AI Humanizer vs Klartext
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AI Humanizer
Enhance your writing with an AI-powered keyboard that offers grammar checking, rephrasing, and tone adjustment within any app. Quickly proofread, rewrite, summarize, and translate text to improve clarity and efficiency in your messages and emails.
- AI-powered grammar and spell check
- Reword and paraphrase sentences
- Adjust message tone (Friendly/Professional)
- Summarize long texts
- Translate text into multiple languages
- Integrated into keyboard for all apps
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Paraphrase tool, AI email writer and grammar checker, built right into your keyboard. Reword any sentence, fix every typo and write emails in seconds. GrammarFix is an AI keyboard that works inside every app: Messages, WhatsApp, Mail, Gmail, Instagram, Slack, Notes and more. Type as usual, tap a tool, and your text is fixed in place. No copying and pasting. WRITING TOOLS ON YOUR KEYBOARD • Proofread: fix grammar, spelling, punctuation and typos in one tap • Rewrite: reword and paraphrase any sentence so it reads clearer • Change Tone: make a message Friendly or Professional • Concise & Expand: shorten long text or add helpful detail • Summary & Key Points: summarize long messages and emails • List & Table: turn messy notes into a clean list or table • Translate: type and translate into English, Spanish, Portuguese, German, French, Italian, Dutch, Polish, Swedish, Turkish, Russian, Korean and Indonesian • Describe your change: tell the AI how the text should sound and it rewrites it for you IN YOUR LANGUAGE The app and the keyboard come in 13 languages: English, Spanish, Portuguese, German, French, Italian, Dutch, Polish, Swedish, Turkish, Russian, Korean and Indonesian. Type on native layouts like AZERTY, QWERTZ, Korean and Russian, with regional versions for French, German, Spanish, Portuguese and Dutch. WRITE BETTER EMAILS AND MESSAGES Draft emails, replies, essays and posts faster. The AI writer keeps your meaning and your language, so it works for students, professionals and non-native English speakers alike. PRIVATE BY DESIGN Full Access is only used to power the writing tools. We never record or store your keystrokes. GRAMMARFIX PRO Unlock unlimited AI writing tools. Choose a weekly or yearly GrammarFix Pro plan. Payment is charged to your Apple ID at confirmation of purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://natural-card-aed.notion.site/GrammarFix-Privacy-Policy-27a42a91f1b5805d8ef9f5e3c88b0368
Klartext
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Speak instead of typing: tap the mic, talk — polished text lands in any app, in your language. Everything happens on your iPhone: recognition runs on Apple's large speech model right on the device, and AI cleanup removes filler words and slips and sets clean punctuation — powered by Apple Intelligence, right on your iPhone. No account, no server, no tracking: by default, your dictation goes nowhere. For mixed languages and technical vocabulary there's optional cloud recognition with your own key; for cleanup without Apple Intelligence, an online model through your own account with the provider — both clearly labeled, both optional. The Klartext keyboard is deliberately not a second typing keyboard — it's a lean dictation panel: a big mic, space, delete, return, and (with AI cleanup active) your mode right on the keyboard: Message · Email · Note · AI prompt · your own modes. DICTATION THAT DOESN'T CUT OFF Unlike built-in dictation, recording keeps running when you switch apps: the keyboard is just the display, the mic lives in the main app. Look something up, switch apps, come back, tap stop — the text is in your field. And no word gets lost: recordings stay on your device for up to 24 hours — listen again or re-transcribe. Can be turned off. WHY KLARTEXT • Everything on device: recognition and cleanup run locally — on a plane, in a dead zone, in the basement • Private by design: no account, no server, no tracking — by default, your dictation never leaves your iPhone • Recognition that learns: correct a word once and your spelling sticks — dictionary and replacements included • Custom modes: create up to three of your own, each with a line on format and tone — requests like "no emojis" or "all lowercase" work right on the device; pick them on the keyboard, and built-in modes can be renamed (with AI cleanup) • Great for AI prompts: dictate instructions for ChatGPT, Claude, or coding agents — technical terms stay exactly as you said them • Read-aloud as a bonus: Klartext reads copied text aloud, even with the screen locked — pick your voice, optionally OpenAI voices via your own key (clearly labeled) • Widgets and stats: words today and weekly overview • Built in Germany, perfected for German — and takes dictation in many languages • The app is now available in 16 languages FAIRLY PRICED Every week, 2,500 dictated words are free — permanently, no account needed. Only delivered dictations count; read-aloud, history and dictionary never do. If you dictate more, get Klartext Unlimited: one yearly subscription, one price, cancel anytime — no other tiers. The price is shown in the app and applies to your region. The subscription pays for development — there is no Klartext server. If you first downloaded Klartext before version 2.0, you keep everything unlimited, no subscription. WHAT YOUR IPHONE NEEDS Dictation works on any iPhone running iOS 26. On-device AI cleanup needs Apple Intelligence (iPhone 15 Pro and newer) — otherwise an online model through your own account can take over, if you like. Terms of Use (Apple standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy policy: https://klartext-app.com/privacy.html Imprint & support: https://klartext-app.com/imprint.html
Screenshots
Verdict
The clearest difference is in-app purchases: Klartext at none against AI Humanizer's 4. Klartext also leads on update cadence (every 4 days vs every 2 weeks). AI Humanizer's advantage is iOS requirement (16.0 vs 26.0). 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. AI Humanizer sells 4 in-app purchases, starting at $4.99 per 7 days. Klartext asks for nothing beyond the download.
AI Humanizer ships an update every 2 weeks, Klartext every 4 days. The most recent releases landed on October 31, 2026 and October 28, 2026 respectively.
| Parameter | AI Humanizer | Klartext |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 2 weeks | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Devices | iPhone | iPhone |
| Requires iOS | 16.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 54 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | Mudasir Hussain | simon heinz |
In-app purchases
AI Humanizer
- Pro Weekly$4.997 Days
- GrammarFix Pro Monthly$9.991 Month
- GrammarFix Pro Yearly$39.991 Year
- GrammarFix Pro Lifetime$59.99
Klartext
No in-app purchases









