# Math Sphere vs Counter

The clearest difference is in-app purchases: Math Sphere at none against Counter's 3. Math Sphere also leads on ads (none vs shown) and update cadence (every 3 weeks vs every 4 months). On price and device support there is nothing between them.

Both are free to download. Counter sells 3 in-app purchases, starting at $0.99 per month. Math Sphere asks for nothing beyond the download.

Math Sphere ships an update every 3 weeks, Counter every 4 months. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Math Sphere | Counter |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Size | 25 MB | 12 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [otsuki hayato](https://appshunter.io/developer/1828600192) | [Krzysztof Korybko](https://appshunter.io/developer/1631343451) |

## What reviewers say

### Math Sphere

[App page](https://appshunter.io/ios/app/math-sphere/id6749747366)

**Features:** macOS Compatibility

**In-app purchases:** none


### Counter

[App page](https://appshunter.io/ios/app/counter-tally-and-habit-tracker/id6758995768)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Counter Pro (Monthly) | $0.99 | per month |
| Counter Pro (Yearly) | $9.99 | per year |
| Counter Pro (Lifetime) | $19.99 | one-time |


## Frequently asked questions

### Is Math Sphere free?

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

### Is Counter free?

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

### Do Math Sphere or Counter have ads?

Counter shows ads; Math Sphere does not.

### Which is updated more often, Math Sphere or Counter?

Math Sphere ships an update every 3 weeks, and Counter every 4 months. Most recently, Math Sphere was updated on October 30, 2026 and Counter on October 25, 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.*