest (and unpredictable) times of day.

After you purchase the EA send me a direct message for recommendations on brokers.

Live Performance

  • Global Prime (default settings)
  • [New] Fusion Markets (Remove TP and Limits at rollover entry - Set to True to prevent slippage)

Unique Features that set Chiroptera apart from other Expert Advisors:

  1. it places single trades and does not employ martingale, grid or any other methods that are mathematically guaranteed to fail
  2. it is only actively trading for 2-3 hours every day: outside of that assets are out of the market and sitting safe with the broker
  3. it places limit orders in order to prevent slippage and execution delays, which negates the need for a low-latency VPS
  4. it modulates the incoming broker price feed in order to ensure a most optimal limit order placement, independent of broker spread
  5. it monitors multiple price feed aspects such as volume and price spikes in real time, to ensure ad-hoc and non-announced events (e.g. Tweets about tariffs) are monitored
  6. it connects to a live news server that allows it to monitor holidays, and impacts of past and future news events using advanced Pearson correlation calculations for future news pattern impacts
  7. it uses an advanced, time exponentially weighed, adaptive learning algorithm to calculate which symbols perform best for a specific broker based on historical performance. Allow the first 60 days to 'learn' the right conditions. This effect will show in backtest as a very 'flat growth curve' during the first 60 days of back-testing
  8. it sends real-time user notifications to user's MT5 Mobile App so users can monitor EA performance in real-time and monitor e.g. slippage and margin levels
  9. It prints detailed performance metrics in Baretail for in-depth evaluations during backtest (download Baretail from Baremetalsoft and open 'PrintMonitor' file from 'Common' folder in backtest)
  10. BE AWARE THAT IN BACKTEST THE EA USES THE FIRST 60 DAYS FOR LEARNING AND WILL ONLY TRADE MINIMUM LOTSIZE (TYPICALLY 0.01). THESE 60 DAYS ARE NOT NEEDED ON A LIVE ACCOUNT (AS IT USES A PRE-LEARNED FILE)

Input parameters and default Values

  • Magic = 12345; // Magic number allowing Chiroptera to run smoothly next to other EAs on the same account
  • Run All Pairs= true; // allows to attach Chiroptera to one chart and run all currencies. 'False' will run Chiroptera only on the current symbol 
  • Pairs="EURUSD;GBPUSD;AUDCAD;AUDNZD;EURAUD;EURCAD;GBPAUD;GBPCAD;EURCHF;GBPCHF;USDJPY;EURJPY;USDCAD;EURGBP;USDCHF;CADCHF;CHFJPY;AUDJPY;AUDCHF;AUDUSD;GBPJPY"; // List of pairs that Chiroptera runs on effectively
  • Trade Comment="Chiroptera"; // trade comment that can be adjusted by the user
  • UseGoldForGMTOffset=true; // Uses Gold to automatically determine GMT offset. If errors occur select 'false' and report the issue to the developer
  • RiskFactor=1.0; // Average lotSize = RiskFactor * balance (in USD) / contractsize (so a RiskFactor of 1.0 and account balance of 100,000 equates to an average of 1.0 lot per pair) 
  • StopLoss=1300; // In points (0=no Stoploss)
  • [NEW] Remove TP and Limits Through Rollover (1655-1805 NYT); // Use this option if you experience slippage through the entire rollover window (MAKE SURE TO BACKTEST THIS)
  • [NEW] Remove TP and Limits at rollover entry (1655-1710 NYT); // Use this option if you experience slippage at rollover entry (MAKE SURE TO BACKTEST THIS)
  • [NEW] Remove TP and Limits at rollover exit (1755-1805 NYT); // Use this option if you experience slippage at rollover exit (MAKE SURE TO BACKTEST THIS)
  • Trade Friday session 1st half; // Trade Friday before the weekend (will hold trades over the weekend)
  • Trade Friday session 2nd half; // Trade Friday session past the weekend
  • UseLearning=true; //Allows the EA to learn optimal lotsizes in backtest using machine learning
  • ChiroStartDate=""; // Chiroptera automatically determines the correct start date when this EA started operating on the selected pairs; if this date is wrong you can use this parameter for a custom start date. Format is e.g. 2025.11.30-->this is NOT REQUIRED
  • WriteWeightsFile=false; //Allows to create custom weightsfile in backtest-->this is NOT REQUIRED
  • MinProfitToSwapRatio=5.0;// Ensures that the maximum profit of each trade is AT LEAST 5 times the swap. This filter disengages automatically after rollover (0=no check)
  • MinProfitToCommissionRatio=0;// Ensures that the maximum profit of each trade is AT LEAST xx times the commission (0=no check)
  • MaxSpreadPts=0;// Prevents symbols from trading when max spread is violated (0=no check)
  • MinProfitPts=0;// Prevents symbols from trading when minimum allowable profit cannot be attained (0=no check)
  • RewardsProgram=true; // Contact developer to be included in Chiroptera rewards program (0=no check for rewards program)
  • SlippageNotifyThreshold=20; // Sends notification to user on MT5 Mobile App if Sendnotifications is enabled, if negative slippage on entry or exit is larger than threshold (-1 is no notifications)
  • MarginLevelNotificationThreshold=100;// Notifies users on MT5 Mobile App if margin level drops below 100% (0=no check)
  • PrintSessionReports=false; // Prints in terminal the session performance reports after each session
  • PrintAdaptiveData=false; // Prints in terminal the pair performance list after each session
  • PrintNews=true; // Prints in terminal all pertinent news
  • PrintNewsBlocking=true; // Prints in terminal if news is blocking (and why)
  • PrintHolidaysBlocking=true; // Prints in terminal if holidays are blocking
  • SendNotifications=true; // Allows users to receive real-time performance notifications in MT5 App. Please see below for how to use this feature

