Comparison

WriteVoice vs KernelAI

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

Head to head
About

WriteVoice

Transform your voice into written content across 130+ languages with AI-powered rewriting. Dictate faster than typing and generate professional emails, social media posts, scripts, and more. Save hours monthly with this productivity tool.

Highlights
  • Dictate 4x faster than typing
  • 30+ AI transformation modes
  • Supports 130+ languages
  • Keyboard extension for 100+ apps
  • Full-screen dictation mode
  • Built-in time tracking
  • Privacy-first design
Read full description

Speak it into existence, in any format, any language. WriteVoice is the AI content creation engine that turns your voice into perfectly crafted tweets, professional emails, YouTube scripts, meeting notes, or any written format you need. With 30+ intelligent rewrite modes and support for 130+ languages, your voice becomes your most powerful productivity tool. DICTATE 4X FASTER THAN TYPING Stop fighting with your keyboard. Speak naturally, and watch AI transform your words into publication-ready content, instantly, everywhere. Works as a keyboard extension in Slack, Messages, WhatsApp, Email, Notion, LinkedIn, and 100+ apps. WHY PROFESSIONALS CHOOSE WRITEVOICE FULL-SCREEN DICTATION MODE Capture long-form content without distraction. Swipe right to return to any app with perfectly formatted text - no copying, no pasting, no friction. TIME TRACKING BUILT-IN See exactly how many hours WriteVoice saves you. Average user: 6-10 hours monthly. That's an entire workday back. PRIVACY-FIRST DESIGN Secure keyboard extension. Your thoughts stay yours. PERFECT FOR - Content creators producing multi-platform posts - Social media managers scaling output 10x - Multilingual professionals working across languages - Busy executives drafting emails on the go - YouTubers and TikTokers scripting while brainstorming - Students taking notes in any language - Anyone with typing fatigue or accessibility needs - Remote teams collaborating globally 30+ AI TRANSFORMATION MODES Unlike basic dictation, WriteVoice adapts to ANY writing need: GENERAL MODES 1. Auto-Enhance: AI picks perfect improvements 2. Quick Polish: Clean up filler words instantly 3. Deep Rewrite: Complete clarity overhaul 4. Restructure: Add headings and bullets 5. Make Concise: Cut 50% while keeping meaning 6. Create List: Convert thoughts to action items SOCIAL MEDIA CONTENT 1. Tweet: Single viral-worthy post 2. Twitter Thread: Multi-part storytelling 3. Instagram: Captions with smart hashtags 4. LinkedIn: Professional thought leadership 5. YouTube Script: Full video structure 6. TikTok Script: Short-form hooks 7. Newsletter: Email-ready content PROFESSIONAL FORMATS 1. Email: Business-appropriate tone 2. Meeting Notes: Organized with action items 3. PRD: Product requirements docs 4. Proposal: Persuasive business format 5. Pitch Deck: Presentation outline 6. Report: Executive summary style WRITING STYLES - Business Tone - Formal - Casual - Friendly - Direct and Clear - Daily Journal 130+ LANGUAGES SUPPORTED Dictate in your native language. Transform into another. Break every language barrier. All European languages, Asian languages including Chinese, Japanese, Korean, Hindi, Thai, Vietnamese, Indonesian, Tagalog. Middle Eastern languages including Arabic, Hebrew, Persian, Turkish, Urdu. African languages including Swahili, Hausa, Yoruba, Zulu, Amharic. Indigenous languages including Hawaiian, Maori, Basque, Welsh. And 40+ more including Esperanto, Latin, Sanskrit. Code-switch mid-sentence. Write globally. Speak locally. WORKS EVERYWHERE YOU WRITE Slack, Messages, WhatsApp, Email, Notion, Google Docs, LinkedIn, Twitter, Instagram, Facebook, TikTok, Microsoft Teams, Discord, Telegram, WeChat, Evernote, Bear, Obsidian, Craft, Ulysses, and 100+ more apps. BUILT BY AN INDIE DEVELOPER WHO LISTENS Fast support. No corporate slowness. German precision. Global perspective. FREE TO START Experience full power with our trial. Upgrade for unlimited everything. - Unlimited dictation - All 30+ AI modes - All 130+ languages - Time-tracking analytics - Priority support - New modes added monthly STOP TYPING. START SPEAKING. Your voice is powerful. WriteVoice makes it unstoppable. By using WriteVoice, you agree to: Terms of Service: https://www.writevoice.io/terms-of-service Privacy Policy: https://www.writevoice.io/privacy-policy Licensed Application End User License Agreement (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

KernelAI

This AI assistant operates entirely on your device, offering private, offline access to over 43 free models. It functions without an internet connection, ensuring your data remains secure and inaccessible to anyone but you. Enjoy AI capabilities anywhere, anytime, with no data collection or subscriptions.

