# Math Keyboard vs あとで買うたぶん

The clearest difference is in-app purchases: あとで買うたぶん at none against Math Keyboard's 1. あとで買うたぶん also leads on iOS requirement (18.0 vs 26.2). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Math Keyboard sells 1 one-off in-app purchase. あとで買うたぶん asks for nothing beyond the download.

Math Keyboard ships an update every 5 weeks, あとで買うたぶん every 3 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Math Keyboard | あとで買うたぶん |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (12 ratings)](https://appshunter.io/ios/app/math-keyboard-formula-input/id6757350527/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 2 MB | 2 MB |
| Requires iOS | 26.2 | **18.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Yuta Nishimatsu](https://appshunter.io/developer/1480004995) | [Yuka Yasuda](https://appshunter.io/developer/1624485955) |

## What reviewers say

### Math Keyboard

[App page](https://appshunter.io/ios/app/math-keyboard-formula-input/id6757350527)

This custom keyboard simplifies typing mathematical and physics symbols, including Greek letters and superscripts/subscripts. Seamlessly input formulas into any app without needing to copy and paste from external sources. Enhance your notes, reports, and messages with ease.

**Highlights:** Superscripts/subscripts for numbers, letters, and symbols, Greek letters support, Wide variety of math symbols, Familiar keyboard layout, Quick tab switching, Cursor control via long-press

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MathKeyboard Pro | $5.99 | one-time |


### あとで買うたぶん

[App page](https://appshunter.io/ios/app/id6799799716)

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

**In-app purchases:** none


## Frequently asked questions

### Is Math Keyboard free?

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

### Is あとで買うたぶん free?

あとで買うたぶん is free to download, with no in-app purchases.

### Do Math Keyboard or あとで買うたぶん have ads?

Neither Math Keyboard nor あとで買うたぶん shows ads.

### Which is updated more often, Math Keyboard or あとで買うたぶん?

Math Keyboard ships an update every 5 weeks, and あとで買うたぶん every 3 weeks. Most recently, Math Keyboard was updated on October 24, 2026 and あとで買うたぶん 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.*