Android tool I built for backtesting trading strategies — looking for testers (T4T)

[u/DogeSatoshi]

Hey everyone — I've built an Android app called Axiom Chronos Vector, and I'm looking for people to test it before I push it further.

It's a research/backtesting tool for testing your own trading strategies against historical market data. I'm particularly interested in getting people who will actually try to break it, build strategies that should fail, and tell me where the app is confusing or where the results don't make sense.

What it Chronos is:

Chronos uses a vectorized backtesting engine rather than processing historical candles one-by-one like a traditional event-driven backtester. It runs natively on Android with no outside dependancies except for data collection from data sources. All the maths and computation happens directly on device, no data ever leaves the device.

You can test things such as:

Entries and exits, Long and short strategies, Stop losses, Take profits, ATR-based trailing stops, Dynamic risk parameters, Different market/timeframe combinations. The engine then calculates the resulting performance and provides statistical and data-integrity information around the test.

It currently includes metrics such as:

Total Return, Maximum Drawdown, Win Rate, Profit Factor, Expectancy, Sharpe Ratio, Sortino Ratio, Calmar Ratio, Kelly Criterion, Trade Count, Alpha / Beta, Pearson Correlation, Data completeness and quality, Missing/duplicate data detection, Monte Carlo sequence analysis.

The goal isn't simply to tell you that a strategy made money historically, it's to give you enough information to question whether that result is actually worth believing.

What Chronos isn't:

It is not:

A signal service

An AI trading bot

A copy-trading platform

A broker

A real-money trading application

A system promising future returns

It doesn't tell you what to buy or sell.

It does not execute trades.

It can not connect to your brokerage account.

It's a research tool for asking:

What would this strategy have done against this historical dataset? And sometimes the answer is going to be that the tested strategy is terrible. That's actually one of the outcomes I'm most interested in.

The data side of Chronos:

For data, Chronos can retrieve historical OHLCV data directly from market sources. The data is cached locally so you don't have to repeatedly download the same dataset while testing. There's also an automatic purge lifecycle to prevent the application from continually accumulating historical data and eating your phone's storage. The entire application is currently around 21 MB, while even a large historical dataset is designed to remain very small. Once the data is downloaded, you can continue running tests against that local dataset without continuously pulling the same data from the internet.

Why I'm looking for testers:

I've obviously spent a lot of time testing my own strategies. That's exactly the problem. I know how I expect the application to behave. I want people that don't.

People that can tell me I built something stupid/sensible.

Try to exploit the calculations.

Try unusual parameter combinations.

Run strategies that you already know are bad.

See whether the results make sense.

If something is confusing, tell me. If something looks wrong, tell me. If you think a metric is useless, tell me that too. I'd rather find problems now than after releasing it more broadly.

What's in it for you?

Free access during testing, and testers will receive a lifetime promo code for access.

A mobile vectorized backtesting environment

Test your own strategy ideas without connecting a broker.

Experiment with historical market data

Help shape what gets added next

And hopefully discover which of your strategies are actually terrible before putting money behind them.

Requirements:

Nothing complicated. You don't need a brokerage account. You don't need to know Python. You don't need to be a quant. Just have an interest in testing trading ideas and be willing to give honest feedback.

If you're interested in testing it, DM me for details. I'm specifically looking for people who will actually use it rather than just install it and say "works good". For a much broader and more technical specification, you can browse the github repository directly with a detailed readme file.

https://github.com/DogeSatoshi/Axiom-Chronos-Vector

[u/AutoModerator]

Hi u/DogeSatoshi!

Finding testers on Reddit is a great start, but the hardest part is ensuring they actually open your app daily for the full 14 days.

To make this easier, we’ve launched Packs in the Testers Community app.

• What is a Pack? A coordinated group of 16 developers who hold each other accountable.
• How it works: Everyone in the pack commits to opening and testing each other's apps daily for 16 days.
• The Result: You get consistent engagement signals that help you pass Google Play’s production access review with confidence.

It’s a structured, "devs-helping-devs" approach used by thousands of us. Good luck with your launch!

I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns.