MergeKey vs Wurstfinger
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MergeKey
This keyboard dynamically adjusts key sizes and visibility as you type, offering larger tap targets and fewer errors. It supports 20 languages and includes customizable styles and privacy-focused features.
- Dynamic key resizing
- Hides impossible keys
- Supports 20 languages
- Customizable styles
- Privacy-focused
- Typing game
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MergeKey — the first keyboard that hides the keys you don't need. As you type, MergeKey dynamically removes impossible letters and expands the remaining keys, giving you bigger tap targets and fewer typos. It's like autocomplete, but visual — you see your options shrink in real time. MERGE MODE — UNIQUE TO MERGEKEY - Keys that can't continue your word disappear instantly - Remaining keys grow to fill the space — bigger keys, fewer mistakes - Learns new words you teach it - Toggle Merge Mode off if you prefer just the disappearing keys without resizing MADE FOR IPAD - Full-size layouts on large iPads, a roomier compact layout on smaller ones - Pinch to split the keyboard for thumb typing, with adjustable split distance - Two-finger trackpad: drag across the keys to move the cursor - Letters Only mode for a clean, focused board - Split typing on iPhone too, in landscape 31 LANGUAGES English, German, French, Spanish, Italian, Portuguese, Dutch, Polish, Czech, Slovenian, Greek, Turkish, Bulgarian, Russian, Ukrainian, Indonesian, Vietnamese, Swedish, Finnish, Danish, Norwegian, Icelandic, Lithuanian, Romanian, Hungarian, Irish, Hebrew, Arabic, Urdu (Latin), Bangla and Hindi — each with native prediction and accented character variants. English (US/GB), Spanish (ES/MX) and Portuguese (BR/PT) with correct regional dictionaries. Hindi, Bangla and Urdu in Latin letters. SMART FEATURES - Quick Settings right in the keyboard — tap the MergeKey icon - Scrolling prediction bar with up to 9 word suggestions - Long-press for accented letters and symbols - Character preview bubble on key tap - Optional dedicated number row - Double-tap shift for caps lock - Backspace hold-to-accelerate (characters, then words) - Hold 123 for a fan of digits; hold the comma key for more signs CUSTOMIZABLE STYLE - 14 keyboard styles: Default, Liquid Glass (iOS 26), Classic, Ink on Paper, Typewriter, Keycaps, Sharp, Brick, Pixel, Glossy, Metal, Backlit, Calculator, Neon - Custom key fill, border, character and accent colors - Letters that grow with their keys as they merge (optional) - 6 key fonts - Keyboard height: Compact, Normal or Tall - Transparency slider for key fill opacity - Animation speed control - Live keyboard preview in Settings and Style - Own colors for single function keys, a Black and White accent and Reset Style BUILT FOR LEARNERS - Swipe up to teach MergeKey a new word - Swipe down for continuous mode (all keys visible) - Swipe left to delete whole words - Swipe right to paste the last thing you copied - Key heatmap per language shows which letters you type most and where your thumb lands - Built-in typing game to practice in any language - Live lessons in How to – every gesture plays on your own keyboard - 3 mini games: Tennis, Surfing, Penalty Kick PRIVACY FIRST MergeKey does not collect or transmit your typing data. Everything stays on your device. MergeKey never connects to the internet. The only network activity is the App Store handling the optional tips – that's why iOS shows a Mobile Data switch for MergeKey. The optional clipboard keeps your texts on this device only. Word lists based on the Leipzig Corpora Collection (CC BY 4.0). AI4Bharat Aksharantar (CC BY).
Wurstfinger
This keyboard app features large, well-spaced keys and intuitive swipe gestures designed for easier typing. It prioritizes user privacy with local processing and no data collection, offering a unique alternative to standard QWERTY layouts.
- Large 3x3 key grid
- Swipe gestures for additional characters
- Supports 14 languages
- Compose accents through combinations
- Circular gestures for uppercase
- Cursor control via space bar
- Adjustable keyboard size
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Wurstfinger - The Keyboard for Fat Fingers Tired of typos? Wurstfinger is a privacy-conscious keyboard with large keys and swipe gestures. Based on the proven MessagEase layout, it replaces the cramped QWERTY grid with a 3x3 layout optimized for thumb typing. Unlike mainstream keyboards, Wurstfinger doesn't rely on invasive word prediction - instead, it achieves accuracy through ergonomic design. Large, well-spaced keys mean fewer missed taps, and the gesture system lets you access all characters without hunting for tiny buttons. FEATURES: • Large 3x3 Key Grid - Optimized for thumbs, not precision pointers • Swipe Gestures - Access 8 additional characters per key by swiping • 26 Keyboard Layouts - Arabic, Croatian, English, Estonian-Finnish, Finnish, French, German, Greek, Hebrew, Hindi, Italian, Japanese (Hiragana), Japanese (Katakana), Korean, Persian, Polish, Portuguese, Russian, Spanish, Spanish-Catalan, Swedish, Tagalog, Thai, Ukrainian, Urdu, and Vietnamese (with Telex input) • Compose Rules - Create accents through combinations (e.g. ' + a = á) • Circular Gestures - Draw a circle for uppercase letters • Cursor Control - Drag on the space bar to move the cursor, drag on the delete key to erase continuously • Haptic Feedback - Customizable vibration intensity • Fully Adjustable - Scale keyboard size to your preference PRIVACY FIRST: • No data collection • No network access • No word prediction tracking • All processing happens locally on your device Wurstfinger requires training - expect a few days to build muscle memory. But once you've crossed that threshold, you'll never want to go back to a standard keyboard. The gestures become second nature, and you'll type faster and with fewer errors than ever before. Your fingers will thank you!
Screenshots
Verdict
The clearest difference is update cadence: MergeKey at every 4 days against Wurstfinger's every 3 weeks. Wurstfinger's advantage is ratings volume (9 vs 3). On price, rating, review sentiment and ads 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.
On the App Store both sit at effectively the same score — 5.0 for MergeKey against 4.9 for Wurstfinger. Both are backed by a comparable volume of ratings — 3 and 9 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
MergeKey ships an update every 4 days, Wurstfinger every 3 weeks. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.
| Parameter | MergeKey | Wurstfinger |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | 4.9 (9 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 3 | 9 — better |
| Update frequency | Every 4 days — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 39 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Andrei Achziger | Akator GmbH |
Customer experience
MergeKey
Wurstfinger
In-app purchases
MergeKey
No in-app purchases
Wurstfinger
No in-app purchases








