# Focus Meter vs Kazuasobi Math Drill

The clearest difference is in-app purchases: Kazuasobi Math Drill at none against Focus Meter's 1. Kazuasobi Math Drill also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Focus Meter sells 1 one-off in-app purchase. Kazuasobi Math Drill asks for nothing beyond the download.

Focus Meter ships an update every 6 days, Kazuasobi Math Drill every 10 days. The most recent releases landed on October 12, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Focus Meter | Kazuasobi Math Drill |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 6 days** | Every 10 days |
| Size | 9 MB | 16 MB |
| Requires iOS | **17.0** | 18.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [kazunari aoki](https://appshunter.io/developer/6774180811) | [nakagawa kenta](https://appshunter.io/developer/6785565981) |

## What reviewers say

### Focus Meter

[App page](https://appshunter.io/ios/app/focus-meter-study-timer/id6785273117)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Focus Meter Pro | $2.99 | one-time |


### Kazuasobi Math Drill

[App page](https://appshunter.io/ios/app/kazuasobi-math-drill/id6807497032)

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

**In-app purchases:** none


## Frequently asked questions

### Is Focus Meter free?

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

### Is Kazuasobi Math Drill free?

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

### Do Focus Meter or Kazuasobi Math Drill have ads?

Focus Meter shows ads; Kazuasobi Math Drill does not.

### Which is updated more often, Focus Meter or Kazuasobi Math Drill?

Focus Meter ships an update every 6 days, and Kazuasobi Math Drill every 10 days. Most recently, Focus Meter was updated on October 12, 2026 and Kazuasobi Math Drill on October 9, 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.*