# Math Keyboard vs Just Calc.

The clearest difference is ads: Math Keyboard at none against Just Calc.'s shown. Just Calc.'s advantage is update cadence (weekly vs every 3 weeks) and iOS requirement (18.0 vs 26.2). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Math Keyboard sells 1 one-off in-app purchase and Just Calc. sells 9 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Math Keyboard ships an update every 3 weeks, Just Calc. weekly. The most recent releases landed on November 5, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Math Keyboard | Just Calc. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.4 (13 ratings)](https://appshunter.io/ios/app/math-keyboard-formula-input/id6757350527/reviews)** | — |
| Number of ratings | **13** | — |
| Positive reviews | 44.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 2 MB | 9 MB |
| Requires iOS | 26.2 | **18.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yuta Nishimatsu](https://appshunter.io/developer/1480004995) | [Yuqin Lin](https://appshunter.io/developer/6822245171) |

## 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, Vision Pro support

**In-app purchases (1)**

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


### Just Calc.

[App page](https://appshunter.io/ios/app/just-calc/id6822245169)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Minimalist | $0.99 | one-time |
| Color Blocks Pack | $0.99 | one-time |
| Neo Brutal Pack | $0.99 | one-time |
| Y2K Desktop Pack | $0.99 | one-time |
| Retro OS Pack | $0.99 | one-time |
| Pixel Pastel Pack | $0.99 | one-time |
| Doodle Pack | $0.99 | one-time |
| Summer Comic Pack | $0.99 | one-time |
| Unlock Premium | $7.99 | one-time |


## Frequently asked questions

### Is Math Keyboard free?

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

### Is Just Calc. free?

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

### Do Math Keyboard or Just Calc. have ads?

Just Calc. shows ads; Math Keyboard does not.

### Which is updated more often, Math Keyboard or Just Calc.?

Math Keyboard ships an update every 3 weeks, and Just Calc. weekly. Most recently, Math Keyboard was updated on November 5, 2026 and Just Calc. on November 10, 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.*