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

The clearest difference is review sentiment: RuinRisk at 80% 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%. RuinRisk also leads on 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 monetization model (free with in-app purchases vs paid) and iOS requirement (13.0 vs 18.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. RuinRisk sells 1 one-off in-app purchase and 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. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 16, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | RuinRisk | FX_最適ロット計算機～許容損失額を一定にするアプリ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (1 ratings)](https://appshunter.io/ios/app/ruinrisk/id983505276/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | **80.0% of reviews** | 40.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 2 MB | 39 MB |
| Requires iOS | 18.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [RYUICHIROU SHIMONO](https://appshunter.io/developer/696880855) | [Koji Watanabe](https://appshunter.io/developer/1332653587) |

## What reviewers say

### RuinRisk

[App page](https://appshunter.io/ios/app/ruinrisk/id983505276)

Visualize your investment and trading risk with this intuitive calculator. Easily adjust parameters like risk per trade and win rate to understand your probability of ruin. Offers both basic and advanced analysis modes for beginners and experienced traders.

**Highlights:** Probability of Ruin Simulation, Heatmap Risk Visualization, Monte Carlo Simulations (Pro Mode), Maximum Drawdown Estimation (Pro Mode), Drawdown Probability Analysis (Pro Mode), Strategy Comparison

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RuinRisk Premium | $2.99 | one-time |


### 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 |


## Frequently asked questions

### Is RuinRisk free?

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

### 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.

### Do RuinRisk or FX_最適ロット計算機～許容損失額を一定にするアプリ 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; RuinRisk does not.

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

RuinRisk ships an update every 3 months, and FX_最適ロット計算機～許容損失額を一定にするアプリ every 3 months. Most recently, RuinRisk was updated on October 16, 2026 and FX_最適ロット計算機～許容損失額を一定にするアプリ 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.*