Usage on live account

  • PLEASE CONTACT US TO DISCUSS BROKERS
  • Recommend to run on ECN Raw/Zero Spread account. 
  • Attach Chiroptera to a chart e.g. 'EURUSD' or 'EURUSD+' or 'EURUSD-ECN', make sure to choose the correct symbol if your broker uses prefix or suffix (this is typical for Raw / ECN accounts). Timeframe is irrelevant. 
  • Chiroptera will discover any pre- or suffixes automatically. No need to add the prefix or suffix for pairs in the EA parameters 
  • If desiring to receive performance reports in MT5 Mobile app: Place MetaQuotes ID in MT5 Terminal 'Tools'-->'Notifications' section, check 'Enable Push Notifications' and set 'SendNotifications' in the EA to true
  • Chiroptera uses an advanced, time exponentially weighted filter to learn which are the best pairs (this is broker specific), for which it reads historical trade data. In backtest, this will take 60 days before it converges (it will trade the minimum lotsize up till then). On a live account, it will read pre-learning parameters from an embedded weightsfile. Custom weightsfiles can also be generated, please watch the below video (this is NOT required). Be aware that if creating the custom file on a different computer then where you are running the live account (e.g. on a VPS), the file has to be copied over (it is located in the 'Common' folder). Creation of custom weightsfiles will NOT work on MQL5 VPS as MQL5 VPS does not synchronize the 'Common' folder. Once again using this feature is NOT required.

Usage in Strategy Tester

  • Run Chiroptera on one symbol only. Timeframe is irrelevant. 
  • Chiroptera EA has the News file embedded as a resource. Embedded News is up-to-date until the release date of the version you are using and updated each time a new version is released.
  • For the use of 'Baretail' to see detailed performance metrics during backtest in a separate window, please download Baretail from BareMetalSoft and open the 'PrintMonitor' file that is created in your 'Common' folder at the start of your backtest.
  • Optimal performance in backtest (or on a live account) will start when the adaptive lotsize algorithm has learned the optimal solution for lotsizes. This happens after 60 days. Before that expect generally worse performance in backtest. During these first 60 days of learning the EA will only trade the minimum lotsize (typically 0.01 lots)

Please send me a Direct Message if anything is unclear!

Reviews 60
Nuttapon Maneechote
570
Nuttapon Maneechote 2026.11.11 14:16 

I've been using it for 10 months, and it's a really good Expert Advisor (EA).

Toffeeman88
379
Toffeeman88 2026.11.09 11:35 

Cracking EA - Super consistent and profitable and unlike any other in the market so great for diversification. Set and forget - highly recommend

kwikky69
304
kwikky69 2026.11.06 10:05 

A proper set-and-forget EA Really enjoying Chiroptera so far. One of the biggest compliments I can give it is that I don't feel the need to keep checking the charts every five minutes. The entries and exits are clearly handled by the system, and once it is set up, you can largely leave it to do what it was designed to do. I particularly like the logic behind it. It looks for opportunities during quieter trading periods and takes market conditions, volatility and news into consideration rather than simply jumping into trades constantly. It also uses individual trades rather than martingale or grid-style recovery. The trading and results have been very encouraging for me, while the overall approach feels controlled and considered rather than aggressive. The other big positive is the developer support from creator Rob, which is genuinely outstanding. Questions are answered properly, help is there when needed, and you get the feeling that the developer is actively supporting and improving the system rather than simply selling an EA and disappearing. For anyone like me who wants automation without having to babysit charts all day, Chiroptera ticks a lot of boxes. Set it up, let it work, and get on with your day. Very happy with it.

