Math Keyboard vs 字韵
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.)
字韵
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字韵是一款专业的汉字读音查询与转换工具,带你穿越时空,探索汉字读音的源流与演变。 核心功能 多种读音转换 中古音:查询汉字的中古汉语发音(《切韵》音系),适合古典诗词研究、音韵学学习 拼音:现代汉语标准拼音,支持声调标注 音读:日语汉字音读(吴音、汉音等) 方言读音:支持多种汉语方言读音查询 简繁转换 支持简体字与繁体字双向转换 中古音查询建议输入繁体字以获得更准确结果 对照模式 一键开启对照模式,并排显示不同读音系统 方便对比中古音与现代音、汉语与日语的对应关系 实用工具 历史记录:自动保存所有转换记录,支持搜索和批量管理 收藏功能:收藏常用汉字或生僻字,支持导出/导入备份 分享与复制:一键分享转换结果或复制到剪贴板 深色模式:支持明暗主题切换,呵护双眼 适用人群 语言学、音韵学研究者与学生 古典诗词、古文爱好者 日语学习者(汉字音读查询) 方言研究与学习者 对汉字文化感兴趣的普通用户 使用提示 中古音查询建议输入繁体字,可获得更准确的发音结果。对照模式下可同时查看多种音系,方便对比研究。
Screenshots
Verdict
The clearest difference is in-app purchases: 字韵 at none against Math Keyboard's 1. 字韵 also leads on iOS requirement (13.0 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. 字韵 asks for nothing beyond the download.
| Parameter | Math Keyboard | 字韵 |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (12 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 12 — better | — |
| Update frequency | Every 5 weeks | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 26.2 | 13.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | Yuta Nishimatsu | 其诺 吕 |
In-app purchases
Math Keyboard
- MathKeyboard Pro$5.99
字韵
No in-app purchases









