Math Keyboard vs Caliber
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Math Keyboard
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.
- 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
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Struggling to type math symbols on your phone? Math Keyboard is a custom keyboard that lets you input the symbols, Greek letters, superscripts, subscripts, and more commonly used in math and physics — directly from your keyboard. No more searching the web every time just to copy a symbol. From class notes and reports to chats and memos, type math expressions smoothly in any app. 【Key Features】 Superscript / subscript for numbers, letters, and symbols Full Greek alphabet support Rich set of math symbols (basic) Custom keyboard support 【Highlights】 Same look and feel as the standard keyboard Shift key to toggle superscript / subscript (or uppercase / lowercase) Easy tab switching within the keyboard Long-press the Space key to move the cursor Add and reorder categories 【About Pro】 The free version has limited categories. Upgrade to Pro to unlock all categories, including: Standard alphabet Advanced math symbols (calculus) Arrows Logic & sets Custom keyboard You can also switch the alphabet display style between italic and regular. ※ This in-app purchase is a one-time payment. ※ To use this keyboard, you need to add it and enable "Allow Full Access" in the Settings app. (We do not collect any of your input — your privacy is fully protected.)
Caliber
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פלטפורמה לניהול, מיון והערכה של מועמדים לשירות קרבי המשמשת את סגל הבוחנים לארגון והשוואה של ביצועי המועמדים במשימות פיזיות, קוגניטיביות, חברתיות, טכניות ועוד
Screenshots
Verdict
The clearest difference is in-app purchases: Caliber at none against Math Keyboard's 1. Caliber also leads on update cadence (every 5 days vs every 5 weeks) and iOS requirement (16.0 vs 26.2). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Math Keyboard sells 1 one-off in-app purchase. Caliber asks for nothing beyond the download.
Math Keyboard ships an update every 5 weeks, Caliber every 5 days. The most recent releases landed on October 10, 2026 and October 14, 2026 respectively.
| Parameter | Math Keyboard | Caliber |
|---|---|---|
| Price | Free | Free |
| Rating | 2.5 (4 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 5 weeks | Every 5 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 26.2 | 16.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 74 MB |
| Age rating | 4+ | 4+ |
| Developer | Yuta Nishimatsu | Gilad Opher |
In-app purchases
Math Keyboard
- MathKeyboard Pro$5.99
Caliber
No in-app purchases