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Lycan is the bigger brother of Chiroptera. As Chiroptera, it employs single-trade trades only, with clearly defined stoploss and takeprofits, and operates on all 28 major and minor pairs. As opposed to Chiroptera operating only at night and on the M5 timeframe, Lycan operates at all times and operates on the H1 timeframe , making it the perfect EA for any broker and any conditions. Default settings are recommended for all brokers. For backtest you do not need to use all ticks:  1-minute OHLC wil
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Nuttapon Maneechote
570
Nuttapon Maneechote 2026.11.11 14:16 

I've been using it for 10 months, and it's a really good Expert Advisor (EA).

Toffeeman88
379
Toffeeman88 2026.11.09 11:35 

Cracking EA - Super consistent and profitable and unlike any other in the market so great for diversification. Set and forget - highly recommend

kwikky69
304
kwikky69 2026.11.06 10:05 

A proper set-and-forget EA Really enjoying Chiroptera so far. One of the biggest compliments I can give it is that I don't feel the need to keep checking the charts every five minutes. The entries and exits are clearly handled by the system, and once it is set up, you can largely leave it to do what it was designed to do. I particularly like the logic behind it. It looks for opportunities during quieter trading periods and takes market conditions, volatility and news into consideration rather than simply jumping into trades constantly. It also uses individual trades rather than martingale or grid-style recovery. The trading and results have been very encouraging for me, while the overall approach feels controlled and considered rather than aggressive. The other big positive is the developer support from creator Rob, which is genuinely outstanding. Questions are answered properly, help is there when needed, and you get the feeling that the developer is actively supporting and improving the system rather than simply selling an EA and disappearing. For anyone like me who wants automation without having to babysit charts all day, Chiroptera ticks a lot of boxes. Set it up, let it work, and get on with your day. Very happy with it.

Ellis Jack Kington
220
Ellis Jack Kington 2026.11.04 15:49 

have been using chiro since release and has been a very profitable bot for me built well just relies on finding a good broker for it

robvon86
487
robvon86 2026.10.18 20:01 

For me its the best performing EA in long term, thank you

Rob Josephus Maria Janssen
3358
Reply from developer Rob Josephus Maria Janssen 2026.10.20 12:45
Thanks Rob!
Steelk10
199
Steelk10 2026.10.18 17:10 

Have been running this EA since June and it has produced steady profits similar to the live signal. Rob is always helpful and quick to respond.

Rob Josephus Maria Janssen
3358
Reply from developer Rob Josephus Maria Janssen 2026.10.18 17:31
Thank you Steel. Great to see this EA keeps providing profits to people!
Barricade84
60
Barricade84 2026.09.04 21:08 

This EA is a scam. If you read the negative reviews, it tells you why, so I will not explain (arbitrage). Brokers are blocking and closing accounts. Also, the losses are far higher than the profits. Because of the broker issue and the big losses, the author has limited the risk level which you can use. This is actually a good idea, as you lose your money slower than previously. Bad bad bad.

Carlos Alberto Castillo Luzon
534
Carlos Alberto Castillo Luzon 2026.08.13 17:18 

Lastly, the wins doesn't cover the loses. Using with TMGM

Rob Josephus Maria Janssen
3358
Reply from developer Rob Josephus Maria Janssen 2026.08.14 12:30
Who told you TMGM would work for this EA? It is important that the broker has tight spreads around rollover. This is not the case for TMGM
Apex EHJH
134
Apex EHJH 2026.08.02 17:54 

I have used Chiroptera for circa 8 weeks; by far he best ea I’ve have used. Rob is also very helpful and responsive

shino1486
755
shino1486 2026.08.02 06:48 

I’ve been using it for three months since I purchased it. It seems the results vary significantly depending on the broker. With the ECN account I use, my approximate monthly return after commissions is 18%, which differs greatly from the results presented by the author. However, a monthly return of 18% is certainly a more than satisfactory result. Sometimes trades across multiple currency pairs remain open from the weekend into the start of the week. In these cases, no one can predict whether the swap will be positive or negative, or how the market will move based on economic developments over the weekend. Taking all of this into account, I really appreciate that I can leave it completely unattended 24 hours a day, 365 days a year. My portfolio has very few profitable strategies—just a gold breakout strategy and some AUD/CAD averaging—so this EA is incredibly important to me.

