# Subtraction with regrouping vs Master Math Fun

The clearest difference is price: Master Math Fun at Free against Subtraction with regrouping's $0.99. Master Math Fun also leads on update cadence (every 4 days vs every 41 months) and device support (3 vs 1). On ads and in-app purchases there is nothing between them.

Master Math Fun is free to download; Subtraction with regrouping costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Subtraction with regrouping ships an update every 41 months, Master Math Fun every 4 days. The most recent releases landed on September 14, 2026 and May 17, 2026 respectively.

## The numbers

| Metric | Subtraction with regrouping | Master Math Fun |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 41 months | **Every 4 days** |
| Size | 7 MB | 137 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Red Hong](https://appshunter.io/developer/542314714) | [Grzegorz Kiernozek](https://appshunter.io/developer/1441207704) |

## What reviewers say

### Subtraction with regrouping

[App page](https://appshunter.io/ios/app/subtraction-with-regrouping/id838762880)

**Features:** macOS Compatibility

**In-app purchases:** none


### Master Math Fun

[App page](https://appshunter.io/ios/app/master-math-fun/id6754071490)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Subtraction with regrouping free?

Subtraction with regrouping costs $0.99, with no in-app purchases.

### Is Master Math Fun free?

Master Math Fun is free to download, with no in-app purchases.

### Do Subtraction with regrouping or Master Math Fun have ads?

Neither Subtraction with regrouping nor Master Math Fun shows ads.

### Which is updated more often, Subtraction with regrouping or Master Math Fun?

Subtraction with regrouping ships an update every 41 months, and Master Math Fun every 4 days. Most recently, Subtraction with regrouping was updated on September 14, 2026 and Master Math Fun on May 17, 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.*