# Subtraction with regrouping vs Third grade Math

The clearest difference is price: Subtraction with regrouping at $0.99 against Third grade Math's $2.99. Third grade Math's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 15.6). On update cadence, ads and in-app purchases there is nothing between them.

Subtraction with regrouping costs $0.99 and Third grade Math $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Subtraction with regrouping ships an update every 41 months, Third grade Math every 28 months. The most recent releases landed on September 14, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Subtraction with regrouping | Third grade Math |
| --- | --- | --- |
| Price | **$0.99** | $2.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 41 months | **Every 28 months** |
| Size | 7 MB | 17 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Red Hong](https://appshunter.io/developer/542314714) | [Sergey Malugin](https://appshunter.io/developer/562782409) |

## What reviewers say

### Subtraction with regrouping

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Third grade Math

[App page](https://appshunter.io/ios/app/third-grade-math-subtraction/id1271515324)

**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 Third grade Math free?

Third grade Math costs $2.99, with no in-app purchases.

### Do Subtraction with regrouping or Third grade Math have ads?

Neither Subtraction with regrouping nor Third grade Math shows ads.

### Which is updated more often, Subtraction with regrouping or Third grade Math?

Subtraction with regrouping ships an update every 41 months, and Third grade Math every 28 months. Most recently, Subtraction with regrouping was updated on September 14, 2026 and Third grade Math on September 8, 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.*