Comparison

Mentarapp vs Nook

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

Head to head
About

Mentarapp

Features
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Mentara is your personal second brain for capturing, connecting, and understanding your ideas. KEY FEATURES: - Private by Design Your notes are stored locally on your device. No accounts required, no cloud sync, no tracking. Your thoughts stay private. - AI-Powered Note Scanning Capture handwritten notes, documents, or whiteboards with your camera. AI extracts and formats the text instantly. - Deep Thinking AI Let AI analyze your notes in depth to uncover insights, connections, and new ideas you might have missed. - Connect Your Thoughts Link notes together with [[wiki-links]] to build a personal knowledge web that grows with you. - Smart Organization Use folders, #tags, and powerful search to keep everything organized and easy to find. - Swipe Actions Pin, archive, or delete notes with intuitive swipe gestures. - Beautiful Customization Choose from stunning gradient backgrounds for your notes and switch between light and dark themes. - Optional PIN Protection Add an extra layer of security with a customizable PIN lock. - Export Your Data Export all your notes to PDF or CSV anytime. Your data, your control. - Available in 3 Languages Full support for English, Spanish, and French. Note: AI features (Note Scanning and Deep Thinking) require an internet connection and an OpenAI API key, configurable in Settings. All core note-taking features work fully offline. Mentara is perfect for journaling, brainstorming, studying, or building your personal knowledge base.

About

Nook

Features
Read full description

Nook is an RSS reader for people who would rather choose what they read. Add a feed, or paste a website and let Nook find the feed for you. Your subscriptions, what you have read, and what you have starred live on your device. There is no account to create, and nothing about your reading is sent anywhere. A READER THAT GETS OUT OF THE WAY Articles render natively, with real typography rather than a web page squeezed into a phone. Headings, quotes, code, tables, nested lists, images, and video all keep their structure. Set the font, size, line height, letter spacing, and colours, and switch any single feed to a full-page reader or the original site when its own layout is worth keeping. WORKS WITHOUT A NETWORK Nook is offline-first, not offline-capable. It launches, lists, and reads with no connection. Choose the articles to keep for later and decide when they expire. SYNC WITHOUT AN ACCOUNT Point Nook at a folder in iCloud Drive, Dropbox, or anywhere else that syncs files, and your feeds, read state, stars, categories, and folders follow you between devices. The folder service moves the files; Nook merges them, per device, so two devices changed at once do not overwrite each other. No server of ours is involved, because there isn't one. TRANSLATION, ON YOUR TERMS Translate a full article or just the titles in a list. Apple Intelligence runs on the device and costs nothing. Gemini is opt-in and uses an API key you provide, kept in this device's Keychain and never placed in the sync folder. ORGANISE IT HOWEVER YOU THINK Folders for feeds, colour-coded categories for articles, keyword rules, and text filters that collect what you would rather not see instead of deleting it. Optionally let Apple Intelligence or Gemini sort new articles by subject. QUIET BY DEFAULT No advertising, no tracking, no analytics, and no engagement mechanics. Badges and new-article notifications start off, and Nook asks for permission only after you turn one on โ€” never at launch. PUBLISHING (BETA, INVITATION ONLY) Nook can also publish what you write. Articles are stored as records in an AT Protocol repository that belongs to you, and served as a web page with a real feed others can subscribe to. You can export every record and delete it at any time, including while publishing is suspended. This part of Nook is in beta and needs an invitation; everything above works without one.

Screenshots

Mentarapp4 screens
Nook4 screens

Verdict

The call

The clearest difference is update cadence: Nook at every 3 days against Mentarapp's every 2 months. Mentarapp's advantage is iOS requirement (15.1 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

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

UpkeepUpdate frequency

Mentarapp ships an update every 2 months, Nook every 3 days. The most recent releases landed on September 30, 2026 and October 10, 2026 respectively.

Scorecard2 real differences ยท 4 level
Mentarapp versus Nook: the parameters behind the verdict, then further details
ParameterMentarappNook
PriceFreeFree
Update frequencyEvery 2 monthsEvery 3 days โ€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.1 โ€” better18.0
Further details โ€” not scored
Size34 MB16 MB
Age rating4+17+
DeveloperAdrian Serrano MotaKANG SEUNGHYUN

In-app purchases

None

Mentarapp

No in-app purchases

None

Nook

No in-app purchases

Questions

Is Mentarapp free?
Mentarapp is free to download, with no in-app purchases.
Is Nook free?
Nook is free to download, with no in-app purchases.
Do Mentarapp or Nook have ads?
Neither Mentarapp nor Nook shows ads.
Which is updated more often, Mentarapp or Nook?
Mentarapp ships an update every 2 months, and Nook every 3 days. Most recently, Mentarapp was updated on September 30, 2026 and Nook on October 10, 2026.

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