# FX_最適ロット計算機～許容損失額を一定にするアプリ vs ForeXpert

The clearest difference is review sentiment: ForeXpert at 100% against FX_最適ロット計算機～許容損失額を一定にするアプリ's 40%. ForeXpert also leads on ads (none vs shown) and update cadence (every 2 weeks vs every 3 months). FX_最適ロット計算機～許容損失額を一定にするアプリ's advantage is iOS requirement (13.0 vs 15.1). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. FX_最適ロット計算機～許容損失額を一定にするアプリ sells 1 in-app purchase, starting at $2.99 per month and ForeXpert sells 1 in-app purchase, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

FX_最適ロット計算機～許容損失額を一定にするアプリ ships an update every 3 months, ForeXpert every 2 weeks. The most recent releases landed on September 14, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | FX_最適ロット計算機～許容損失額を一定にするアプリ | ForeXpert |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 40.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 39 MB | 55 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Koji Watanabe](https://appshunter.io/developer/1332653587) | [Rui Hirano](https://appshunter.io/developer/1663659809) |

## What reviewers say

### FX_最適ロット計算機～許容損失額を一定にするアプリ

[App page](https://appshunter.io/ios/app/fx/id1566085690)

Calculate optimal trade lot sizes based on your acceptable loss amount. This app helps manage risk for Forex and CFD trading, making it suitable for beginners. It supports various currencies, indices, and CFD sizes for precise position adjustments.

**Highlights:** Calculate lot size from acceptable loss, Supports Forex, Gold, Nikkei 225, and Dow Jones, Handles various currency and CFD sizes, Rounds lot numbers to the second decimal place, Real-time position size calculation, Supports stop-loss price for lot calculation

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアム機能 | $2.99 | per month |


### ForeXpert

[App page](https://appshunter.io/ios/app/forexpert-forex-backtest/id6476443077)

Practice discretionary trading on historical forex charts without risking real money. Step through past price action candle by candle, place real orders, and measure your results with detailed performance statistics. Test your trading strategies and improve your execution skills on the go.

**Highlights:** Realistic backtesting on historical charts, 26 instruments across 8 timeframes, Full order types (Market, Limit, Stop), Technical analysis and drawing tools, Detailed performance statistics, Customizable trading parameters, Cloud sync across devices

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ForeXpert プレミアムプラン | $6.99 | per month |


## Frequently asked questions

### Is FX_最適ロット計算機～許容損失額を一定にするアプリ free?

FX_最適ロット計算機～許容損失額を一定にするアプリ is free to download, with in-app purchases available.

### Is ForeXpert free?

ForeXpert is free to download, with in-app purchases available.

### Do FX_最適ロット計算機～許容損失額を一定にするアプリ or ForeXpert have ads?

FX_最適ロット計算機～許容損失額を一定にするアプリ shows ads; ForeXpert does not.

### Which is updated more often, FX_最適ロット計算機～許容損失額を一定にするアプリ or ForeXpert?

FX_最適ロット計算機～許容損失額を一定にするアプリ ships an update every 3 months, and ForeXpert every 2 weeks. Most recently, FX_最適ロット計算機～許容損失額を一定にするアプリ was updated on September 14, 2026 and ForeXpert on September 17, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*