# Subtraction School ! ! vs Subtraction with regrouping

The clearest difference is ads: Subtraction with regrouping at none against Subtraction School ! !'s shown. Subtraction with regrouping also leads on price ($0.99 vs $4.99). Subtraction School ! !'s advantage is update cadence (every 12 months vs every 41 months) and device support (3 vs 1). On in-app purchases and iOS requirement there is nothing between them.

Subtraction School ! ! costs $4.99 and Subtraction with regrouping $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Subtraction School ! ! ships an update every 12 months, Subtraction with regrouping every 41 months. The most recent releases landed on November 6, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Subtraction School ! ! | Subtraction with regrouping |
| --- | --- | --- |
| Price | $4.99 | **$0.99** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/subtraction-school/id447548515/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 12 months** | Every 41 months |
| Monetization | Paid | — |
| Size | 13 MB | 7 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Horizon Business, Inc.](https://appshunter.io/developer/431586531) | [Red Hong](https://appshunter.io/developer/542314714) |

## What reviewers say

### Subtraction School ! !

[App page](https://appshunter.io/ios/app/subtraction-school/id447548515)

Master subtraction with this educational app. It offers practice from single-digit to multi-digit problems, with guided tutorials and hints to help users learn step-by-step.

**Highlights:** 1 to 6 digit problems, Random or custom problems, Tutorial animation speed, Step-by-step solution guide, Hint button for guidance, Help button for step completion

**Features:** macOS Compatibility

**In-app purchases:** none


### Subtraction with regrouping

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Subtraction School ! ! free?

Subtraction School ! ! costs $4.99, with no in-app purchases.

### Is Subtraction with regrouping free?

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

### Do Subtraction School ! ! or Subtraction with regrouping have ads?

Subtraction School ! ! shows ads; Subtraction with regrouping does not.

### Which is updated more often, Subtraction School ! ! or Subtraction with regrouping?

Subtraction School ! ! ships an update every 12 months, and Subtraction with regrouping every 41 months. Most recently, Subtraction School ! ! was updated on November 6, 2026 and Subtraction with regrouping on October 26, 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.*