Comparison

AI ToneFix vs Ki

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

Head to head
About

AI ToneFix

Features
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Say the same thing, land it better. ToneFix rewrites your texts, emails, and Slack messages in seconds, on your iPhone, without changing a single fact. Free to download. Nothing you write ever leaves your device. No account. No cloud. No subscription. WHAT IT DOES Paste a draft or use the keyboard and share sheet anywhere you type. Pick a tone, pick a channel, and ToneFix rewrites it while keeping your names, numbers, and dates intact. NINE TONES FOR REAL CONVERSATIONS • Less Rude — soften sharpness and passive aggression • More Confident — drop hedging words, sound decisive • Friendlier — add warmth without losing your point • Shorter — cut filler, keep every fact • Clearer — make the ask unmistakable • More Executive — crisp, composed, leadership-ready • More Human — remove robotic, AI-sounding phrasing • Remove Fluff — no jargon, just the message • Slept Last Night — calm down a rambling, heated draft NEW WAYS TO GET IT EXACTLY RIGHT • Streaming rewrites — watch each version appear in real time • Tone Intensity — Subtle, Balanced, or Strong for every tone • What Changed — a word-level diff shows exactly what moved • Refine — ask for "shorter still," "warmer," or "more direct" with one tap, and undo anytime • Fact-Preservation Check — a warning if a name, number, or date went missing • Reply Context — paste what you're replying to for a rewrite that actually fits LEARN MY VOICE (Pro) Give ToneFix three samples of how you actually write, and it builds a custom tone that sounds like you, not like a template. PRESETS AND CUSTOM TONES Stack your favorite tone, intensity, and channel into one tap. Build your own tones for the exact situations you deal with — the tough client, the group chat, the weekly update. WORKS WHERE YOU ALREADY TYPE • Keyboard — presets, whole-message rewrite, live streaming preview, swap back, and your recent rewrites, all without leaving the keyboard • Share Sheet — rewrite text from any app, or rewrite the text inside a screenshot with built-in image OCR • Shortcuts — a "Rewrite Text" action with tone and channel parameters, plus "Rewrite Clipboard," for your own automations YOUR HISTORY, ORGANIZED Every rewrite is saved automatically. Tag it, search it with Spotlight right from your home screen, reuse it, or export your history to CSV. TONEFIX PRO Free gets you everything above, with 2 of your own presets plus every built-in preset. ToneFix Pro is a one-time $4.99 purchase, no subscription, and unlocks: • Custom tones and Learn My Voice • Unlimited presets • iCloud sync across your devices PRIVACY AND REQUIREMENTS ToneFix runs on Apple's on-device Foundation Models — your text is processed on your iPhone and never sent to a server. AI-powered rewrites require Apple Intelligence (iPhone 15 Pro or later, and all iPhone 16 and iPhone 17 models). On other iOS 26 devices, ToneFix still works with a built-in rule-based rewriter that handles Shorter, Clearer, Remove Fluff, and More Confident, and cleans up the rest. Built for iOS 26 with an accessible, native design: full VoiceOver support, Dynamic Type, and Reduce Motion respected throughout. No account. No ads. No data collection. Just better messages, sent from wherever you already are.

About

Ki

Capture, organize, and connect all your learning in one place. This app allows you to save notes, links, code snippets, and ideas, then link them together to build a web of knowledge. Find anything fast with full-text search and visual knowledge graphs.

Highlights
  • Capture notes, links, quotes, code snippets, and ideas
  • Organize with color-coded tags and custom topics
  • Connect notes with bidirectional linking
  • Visualize knowledge with interactive graphs
  • Full-text search and saved searches
  • Quick capture via floating button and widgets
  • Review workflow for managing notes
Features
Read full description

Ki-note is your personal knowledge base. Capture, organize, and connect everything you learn — all in one place. CAPTURE EVERYTHING • Notes, links, quotes, code snippets, ideas, and references • Quick capture with a floating + button from anywhere in the app • Save source URLs and titles for web content. You can share links from Safari to Ki-note! • Tag code snippets with their programming language (Swift, Python, JavaScript, TypeScript, Go, Rust) • You can insert notes, text, links, into Ki-notes using the Share functionality • You can insert notes using voice in the Control Center widget or using a shortcut with Siri ORGANIZE YOUR WAY • Tags — color-coded labels to categorize your notes • Topics — group related notes under a single theme with custom icons • Smart Collections — automatic filters like Inbox, Favorites, Reading Queue, Unreviewed, Quotes, Ideas, Links, Untagged, and Unlinked • Configurable Quick Access dashboard on the home screen • Pin, favorite, and archive notes • Review workflow — track notes from Inbox → Unreviewed → Reviewing → Reviewed CONNECT YOUR KNOWLEDGE • Link notes together to build a web of ideas • Bidirectional linking — see which notes link to and from each note • Interactive Knowledge Graph — visualize all your notes and their connections • Customizable graph settings for colors, forces, and display options FIND ANYTHING FAST • Full-text search across all notes • Save frequently used searches for quick access • Browse by tags and topics • Filter by note type, status, or collection BUILT FOR YOU • 100% free — no ads, no subscriptions, all features unlocked • Local-first — your data stays on your device with SwiftData • Localized in 6 languages: English, Spanish, French, German, Italian, and Portuguese • Light and dark mode with customizable themes • Optional one-time tip to support development Ki-note is designed for students, researchers, developers, writers, and anyone who wants to build a personal knowledge base that grows with them.

Screenshots

AI ToneFix4 screens
Ki4 screens

Verdict

The call

The clearest difference is in-app purchases: AI ToneFix at none against Ki's 1. Ki's advantage is update cadence (every 2 days vs every 6 months) and iOS requirement (18.6 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Ki sells 1 one-off in-app purchase. AI ToneFix asks for nothing beyond the download.

UpkeepUpdate frequency

AI ToneFix ships an update every 6 months, Ki every 2 days. The most recent releases landed on October 8, 2026 and September 29, 2026 respectively.

Scorecard3 real differences · 7 level
AI ToneFix versus Ki: the parameters behind the verdict, then further details
ParameterAI ToneFixKi
PriceFreeFree
Rating—5.0 (2 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 6 monthsEvery 2 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free
DevicesiPhone, iPadiPhone, iPad
Requires iOS26.018.6 — better
Further details — not scored
Size12 MB4 MB
Age rating4+4+
DeveloperZossozJuan Casanueva

In-app purchases

None

AI ToneFix

No in-app purchases

1 purchases

Ki

One-time1
  • Buy me a coffee$0.99

Questions

Is AI ToneFix free?
AI ToneFix is free to download, with no in-app purchases.
Is Ki free?
Ki is free to download, with in-app purchases available.
Do AI ToneFix or Ki have ads?
Neither AI ToneFix nor Ki shows ads.
Which is updated more often, AI ToneFix or Ki?
AI ToneFix ships an update every 6 months, and Ki every 2 days. Most recently, AI ToneFix was updated on October 8, 2026 and Ki on September 29, 2026.

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