# RuinRisk vs FX LotSize

The clearest difference is in-app purchases: RuinRisk at none against FX LotSize's 1. FX LotSize's advantage is update cadence (every 3 days vs every 5 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. FX LotSize sells 1 one-off in-app purchase. RuinRisk asks for nothing beyond the download.

RuinRisk ships an update every 5 months, FX LotSize every 3 days. The most recent releases landed on September 10, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | RuinRisk | FX LotSize |
| --- | --- | --- |
| 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 | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 days** |
| Monetization | Paid | — |
| Size | 2 MB | 8 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [RYUICHIROU SHIMONO](https://appshunter.io/developer/696880855) | [yuki kawahito](https://appshunter.io/developer/1668178650) |

## 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:** Vision Pro support

**In-app purchases:** none


### FX LotSize

[App page](https://appshunter.io/ios/app/fx-lotsize/id6445845651)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| All Currency Pair | $5.99 | one-time |


## Frequently asked questions

### Is RuinRisk free?

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

### Is FX LotSize free?

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

### Do RuinRisk or FX LotSize have ads?

Neither RuinRisk nor FX LotSize shows ads.

### Which is updated more often, RuinRisk or FX LotSize?

RuinRisk ships an update every 5 months, and FX LotSize every 3 days. Most recently, RuinRisk was updated on September 10, 2026 and FX LotSize on September 18, 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.*