Comparison

Notesnook vs Keep AI

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

Head to head
About

Notesnook

This open-source app offers secure, encrypted note-taking and organization across all your devices. It features a robust editor, to-do lists, and a private journal with advanced security to protect your personal information.

Highlights
  • Military-grade encryption
  • Cross-platform synchronization
  • To-do lists and task management
  • Private journal with media support
  • Rich text and Markdown editor
  • Notebook organization
  • App lock with fingerprint support
Features
Read full description

Your notes are yours. Notesnook encrypts every one of them on your device before it ever reaches the cloud — so no one can read them. Not advertisers, not us. UNLIMITED NOTES. EVERY DEVICE. FREE. Most note apps cap the free plan until it hurts. Others stop after a few dozen notes. Notesnook never limits how much you write or how many devices you sync. A REAL EDITOR Headings, tables, code blocks, maths, outlines, Markdown and full-quality images. Notes that hold up whether you are writing a shopping list or a thesis chapter. ORGANISED AT ANY SIZE Nested notebooks, tags, colours, pinned and favourite notes, and search that stays instant at 10,000 notes. Link notes to each other and build your own private wiki. PRIVACY YOU CAN CHECK YOURSELF • End-to-end encryption is always on — you cannot switch it off, so you cannot forget • Encrypted on your device, in transit and at rest, using XChaCha20-Poly1305 and Argon2 • Even your notebook and tag names are encrypted • 100% open source under AGPLv3 — read every line, or run your own sync server • Recommended by Privacy Guides IMPORT YOUR OLD NOTES Bring your notes, notebooks and tags with you. Import from your previous notes app, plus plain Markdown and HTML files. EVERYWHERE YOU WRITE iPhone, iPad, Mac and the web. Sync is instant, and encrypted the whole way. ALSO INSIDE • Web clipper — save any article, ad-free and offline • Reminders across all your devices • Note version history, so nothing is ever really lost • Publish a note to a shareable link • Dark mode and custom themes FREE FOREVER Unlimited notes, unlimited devices, 50 notebooks, 50 tags and full end-to-end encryption. No ads. No trial countdown. PAID PLANS Add task lists, callouts, recurring reminders, more storage, and — on Pro — app lock, an encrypted vault and full-quality images. From $19.99 a year. Questions or feedback: support@streetwriters.co Privacy policy: https://notesnook.com/privacy Terms: https://notesnook.com/terms

About

Keep AI

This app helps you organize your personal and professional relationships by remembering important details and follow-ups. It uses voice notes and AI to automatically extract key information and schedule reminders, ensuring you never lose touch with important contacts.

Highlights
  • Voice-first notes
  • AI-powered follow-ups
  • Sorted by last contact
  • Smart reminders
  • Data export (Markdown/CSV)
  • No account required
Features
Read full description

A lightweight, AI-powered personal CRM — for people who follow up, not file paperwork. Speak or type a quick note after any meeting, call, or intro — a client, a prospect, a contact you just met. AI transcribes it, extracts the people, dates, and follow-ups, and files everything into one timeline per relationship. No forms. No CRM busywork. For your work: + A CRM without the Salesforce tax — built for sales reps, freelancers, consultants, and founders. + Speak a note after every meeting. AI surfaces the next action and sets the reminder. + Sort prospects by who's gone cold. Reach out before they ghost. And for the rest of your life: + Remember the kid's name, the trip they're nervous about, the book they loved. + Birthday and anniversary reminders a week before, not the day of. + Show up like the friend they remember. What AI does for you: + Transcribes — dictate as long as you want, AI handles the audio. + Extracts — names, dates, follow-ups, preferences, family, gift ideas. + Understands natural language — "next Friday," "before the launch," "in two weeks." + Summarizes — every relationship on one scannable page. + Surfaces the next action — what to say, when to reach out, what they care about. The rest of the app: + Smart reminders — a week before, not the day of. + Export your data anytime — full Markdown history or CSV contacts. Your relationships stay yours. All data lives on your iPhone. Keep uses AI to summarize and structure your notes, never to store them. No accounts required, no cloud sync of personal data, no selling your contacts. Built for iPhone. iOS 18+. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Notesnook4 screens
Keep AI4 screens

Verdict

The call

The clearest difference is ratings volume: Notesnook at 692 against Keep AI's 5. Notesnook also leads on device support (3 vs 1) and iOS requirement (15.6 vs 26.0). Keep AI's advantage is review sentiment (100% vs 79%). On price, rating, update cadence and ads 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. Notesnook sells 8 in-app purchases, starting at $1.99 per month and Keep AI sells 2 in-app purchases, starting at $7.99 per month. 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 — 4.7 for Notesnook against 4.8 for Keep AI. That said, the two scores are not equally well evidenced: Notesnook has 692 ratings behind it against 5, so its average is the more settled of the two. Written reviews are what separate them: 79% of Notesnook's written reviews are positive against 100% of Keep AI's.

UpkeepUpdate frequency

Notesnook ships an update every 8 days, Keep AI weekly. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

Scorecard4 real differences · 6 level
Notesnook versus Keep AI: the parameters behind the verdict, then further details
ParameterNotesnookKeep AI
PriceFreeFree
Rating4.7 (692 ratings)4.8 (5 ratings) — better
Positive reviews78.9% of reviews100.0% of reviews — better
Number of ratings692 — better5
Update frequencyEvery 8 daysWeekly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.6 — better26.0
Further details — not scored
Size82 MB19 MB
Age rating4+4+
DeveloperStreetwriters LLCBjörn Schefzyk

Customer experience

Notesnook

All ratings681 ratings
Positive93.0%
Neutral2.3%
Negative4.7%
Written reviews402 reviews
Positive78.9%
Neutral6.5%
Negative14.7%

Keep AI

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Notesnook

Reported bugs

3 issues
  • Crashes on launch on older iOS devices
  • Sync issues leading to data loss
  • Unreliable login and verification process

Requested features

5 requests
  • Improved search functionality
  • Reminders and calendar integration
  • Handwriting and drawing support
  • Multilingual support
  • Improved table and spreadsheet features

Keep AI

Not enough reviews yet to summarise bugs or requests.

In-app purchases

8 purchases

Notesnook

Subscriptions8
  • Notesnook Essential Plan7 Days trial$1.991 Month
  • Notesnook Pro2 variants$4.491 Month
  • Notesnook Pro Plan7 Days trial$6.991 Month
Show 5 more
  • Notesnook Believer Plan7 Days trial$8.991 Month
  • Notesnook Essential Plan14 Days trial$19.991 Year
  • Notesnook Pro2 variants$49.991 Year
  • Notesnook Pro Plan14 Days trial$69.991 Year
  • Notesnook Believer Plan14 Days trial$89.991 Year
2 purchases

Keep AI

Subscriptions2
  • Monthly$7.991 Month
  • Annual$49.991 Year

Questions

Is Notesnook free?
Notesnook is free to download, with in-app purchases available.
Is Keep AI free?
Keep AI is free to download, with in-app purchases available.
Which has better reviews, Notesnook or Keep AI?
Keep AI is rated higher. Notesnook averages 4.7 out of 5 from 692 ratings, while Keep AI averages 4.8 from 5 ratings.
Do Notesnook or Keep AI have ads?
Neither Notesnook nor Keep AI shows ads.
Which is updated more often, Notesnook or Keep AI?
Notesnook ships an update every 8 days, and Keep AI weekly. Most recently, Notesnook was updated on November 3, 2026 and Keep AI on October 30, 2026.

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