Drightiger
137
Drightiger 2026.07.11 20:09 

I've been using Chiroptera since late April and I genuinely cannot get enough of it - I absolutely adore it. The fact that last month brokers set out to ban/limit Chiroptera honestly tells you everything you need to know about this EA. The author is heavily involved in the community and responds to general queries, questions etc with speed and accuracy and fights for us with the brokers. Yes, Chiro has had a bad couple of weeks in the past, but in the past 4 weeks of trading at least, I honestly don't think I've had a single losing day. I am however frustrated with the authors decision to limit the interal-EA risk (it was on an scale of 1-20 and he released a mandatory update that capped it at 3), the author has said this is because of the brokers and for the overall stability of Chiro on a larger scale, but still incredibly frustrating, but I have not let this fact change my honest 5-star review. Thanks, keep up the good work!

Trung John
1490
Trung John 2026.06.25 06:11 

It keeps making losses day after day even though I was using the default setting . I've turned it off until the seller proves it can generate solid results. I'm using ICMarkets and it is killing my account balance everyday

Rob Josephus Maria Janssen
3358
Reply from developer Rob Josephus Maria Janssen 2026.06.25 06:28
Trung, please contact me directly to see if anything is wrong with your setup or if you are using a broker with too much slippage. Also understand that this is not a martingale EA, and therefore losses are absolutely normal
Michael Schuster
1684
Michael Schuster 2026.06.18 15:24 

I don't understand the users' reactions. Of course, there are nights and especially weekends when events can change the trend. The EA handles such situations very well. In my case, Chiroptera has performed exceptionally well over the past few weeks and has recouped my investment several times over. I also don't understand the discussions with the brokers. It sounds far-fetched to me that accounts would be banned, suspended, or anything like that because of an EA. Overall, I can only say that Chiroptera is currently my best-performing EA. Keep up the good work! 👍

Rob Josephus Maria Janssen
3358
Reply from developer Rob Josephus Maria Janssen 2026.06.18 22:13
Thanks Michael
Michael John Malkinson
900
Michael John Malkinson 2026.06.17 12:37 

Updated review - after leaving a neutral review a while ago, the EA has made a little profit almost everyday since, so im happy with it. I think its very broker dependant, but for me its going good so far

bc01
545
bc01 2026.06.16 23:10 

big loss again, i am turning this EA off, not recommended

Bifrost
1405
Bifrost 2026.06.15 06:51 

This EA performance is too good to be true.

Rob Josephus Maria Janssen
3358
Reply from developer Rob Josephus Maria Janssen 2026.06.16 20:18
I don't know who you are but I truly appreciate you pissing off the guy below you
EA--TESTER--REALMONEY
1634
EA--TESTER--REALMONEY 2026.06.14 23:06 

After testing this EA only for a short time it made me clear that it is just another crap EA with good marketing that should not be in the Top Positions on the market.

! Attention, the Seller deleted some of his Live Signals after the last losses, that only happens when a Seller don´t want to be transparent and show the truth to the clients. For the Sellers the sales must go on as long as possible, before the bad reviews are incoming !

It´s everytime the same game...

The trading logic of this EA is simple. It opens a trade on each Forex pair every day one hour before market close (long or short) and hopes that they are going in the right direction. That´s all.

!!! Another very important Point is that some Brokers e.g. Blueberry don´t like this EA. In the Chiroptera private Telegram Group (I was in there too) there are complaints by users, that their broker has issued them a warning. When they go on using this EA they will get their account closed, because of the trading style of the EA.

Important to know: Many brokers have issues with strategies that exploit pricing errors, delayed data feeds, or short-term spread anomalies. This is often referred to as:

Spread Hunting

Latency Arbitrage

Quote Arbitrage

Tick Arbitrage

Such strategies can violate a broker's terms and conditions, even if the EA itself is technically functioning correctly.

It seems to me that there are many Fake Reviews too because after all the losing days the last week there are still incoming positive reviews from new buyers, what makes no sense.

Screenshots of the last trades on different brokers you can find in the comments and in my profile as always.

I stopped using this bad EA and advise every new trader to find a better one.

