# Build vs Rainbow Unicorn Math

The clearest difference is rating: Rainbow Unicorn Math at 5.0 against Build's 4.7. Rainbow Unicorn Math also leads on update cadence (every 3 days vs fortnightly). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Rainbow Unicorn Math holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 3 and 3 respectively.

Build ships an update fortnightly, Rainbow Unicorn Math every 3 days. The most recent releases landed on October 1, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Build | Rainbow Unicorn Math |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (3 ratings)](https://appshunter.io/ios/app/build-a-math/id1521174530/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/rainbow-unicorn-math/id6756394112/reviews)** |
| Number of ratings | 3 | 3 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 3 days** |
| Monetization | Free | Free |
| Size | 1 MB | 10 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Weiran Ye](https://appshunter.io/developer/481592104) | [RONALD HAU-SYANG CHENG](https://appshunter.io/developer/1860443064) |

## What reviewers say

### Build

[App page](https://appshunter.io/ios/app/build-a-math/id1521174530)

This app offers short, focused math drills for addition, subtraction, multiplication, and division. It provides instant feedback and tracks progress through engaging sessions designed for quick practice.

**Highlights:** Short, focused math practice sessions, Master addition, subtraction, multiplication, division, Instant feedback with haptics, color, and sound, Smart question rotation for confidence, Progress tracking and summaries, Works offline, no ads, no accounts

**Features:** macOS Compatibility

**In-app purchases:** none


### Rainbow Unicorn Math

[App page](https://appshunter.io/ios/app/rainbow-unicorn-math/id6756394112)

Embark on a colorful math adventure with a friendly unicorn. This app offers six engaging levels covering addition, subtraction, multiplication, and division, with adjustable difficulty for a personalized learning experience.

**Highlights:** Six math levels: Addition, Subtraction, Multiplication, Division, 15 difficulty options, 15 questions per game, Star-based scoring system, Colorful rainbow themes, Friendly unicorn companion

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Build free?

Build is free to download, with no in-app purchases.

### Is Rainbow Unicorn Math free?

Rainbow Unicorn Math is free to download, with no in-app purchases.

### Which has better reviews, Build or Rainbow Unicorn Math?

Rainbow Unicorn Math is rated higher. Build averages 4.7 out of 5 from 3 ratings, while Rainbow Unicorn Math averages 5.0 from 3 ratings.

### Do Build or Rainbow Unicorn Math have ads?

Neither Build nor Rainbow Unicorn Math shows ads.

### Which is updated more often, Build or Rainbow Unicorn Math?

Build ships an update fortnightly, and Rainbow Unicorn Math every 3 days. Most recently, Build was updated on October 1, 2026 and Rainbow Unicorn Math on September 28, 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.*