# Position Size Calculator vs Signal Sizer

The clearest difference is update cadence: Signal Sizer at monthly against Position Size Calculator's every 3 months. Signal Sizer also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.6). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Position Size Calculator sells 5 in-app purchases, starting at $2.99 per 7 days and Signal Sizer sells 1 in-app purchase, starting at $2.49 per 7 days. Whichever you choose, the download price is not the number that matters.

Position Size Calculator ships an update every 3 months, Signal Sizer monthly. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Position Size Calculator | Signal Sizer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/position-size-calculator-grid/id6743808232/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | Subscription | — |
| Size | 6 MB | 10 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Christoph Stadelbauer](https://appshunter.io/developer/1746084312) | [Jean Pierre Djidiack FAYE](https://appshunter.io/developer/6789154647) |

## What reviewers say

### Position Size Calculator

[App page](https://appshunter.io/ios/app/position-size-calculator-grid/id6743808232)

This app provides quick and accurate lot size calculations for various trading instruments directly on your mobile device. It supports Forex, Metals, Commodities, Indices, and Crypto, with a customizable instrument library and support for all major account currencies.

**Highlights:** Accurate lot size calculations, Supports Forex, Metals, Commodities, Indices, Crypto, Customizable contract size, tick size, tick value, Built-in instrument library, Works with all major account currencies, Fast and minimal interface

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Grid Premium | $2.99 | per 7 days |
| Grid Premium | $4.99 | per 7 days |
| Grid Premium | $19.99 | per year |
| Grid Premium | $29.99 | per year |
| Grid Premium Lifetime | $89.99 | one-time |


### Signal Sizer

[App page](https://appshunter.io/ios/app/signal-sizer/id6789154645)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Signal Sizer Premium | $2.49 | per 7 days |


## Frequently asked questions

### Is Position Size Calculator free?

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

### Is Signal Sizer free?

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

### Do Position Size Calculator or Signal Sizer have ads?

Neither Position Size Calculator nor Signal Sizer shows ads.

### Which is updated more often, Position Size Calculator or Signal Sizer?

Position Size Calculator ships an update every 3 months, and Signal Sizer monthly. Most recently, Position Size Calculator was updated on October 30, 2026 and Signal Sizer on November 5, 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.*