Highlights
  • Private, offline AI operation
  • No internet required
  • Zero data collection
  • Access to 43+ free AI models
  • Vision AI for image analysis
  • File attachments for document understanding
  • Ad-free experience
Features
Read full description

ON-DEVICE AI Downloaded compatible models run locally on your device. KernelAI checks model compatibility and memory needs before you download, so you can choose a model that fits your iPhone or iPad. CHAT WITH DOCUMENTS Ask questions about PDFs, DOCX, CSV, Markdown, and text files. Summarize, search, and find useful passages with on-device document chat. UNDERSTAND IMAGES Attach a photo, screenshot, chart, or diagram and ask what it shows with a compatible vision model. Image analysis runs on-device. 50+ MODEL OPTIONS Choose from 50+ models, including Llama, Gemma, Qwen, DeepSeek, Mistral, Phi, and more. Import compatible GGUF models from Files, URLs, or your local network. WRITE, LEARN, AND CODE Use local models for writing, brainstorming, explanations, and code. Generate, explain, and review code with models selected for programming. CUSTOMIZE YOUR AI Set a system prompt and generation parameters for each model. See tokens-per-second, context usage, and generated thinking output from supported reasoning models. VOICE, SIRI, AND SHORTCUTS Dictate prompts with voice input. Ask KernelAI from Siri or build it into Shortcuts on supported iOS versions. On supported iOS 26 devices, Apple's built-in on-device model can answer in the background; downloaded models may open KernelAI while they run. ORGANIZE YOUR WORK Keep conversations in folders, search your history, branch a chat, edit or regenerate messages, and export your work. Use KernelAI on iPhone and iPad, including from the Share Sheet and Home Screen widget. OPTIONAL WEB SEARCH Turn on web search when you need current information. Add your own Tavily or Exa API key; web search is off by default. Provider fees may apply. TEN APP LANGUAGES Use KernelAI in English, French, German, Spanish, Russian, Brazilian Portuguese, Japanese, Korean, Traditional Chinese or Arabic. Choose your language during onboarding or change it in Settings. Arabic includes a right-to-left interface. FREE TO USE KernelAI remains free. Local AI works offline after downloading a compatible model. No subscription is required for this version. Privacy Policy: https://kernelai.app/privacy Terms & Conditions: https://kernelai.app/terms

Screenshots

WriteVoice4 screens
KernelAI4 screens

Verdict

The call

The clearest difference is monetization model: KernelAI at free against WriteVoice's free with in-app purchases. KernelAI also leads on iOS requirement (16.4 vs 18.0). On price, rating, review sentiment and ratings volume 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. WriteVoice sells 4 in-app purchases, starting at $14.99 per month and KernelAI sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.4 for WriteVoice against 4.6 for KernelAI. Both are backed by a comparable volume of ratings — 23 and 42 respectively. Written reviews are what separate them: 82% of WriteVoice's written reviews are positive against 80% of KernelAI's.

UpkeepUpdate frequency

WriteVoice ships an update every 2 weeks, KernelAI every 3 weeks. The most recent releases landed on October 21, 2026 and October 26, 2026 respectively.

Scorecard2 real differences · 8 level
WriteVoice versus KernelAI: the parameters behind the verdict, then further details
ParameterWriteVoiceKernelAI
PriceFreeFree
Rating4.4 (23 ratings)4.6 (42 ratings) — better
Positive reviews81.8% of reviews — better80.0% of reviews
Number of ratings2342 — better
Update frequencyEvery 2 weeks — betterEvery 3 weeks
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.016.4 — better
Further details — not scored
Size84 MB86 MB
Age rating4+17+
DeveloperYassine RajallahAnes Khadiri

Customer experience

WriteVoice

All ratings23 ratings
Positive87.0%
Neutral0.0%
Negative13.0%
Written reviews11 reviews
Positive81.8%
Neutral0.0%
Negative18.2%

KernelAI

All ratings42 ratings
Positive90.5%
Neutral2.4%
Negative7.1%
Written reviews5 reviews
Positive80.0%
Neutral0.0%
Negative20.0%

In-app purchases

4 purchases

WriteVoice

Subscriptions4
  • Unlimited Monthly7 Days trial$14.991 Month
  • WriteVoice 3 Months Offer$29.993 Months
  • Unlimited AI-powered voice7 Days trial$59.991 Year
Show 1 more
  • Unlimited AI-powered voice7 Days trial$149.991 Year
3 purchases

KernelAI

One-time3
  • Small Tip$1.99
  • Kind Tip.$3.99
  • Generous Tip.$6.99

Questions

Is WriteVoice free?
WriteVoice is free to download, with in-app purchases available.
Is KernelAI free?
KernelAI is free to download, with in-app purchases available.
Which has better reviews, WriteVoice or KernelAI?
KernelAI is rated higher. WriteVoice averages 4.4 out of 5 from 23 ratings, while KernelAI averages 4.6 from 42 ratings.
Do WriteVoice or KernelAI have ads?
Neither WriteVoice nor KernelAI shows ads.
Which is updated more often, WriteVoice or KernelAI?
WriteVoice ships an update every 2 weeks, and KernelAI every 3 weeks. Most recently, WriteVoice was updated on October 21, 2026 and KernelAI on October 26, 2026.

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