# Planet Math vs Cosuki

The clearest difference is ads: Cosuki at none against Planet Math's shown. Cosuki also leads on iOS requirement (13.0 vs 15.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Planet Math sells 7 in-app purchases, starting at $2.00 per month and Cosuki sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Planet Math ships an update every 2 weeks, Cosuki weekly. The most recent releases landed on October 25, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Planet Math | Cosuki |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (13 ratings)](https://appshunter.io/ios/app/planet-math/id6463144939/reviews)** | — |
| Number of ratings | **13** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 583 MB | 40 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Fezba Interactive Inc](https://appshunter.io/developer/1704006061) | [Khuselbayar Enkhmunkh](https://appshunter.io/developer/6807482270) |

## What reviewers say

### Planet Math

[App page](https://appshunter.io/ios/app/planet-math/id6463144939)

Master math skills through engaging gameplay with this teacher-approved learning game. It offers various modes, from basic arithmetic to advanced concepts, with competitive online play and leaderboards. Designed to make learning fun and rewarding for students of all levels.

**Highlights:** Teacher-approved educational design, Multiple game modes (Adventurer, Superhero, Brainiac, Mastermind), Covers arithmetic, fractions, algebra, geometry, calculus, Online battles and private rooms, Global leaderboards and achievements, Hand-drawn visuals and energetic soundtrack

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One Month Pack | $2.00 | per month |
| Three Month access | $4.00 | per 3 months |
| Six months of Premium Access | $6.00 | per 6 months |
| Twelve month Premium Access | $8.00 | per year |
| Silver Support | $1.99 | one-time |
| Gold Support | $4.99 | one-time |
| Platinum Support | $14.99 | one-time |


### Cosuki

[App page](https://appshunter.io/ios/app/cosuki-learn-algebra/id6807482268)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cosuki Plus | $4.99 | one-time |


## Frequently asked questions

### Is Planet Math free?

Planet Math is free to download, with in-app purchases available.

### Is Cosuki free?

Cosuki is free to download, with in-app purchases available.

### Do Planet Math or Cosuki have ads?

Planet Math shows ads; Cosuki does not.

### Which is updated more often, Planet Math or Cosuki?

Planet Math ships an update every 2 weeks, and Cosuki weekly. Most recently, Planet Math was updated on October 25, 2026 and Cosuki 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.*