# Forex Size Calculator vs FX LotSize

The clearest difference is update cadence: FX LotSize at every 3 days against Forex Size Calculator's every 28 months. Forex Size Calculator's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 18.0). On price, ads and in-app purchases there is nothing between them.

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

Forex Size Calculator ships an update every 28 months, FX LotSize every 3 days. The most recent releases landed on October 10, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Forex Size Calculator | FX LotSize |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 28 months | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 10 MB | 8 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Doga Bayram](https://appshunter.io/developer/1446226385) | [yuki kawahito](https://appshunter.io/developer/1668178650) |

## What reviewers say

### Forex Size Calculator

[App page](https://appshunter.io/ios/app/forex-size-calculator-posica/id1610887335)

This app helps Forex traders calculate their correct position size and risk percentage. It provides an instant overview of your position size to help you set your stop-loss effectively. Supports a wide range of currency pairs and XAUUSD.

**Highlights:** Calculate correct position size, Calculate risk in percentage, Instant position size overview, Stop-loss setting assistance, Supports numerous currency pairs, Includes XAUUSD

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium 20+ Currencies | $19.99 | one-time |


### 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 Forex Size Calculator free?

Forex Size Calculator is free to download, with in-app purchases available.

### Is FX LotSize free?

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

### Do Forex Size Calculator or FX LotSize have ads?

Neither Forex Size Calculator nor FX LotSize shows ads.

### Which is updated more often, Forex Size Calculator or FX LotSize?

Forex Size Calculator ships an update every 28 months, and FX LotSize every 3 days. Most recently, Forex Size Calculator was updated on October 10, 2026 and FX LotSize on October 22, 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.*