Comparison

MergeKey vs Wurstfinger

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Dynamic key resizing
  • Hides impossible keys
  • Supports 20 languages
  • Customizable styles
  • Privacy-focused
  • Typing game
Read full description

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 20 LANGUAGES English, German, French, Spanish, Italian, Portuguese, Dutch, Polish, Greek, Turkish, Russian, Ukrainian, Indonesian, Vietnamese, Swedish, Finnish, Danish, Norwegian, Romanian and Hungarian — each with native prediction and accented character variants. English (US/GB) and Portuguese (BR/PT) with correct regional dictionaries. SMART FEATURES - Prediction bar with 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) CUSTOMIZABLE STYLE - 4 keyboard styles: iOS 26 Liquid Glass, Classic, Flat, Flat Glass - Custom key fill and border colors - Transparency slider for key fill opacity - Spacebar icon options - Animation speed control 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 repeat the last word - Built-in typing game to practice in any language 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.

About

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.

Highlights
  • 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
Features
Read full description

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

MergeKey4 screens
Wurstfinger4 screens

Verdict

The call

The clearest difference is rating: MergeKey at 5.0 against Wurstfinger's 4.8. Wurstfinger's advantage is ratings volume (5 vs 1). On price, review sentiment, update cadence 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

MergeKey holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Wurstfinger has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

MergeKey ships an update every 2 weeks, Wurstfinger every 3 weeks. The most recent releases landed on September 17, 2026 and September 18, 2026 respectively.

Scorecard2 real differences · 8 level
MergeKey versus Wurstfinger: the parameters behind the verdict, then further details
ParameterMergeKeyWurstfinger
PriceFreeFree
Rating5.0 (1 ratings) — better4.8 (5 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings15 — better
Update frequencyEvery 2 weeks — betterEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhoneiPhone
Requires iOS18.017.0 — better
Further details — not scored
Size43 MB7 MB
Age rating4+4+
DeveloperAndrei AchzigerAkator GmbH

Customer experience

MergeKey

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Wurstfinger

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

MergeKey

No in-app purchases

None

Wurstfinger

No in-app purchases

Questions

Is MergeKey free?
MergeKey is free to download, with no in-app purchases.
Is Wurstfinger free?
Wurstfinger is free to download, with no in-app purchases.
Which has better reviews, MergeKey or Wurstfinger?
MergeKey is rated higher. MergeKey averages 5.0 out of 5 from 1 ratings, while Wurstfinger averages 4.8 from 5 ratings.
Do MergeKey or Wurstfinger have ads?
Neither MergeKey nor Wurstfinger shows ads.
Which is updated more often, MergeKey or Wurstfinger?
MergeKey ships an update every 2 weeks, and Wurstfinger every 3 weeks. Most recently, MergeKey was updated on September 17, 2026 and Wurstfinger on September 18, 2026.

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