# Math Keyboard vs イヤホンアラーム目覚まし　電車・オフィス昼寝の寝過ごし防止

The clearest difference is in-app purchases: イヤホンアラーム目覚まし　電車・オフィス昼寝の寝過ごし防止 at none against Math Keyboard's 1. イヤホンアラーム目覚まし　電車・オフィス昼寝の寝過ごし防止 also leads on iOS requirement (17.0 vs 26.2). Math Keyboard's advantage is ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. Math Keyboard sells 1 one-off in-app purchase. イヤホンアラーム目覚まし　電車・オフィス昼寝の寝過ごし防止 asks for nothing beyond the download.

Math Keyboard ships an update every 5 weeks, イヤホンアラーム目覚まし　電車・オフィス昼寝の寝過ごし防止 every 4 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | Math Keyboard | イヤホンアラーム目覚まし　電車・オフィス昼寝の寝過ごし防止 |
| --- | --- | --- |
| 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** | Yes |
| Update frequency | Every 5 weeks | **Every 4 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 2 MB | 44 MB |
| Requires iOS | 26.2 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Yuta Nishimatsu](https://appshunter.io/developer/1480004995) | [Tokiharu Kitaoka](https://appshunter.io/developer/1880717017) |

## 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 |


### イヤホンアラーム目覚まし　電車・オフィス昼寝の寝過ごし防止

[App page](https://appshunter.io/ios/app/id6759798112)

**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 イヤホンアラーム目覚まし　電車・オフィス昼寝の寝過ごし防止 free?

イヤホンアラーム目覚まし　電車・オフィス昼寝の寝過ごし防止 is free to download, with no in-app purchases.

### Do Math Keyboard or イヤホンアラーム目覚まし　電車・オフィス昼寝の寝過ごし防止 have ads?

イヤホンアラーム目覚まし　電車・オフィス昼寝の寝過ごし防止 shows ads; Math Keyboard does not.

### Which is updated more often, Math Keyboard or イヤホンアラーム目覚まし　電車・オフィス昼寝の寝過ごし防止?

Math Keyboard ships an update every 5 weeks, and イヤホンアラーム目覚まし　電車・オフィス昼寝の寝過ごし防止 every 4 weeks. Most recently, Math Keyboard was updated on October 24, 2026 and イヤホンアラーム目覚まし　電車・オフィス昼寝の寝過ごし防止 on October 24, 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.*