# FX LotSize — Useful tools for FX

> Useful tools for FX (iPhone/iPad app by yuki kawahito.)

- Source: https://appshunter.io/ios/app/fx-lotsize/id6445845651 (this page in markdown: same URL + `.md`)
- Developer: [yuki kawahito](https://appshunter.io/developer/1668178650)
- Category: Finance, Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 18.0 · 8 MB
- Languages: American English, Japanese
- Released: 2023-07-24
- Data updated: 2026-09-04
- User reviews in markdown: https://appshunter.io/ios/app/fx-lotsize/id6445845651/reviews.md

## What is FX LotSize?

How to use the app

Lot calculation tool
You can calculate the appropriate lot when entering FX (holding a position).

1. Set the currency pair

2. Enter the margin (account balance)

3. Set the loss tolerance as a percentage of the margin

4. Finally, enter the stop loss

5. Tap the calculate button to display the appropriate lot.

Profit and loss ratio tool

1. Set the profit lock pips (take profit)

2. Set the loss tolerance pips (stop loss)

3. Automatically display risk reward


Settings
Regarding the currency of 1 lot, please check the information of your trading company and set it. The default is set to 10,000 currency per lot.

The loss tolerance (%) can be changed to the % set when the app is launched.

The currency pair at launch can be changed to the currency pair set when the app is launched.

The currency pair list can be listed as you like.
The only currency pairs available in the free version are USD/JPY and EUR/USD/GBP/JPY.
If you want to calculate lots for other currency pairs, you will need to upgrade.
After upgrading, you will be able to use all currency pairs without any charge.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

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



## Version history (last 5 releases)

### 1.7 — 2025-08-13

Localization has been added

### 1.6 — 2025-08-10

レイアウトの修正

### 1.5 — 2023-07-28

バグの修正を行いました。

### 1.4 — 2023-07-27

バグの修正を行いました。

### 1.2 — 2023-07-24

新しいiOS versionに対応しました。

## Apps similar to FX LotSize

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [FX Position Calculator](https://appshunter.io/ios/app/fx-position-calculator/id1673065546) | 4.5 (8) | Free | Finance |
| [FXロット自動計算・トレンドナビ](https://appshunter.io/ios/app/fx/id1672256208) | — | Free | Finance |
| [FX_最適ロット計算機～許容損失額を一定にするアプリ](https://appshunter.io/ios/app/fx/id1566085690) | — | Free | Finance |
| [Forex Pip & Lot Calculator](https://appshunter.io/ios/app/forex-pip-and-lot-calculator/id1643165408) | 4.3 (10) | Free | Finance |
| [FX Position Size Calculator](https://appshunter.io/ios/app/fx-position-size-calculator/id1640692777) | 4.7 (227) | Free | Finance |
| [Forex Size Calculator: Posica](https://appshunter.io/ios/app/forex-size-calculator-posica/id1610887335) | — | Free | Finance |

## More apps by yuki kawahito

- [MyWordStudy](https://appshunter.io/ios/app/mywordstudy/id1668604855)
- [FX Lot](https://appshunter.io/ios/app/fx-lot/id6740450469)

All apps by yuki kawahito: https://appshunter.io/developer/1668178650

## Related topics

[ncalc fx](https://appshunter.io/ios/topics/ncalc-fx)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-04.*