***

Edit after his answer: "I called Vantage (as I am a partner with them) and they clarified that they and their subsidiaries (VT,Ultima,Moneta,PuPrime) have found that this EA gave them too much loss, as they trade against the client. They can take a certain amount of that, but not as much as Chiroptera was offsetting them with."

That´s the craziest excuse I have ever heard from a EA Seller, after he was removing his Live Signals from the Market directly after the EA made big losses.

I see only 2 possibilities: 1. They closed your Trading Accounts because Chiroptera doesn´t comply with their terms and conditions as I discribed in my Review regarding Blueberry Broker or 2. because of the losses it made the last week.

Nice try but nobody will believe you this excuse...

Rob Josephus Maria Janssen
3358
Reply from developer Rob Josephus Maria Janssen 2026.06.16 20:52
Lol. Even my most inexperienced clients understand you cannot judge an EA after only a few days of testing. EDIT: as you clearly have no clue what’s going on I’ll elaborate here quickly. I called Vantage (as I am a partner with them) and they clarified that they and their subsidiaries (VT,Ultima,Moneta,PuPrime) have found that this EA made too much profit, as they trade against the client. They can take a certain amount of that, but not as much as Chiroptera was offsetting them with. You of all people (supposedly per your ‘experience’) should know how this works. A way forward will be found with other brokers and under different trading conditions for this EA. If you are still adamant about what you are stating above, provide proof that any of this is true: it is not. Chiroptera has gone through this process several times and not once has the broker been able to surrender any proof of anything you are saying. So you are just making things up. I understand you are bitter because of the money you have lost in the past, but this does not give you the right to make things up and damage the results of a phenomenal EA. Stop spamming people. Do not show up on any developers feed until you can provide actual proof of anything you say.
Imm Timm
142
Imm Timm 2026.06.12 08:48 

Worked okay before but consecutive losses for a few weeks now. Most of the profit which was made, was taken by commission. Live trade data doest not match the live account results. Too frequent updates.

Rob Josephus Maria Janssen
3358
Reply from developer Rob Josephus Maria Janssen 2026.06.16 21:15
Imm Timm, for a non-martingale, non-grid Expert Advisor losses are absolutely normal. A commission filter was added that allows clients to set the minimum profit compared to commission, which will allow you to prevent stepping in to trades that appear to be making minimal profit compared to the commmission cost. And no need to worry about calculating anything, the EA will do all the math. Yes, there were a few back to back updates but these had to occur as many clients had specific requests and broker dependent settings that needed to be accounted for to use this EA per their broker settings. This is simply a developer accommodating those requests as soon as possible, I understand the reason might not be always be visible to someone that things are working for on their broker. But I hope this explanation helps, contact me directly for any specific questions. This EA is recovering from it's loss as we speak and will reach new highs exactly as it is designed to work.
aczares
102
aczares 2026.06.10 09:50 

Leaving a review after using this for more than a month. I would say this is probably my favorite EA so far. Looking back, the journey to become profitable with this was kinda fun. I bought this when it was still imperative to generate your own weightfile, which I didn't want to do since I didn't want to migrate away from using mql5 vps. Good thing is, Rob released the version that has an embedded weightfile already, making backtesting for our own weightfile optional. Jumping off from this topic, I would say the dev is really on top of his game--updates are fast whenever he sees something that can be improved or was suggested by the community.

As for the profits, please be aware that this isn't a grid/martingale where every day/week/month is a winner. This is also repeated again and again by the dev. You will find that some days, you will be in loss. Some you will have profits but only small. And some days, you might be in profit but the commissions ate all of them up. That is normal. You will be rewarded with days where you'll get 0.5%. And you have a potentially larger chance for profit on Fridays (favorite day btw) where your acct growth can shoot way up. Another thing I would like to point out is how splashable this is in your portfolio. It doesn't really compete with all your other EAs since it only trades in a very specific time interval, so it's a perfect addition to your bot collection.

I've been rambling a bit but overall, this is a pretty good EA!

Quentin Trimble
51
Quentin Trimble 2026.06.06 13:35 

I've been running Chiroptera for a short while now, and my early impressions are quite good. What really impresses me is how carefully it handles risk — the stop loss and take profit levels feel well thought out, not just randomly placed and left to chance. The trades are executed in a controlled, systematic way that gives me more confidence. I'm curious to see how it performs over the long run, but based on what I've seen so far, this EA is definitely worth keeping an eye on.

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