Kioku vs VAYS
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Kioku
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Kioku is a personal knowledge library for Mac. Save articles, PDFs, websites, and your own Markdown notes into organized vaults you can read, search, annotate, and keep with you offline. Use Kioku to turn scattered research into a calm, durable library. Paste a URL to archive a single page, save a PDF from your Mac, or crawl more of a site when you want a deeper reference vault. Kioku stores your content as Markdown with downloaded assets, so your library stays portable and readable outside the app. Write your own notes with a focused Markdown editor, add images, create internal links, and keep authored notes separate from saved web pages. While reading, select passages to save excerpts and notes so important ideas do not disappear after the first pass. Kioku also includes optional local AI features for summaries, retrieval, chat, and study cards. Supported models run on your Mac, keeping those experiences local to your device. Features: Save articles, PDFs, pages, and websites into Markdown vaults Read saved content offline in a native Mac interface Write and edit Markdown notes Organize saved pages into vaults Search your library Annotate passages and save excerpts Generate summaries with optional on-device AI Create study cards from saved pages and notes Store content in a local or iCloud Drive-backed folder Keep your library portable with Markdown files and assets Kioku is for readers, researchers, students, builders, and anyone who wants a quieter place to collect what matters.
VAYS
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Vays is a FOREVER FREE voice notes app built around your voice and your privacy. Record a thought, a meeting, a task, or a conversation with multiple people. Vays transcribes directly on your device, using models tuned for Polish and English. Your audio is not sent to the cloud. Built for people who think out loud: β’ Construction and site managers capturing decisions in the field β’ Medical and clinical professionals, where accurate Polish transcription matters β’ Product managers turning meetings into tasks β’ Anyone whose best ideas come while walking, driving, or moving between meetings Whatβs inside β’ On-device transcription: your audio stays on your phone unless you decide otherwise β’ Sessions (BETA): multi-speaker recordings with speaker recognition. Your own voice is recognized from a one-time voice profile, and other speakers can be named with a single tap β’ Vays Dictation Keyboard: dictate in any app with on-device transcription β’ Local Gemma AI: chat with your notes offline, without an account β’ Polished transcripts: turn messy spoken language into clean, readable text β’ Voice tasks: dictate a task and Vays turns it into a title, notes, and category β’ Improve transcript: re-transcribe a memo using a larger Whisper model β’ Device sync: notes from your iPhone can appear on your Mac β’ No ads, no tracking, no account Privacy by default Vays is designed so your recordings stay yours. Recording, transcription, speaker separation, transcript polishing, and AI chat all run locally on your iPhone. There is no external AI service in the iOS data path. AI runs locally using Apple Neural Engine and the Gemma model. The only network features are optional iCloud sync, without audio recordings, and optional pairing with your own Mac running Vays on your local network. Optional companion: Vays for Mac Vays for Mac is a paid desktop companion for people who want richer analysis, support for long recordings, and system-wide dictation mode. Notes recorded on your iPhone can automatically appear on your Mac. Vays is built by one developer. Every piece of feedback is read, and every bug report is taken seriously.
Screenshots
Verdict
The clearest difference is in-app purchases: Kioku at none against VAYS's 3. Kioku also leads on update cadence (every 2 days vs weekly). VAYS's advantage is device support (3 vs 1) and iOS requirement (17.0 vs 26.0). On price and ads there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. VAYS sells 3 one-off in-app purchases. Kioku asks for nothing beyond the download.
Kioku ships an update every 2 days, VAYS weekly. Both last shipped on October 31, 2026.
| Parameter | Kioku | VAYS |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 days β better | Weekly |
| Ads | No | No |
| In-app purchases | No β better | Yes |
| Devices | iPhone | iPhone, iPad, Apple Watch β better |
| Requires iOS | 26.0 | 17.0 β better |
| Further details β not scored | ||
| Size | 51 MB | 39 MB |
| Age rating | 4+ | 4+ |
| Developer | Kai Kang | ARVIND JUNEJA OUMM |
In-app purchases
Kioku
No in-app purchases
VAYS
- Hi five$1.99
- Buy me a coffee$3.99
- Patron$9.99








