# Add and subtract within 20 vs Brick Up

The clearest difference is update cadence: Brick Up at every 12 months against Add and subtract within 20's every 36 months. Add and subtract within 20's advantage is price ($2.99 vs $3.99) and iOS requirement (12.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

Add and subtract within 20 costs $2.99 and Brick Up $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Add and subtract within 20 ships an update every 36 months, Brick Up every 12 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Add and subtract within 20 | Brick Up |
| --- | --- | --- |
| Price | **$2.99** | $3.99 |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 36 months | **Every 12 months** |
| Monetization | Paid | — |
| Size | 18 MB | 16 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sergey Malugin](https://appshunter.io/developer/562782409) | [NumberClub](https://appshunter.io/developer/1843102274) |

## What reviewers say

### Add and subtract within 20

[App page](https://appshunter.io/ios/app/add-and-subtract-within-20/id757149544)

This app transforms math practice into an exciting adventure for children. It uses interactive mini-games and handwriting recognition to make learning addition and subtraction within 20 fun and effective. The difficulty adapts to your child's progress for a personalized experience.

**Highlights:** Interactive mini-games, Handwriting recognition, Adaptive difficulty, Targeted addition/subtraction practice, Natural learning input

**Features:** macOS Compatibility

**In-app purchases:** none


### Brick Up

[App page](https://appshunter.io/ios/app/brick-up/id6754166183)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Add and subtract within 20 free?

Add and subtract within 20 costs $2.99, with no in-app purchases.

### Is Brick Up free?

Brick Up costs $3.99, with no in-app purchases.

### Do Add and subtract within 20 or Brick Up have ads?

Neither Add and subtract within 20 nor Brick Up shows ads.

### Which is updated more often, Add and subtract within 20 or Brick Up?

Add and subtract within 20 ships an update every 36 months, and Brick Up every 12 months. Most recently, Add and subtract within 20 was updated on November 3, 2026 and Brick Up 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.*