# Subtraction Math Master vs Misspelling Word Challenge

The clearest difference is in-app purchases: Misspelling Word Challenge at none against Subtraction Math Master's 1. Subtraction Math Master's advantage is iOS requirement (8.0 vs 13.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Subtraction Math Master sells 1 one-off in-app purchase. Misspelling Word Challenge asks for nothing beyond the download.

Subtraction Math Master ships an update every 18 months, Misspelling Word Challenge every 21 months. The most recent releases landed on October 14, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Subtraction Math Master | Misspelling Word Challenge |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 18 months** | Every 21 months |
| Monetization | Free with in-app purchases | — |
| Size | 4 MB | 96 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Peter Li](https://appshunter.io/developer/424298074) | [Hieu Hoang](https://appshunter.io/developer/1108291419) |

## What reviewers say

### Subtraction Math Master

[App page](https://appshunter.io/ios/app/subtraction-math-master/id672670414)

Enhance your mental math skills with this game focused on 2-digit subtraction. It offers modes for quick challenges and unlimited practice, helping you reduce calculator reliance and boost cognitive function.

**Highlights:** Improve 2-digit mental subtraction, Timed challenges and unlimited practice modes, Track scores and statistics, Game Center Leaderboards & Achievements, Share scores with friends and family, Stylish and intuitive interface

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| WORK MODE | $0.99 | one-time |


### Misspelling Word Challenge

[App page](https://appshunter.io/ios/app/misspelling-word-challenge/id1631587151)

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

**In-app purchases:** none


## Frequently asked questions

### Is Subtraction Math Master free?

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

### Is Misspelling Word Challenge free?

Misspelling Word Challenge is free to download, with no in-app purchases.

### Do Subtraction Math Master or Misspelling Word Challenge have ads?

Neither Subtraction Math Master nor Misspelling Word Challenge shows ads.

### Which is updated more often, Subtraction Math Master or Misspelling Word Challenge?

Subtraction Math Master ships an update every 18 months, and Misspelling Word Challenge every 21 months. Most recently, Subtraction Math Master was updated on October 14, 2026 and Misspelling Word Challenge on October 30, 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.*