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

The clearest difference is review sentiment: Sourcing Calculator 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%. Sourcing Calculator also leads on in-app purchases (none vs 1) and ads (none vs shown). 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 15.0). On price, 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. Sourcing Calculator asks for nothing beyond the download.

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, Sourcing Calculator every 9 days. Both last shipped on October 10, 2026.

## 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 | Sourcing Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 40.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 9 days** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 39 MB | 10 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Koji Watanabe](https://appshunter.io/developer/1332653587) | [Haruna Suganami](https://appshunter.io/developer/6791620393) |

## 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 |


### Sourcing Calculator

[App page](https://appshunter.io/ios/app/sourcing-calculator/id6791620391)

This tool helps cross-border resellers calculate profit and convert currencies accurately. It offers live exchange rates, fee management, and offline functionality for quick buy/pass decisions. A premium version unlocks advanced features for more complex calculations.

**Highlights:** Live currency conversion, Profit and margin calculation, Customizable fee registration, Offline rate caching, Multi-language support, Built-in arithmetic

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

**In-app purchases:** none


## 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 Sourcing Calculator free?

Sourcing Calculator is free to download, with no in-app purchases.

### 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 Sourcing Calculator 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; Sourcing Calculator 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 Sourcing Calculator?

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 Sourcing Calculator every 9 days. 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 October 10, 2026 and Sourcing Calculator on October 10, 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.*