# Contra - System trading tool — EA/Backtesting/Trading Alerts

> Develop, backtest, and automate Forex trading strategies with technical indicators. (iPhone/iPad app by Riverage, Inc..)

- Source: https://appshunter.io/ios/app/contra-system-trading-tool/id1517309358 (this page in markdown: same URL + `.md`)
- Developer: [Riverage, Inc.](https://appshunter.io/developer/1517309357)
- Category: Finance, Education
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 11.0 · 32 MB
- Languages: American English
- Released: 2020-06-08
- Data updated: 2026-06-10
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/contra-system-trading-tool/id1517309358/reviews.md

## What is Contra?

Contra has all the features to make you a strategic systems trader

Do you have a strategy in your current Forex trading rules?
Would you like to create your own automated trading system?

Contra has a range of features from Lv1 to Lv4
Lv1~Lv4 functions to refine your Forex strategy

Lv1: Create trading rules by running backtests
Create your own trading system by combining more than 30 technical indicators and price actions.
The system you create will be analyzed using more than 20 indicators such as win rate, payoff ratio, drawdown, average holding period, and so on.
But if you can't create your own rules, don't worry!
You can refer to past back-tests that are publicly available.

Lv2. forward testing of your favorite systems
Register a good trading system as your favorite and turn on the simulate function.
You can check its performance in the current market in real time.
In other words, you can set up a real-time forward test with a single tap!
In addition, use the forward test reports automatically generated at the end of each week to improve your performance!

Lv.3 System Trade Buy/Sell Signal Notification
When your simulated system trade issues a buy or sell signal, you can receive a notification on your smartphone.
In other words, you can become a system trader by trading according to these notifications!

Lv4 Conversion of trading system to automatic trading EA
System trades created with the application can be converted into EAs.
Use "Contra EA" to convert your favorites into EAs!
There is no need to use EAs created by others anymore!
Your rules in the app will be converted directly into an EA!

With Contra, you can live your trading life like this!
Run a back test on the app
→Subscribe to forward test to see if it actually works
→Check the results in the weekly report to further improve the accuracy.
→Convert to your own EA and perform automated trading (or receive trading signal notifications and perform trading)
→Create other types of rules in the application to build your portfolio


In addition, we support traders with other functions such as
Real-time currency alerts
Receive notifications of sudden rises and falls in the market
Chart function
Check the technical indicators and price actions available in Contra by drawing them on the actual chart.
Extensive resources for higher level trading
https://contra.jp/にてシステムトレードに必要な情報や, recommended trading rules, etc. are available at any time.


What is Contra?
The world is full of fraudulent FX information products.
If you are not careful, you may often be swept away without thinking for yourself.
That is why it is important to have the ability to think for yourself and verify with your own hands.
I hope that as many people as possible will use this application as a tool to resist such a trend in the world.
With this wish in mind, we have named the app Contra (against the tide).

Contra is a service that will continue to grow with you.
We are committed to improving our service and to make it available to as many people as possible.
We are looking forward to receiving your feedback on the features you would like to see improved or added, as well as your highly positive reviews.


Established in 2021 riverage Inc.
Contra Project Members

## Key features

- Create trading rules with 30+ indicators
- Backtest strategies with performance analysis
- Real-time forward testing of systems
- Receive buy/sell signal notifications
- Convert trading systems to EAs
- Real-time currency alerts
- Chart function with technical indicators

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Alert plan | $7.99 | per month |
| Bronze plan | $39.99 | per month |
| Silver plan | $79.99 | per month |
| Gold plan | $149.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Premium indicators package | $29.99 | one-time |
| Price actions package | $34.99 | one-time |
| All indicators package | $59.99 | one-time |
| Single indicator purchase | $3.99 | one-time |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/contra-system-trading-tool/id1517309358/reviews.md

### 5/5 — No-code MT5 EA is very useful

*2022-12-10, version 2.1*

This app is sophisticated compared to other apps.
Not only EA conversion, backtesting, system trading alerts, and indicator charts are awesome.
This app make my trading better.
I’m sincerely waiting for the additional price action and backtesting features.

## Frequently asked questions about Contra

### What is Contra's primary function?

Contra is designed to help users create, backtest, and automate their own Forex trading systems. It allows for the development of strategies using various technical indicators and price actions.

### Can I test my trading strategies before using real money?

Yes, Contra offers robust backtesting features to analyze strategy performance using historical data. It also includes a real-time forward testing function to simulate performance in current market conditions.

### Does Contra provide trading signals?

Yes, Contra can notify you on your smartphone when your simulated system trade issues a buy or sell signal. This allows you to trade according to these notifications.

### Can I automate my trading with Contra?

Yes, Contra allows you to convert your created trading systems into Expert Advisors (EAs). This enables automated trading based on your custom rules.

### What are the subscription plans for Contra?

Contra offers several subscription plans including an Alert plan ($7.99/month), Bronze plan ($39.99/month), Silver plan ($79.99/month), and Gold plan ($149.99/month). All plans offer a 7-day free trial.

### Is Contra available on multiple devices?

Contra is supported on iPhone, iPad, and iPod. The app is designed for iOS devices.

### How often is Contra updated?

The latest version of Contra is 2.2.3, and it was last updated on February 17, 2023. Updates are released periodically to improve functionality and add features.

### What is the user sentiment for Contra?

Contra has received a rating of 5.0 stars from 1 rating, indicating a highly positive user sentiment based on available data.

## Version history (last 5 releases)

### 2.2.3 — 2023-02-17

Fixed an issue with saving favorites and chart display in backtest results.

### 2.2.2 — 2023-01-18

Backtest results allow you to see the chart at the time of each trade
Easier to check and manage the history of demo trades and system trades
Improved chart operation
We look forward to your feedback for further improvements!

### 2.2.1 — 2022-12-12

bug fix

### 2.2 — 2022-12-11

Addition of notification function and forward testing, introduction of paid plans, and UI improvements

### 2.1 — 2022-09-05

Add five tabs (Backtesting, Favorites, Charts, Signals, Mypage)

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All apps by Riverage, Inc.: https://appshunter.io/developer/1517309357

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*