JongKey vs Grapheme
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
JongKey
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JongKey is a custom keyboard app that makes it easy to input mahjong tiles. Perfect for recording mahjong games, "What to discard?" discussions, and sharing on social media - making mahjong communication more enjoyable and convenient! 【Key Features】 • Easy input for all 34 types of mahjong tiles and tile backs • Supports two output formats: Unicode emoji and MPS notation • Quick input with intuitive tap operations • Supports Japanese, English, and Chinese (Simplified & Traditional) 【How to Use】 1. Add "JongKey" to keyboards in Settings app 2. Switch keyboards by tapping the globe icon in messaging apps 3. Tap mahjong tiles to input 【Output Formats】 • Unicode: Mahjong tile characters (displayed as emoji) • MPS notation: E S W N, 1m 2m 3m etc. (displayed as text) ※Full Access not required. Your input is not transmitted externally.
Grapheme
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Grapheme is a pocket museum of the characters the world writes with, as Unicode records them. The entire code space is laid out in one grid, grouped by block and ready to wander. A COLLECTION FULL OF SURPRISES • The complete Unicode 16 code space, organized by block • Wander from Egyptian hieroglyphs to alchemical symbols, Byzantine musical notation, mahjong tiles, and emoji • Jump to any block instantly with the block picker, and pin the ones you visit most • Even characters your device has no font for get a meaningful placeholder glyph, so nothing shows up as an empty box CHARACTER DETAILS AT A TAP Tap any cell to see everything about that character: • Official Unicode name and block • Code point in U+ notation • Byte encodings: UTF-8, UTF-16 (BE and LE), UTF-32 (BE and LE) • HTML entity FAST SEARCH • Find characters by name: try “snowman”, “dragon”, or “pile of poo” • Look up a code point directly by its hex value • Paste in any text to see the code points it breaks down into, including the ZWJ sequences inside an emoji FAVORITES • Mark characters you use often and come back to them in one tap WORKS COMPLETELY OFFLINE The full Unicode 16 character database ships inside the app. Browse, search, and inspect encodings anywhere, with no network connection required. MADE FOR DEVELOPERS, DESIGNERS, AND THE CURIOUS Debugging a text-encoding issue? Hunting for the perfect arrow, box-drawing character, or mathematical symbol? Exploring ancient scripts and the far reaches of the astral planes? Grapheme puts the entire Unicode standard at your fingertips.
Screenshots
Verdict
The clearest difference is update cadence: JongKey at daily against Grapheme's every 3 days. On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
JongKey ships an update daily, Grapheme every 3 days. The most recent releases landed on October 11, 2026 and October 25, 2026 respectively.
| Parameter | JongKey | Grapheme |
|---|---|---|
| Price | Free | Free |
| Update frequency | Daily — better | Every 3 days |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 17.6 — better | 18.2 |
| Further details — not scored | ||
| Size | 6 MB | 51 MB |
| Age rating | 4+ | 4+ |
| Developer | Yuki Takeda | Hsingchien Cheng |
In-app purchases
JongKey
No in-app purchases
Grapheme
No in-app purchases









