# Learn Subtraction vs Marni

The clearest difference is in-app purchases: Marni at none against Learn Subtraction's 1. Marni also leads on ads (none vs shown) and update cadence (daily vs every 6 months). On price and device support there is nothing between them.

Both are free to download. Learn Subtraction sells 1 one-off in-app purchase. Marni asks for nothing beyond the download.

Learn Subtraction ships an update every 6 months, Marni daily. The most recent releases landed on October 11, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Learn Subtraction | Marni |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (23 ratings)](https://appshunter.io/ios/app/learn-subtraction-math-kids/id1352299219/reviews)** | — |
| Number of ratings | **23** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 48 MB | 20 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hosam Mohammed](https://appshunter.io/developer/1211689744) | [Saachi Techonologies Private Limited](https://appshunter.io/developer/1496780656) |

## What reviewers say

### Learn Subtraction

[App page](https://appshunter.io/ios/app/learn-subtraction-math-kids/id1352299219)

This app offers an interactive and visual approach to mastering subtraction for young learners. It features step-by-step animated guidance, various practice modes, and customizable settings to make math engaging and easy to understand.

**Highlights:** Step-by-step visual subtraction, Practice and challenge modes, Customizable animation speeds, Clear error guidance, Child-friendly interface, Multiple background themes

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Learn Subtraction – Pro Version | $0.99 | one-time |


### Marni

[App page](https://appshunter.io/ios/app/marni/id6741690686)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Learn Subtraction free?

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

### Is Marni free?

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

### Do Learn Subtraction or Marni have ads?

Learn Subtraction shows ads; Marni does not.

### Which is updated more often, Learn Subtraction or Marni?

Learn Subtraction ships an update every 6 months, and Marni daily. Most recently, Learn Subtraction was updated on October 11, 2026 and Marni on October 7, 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.*