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Ninuli
Turn notes into smart flashcards with 100% offline AI
Ninuli uses on-device AI to instantly turn your notes into flashcards without the cloud. Start for free with SM-2, or upgrade to Pro for the FSRS 4.5 algorithm, zero-knowledge encrypted backups, and unlimited study capacity.
I’m Sulthan, and I built Ninuli as my submission for the RevenueCat Ship-a-ton.
If you're like me, your notes pile up and are rarely revisited. Without active review, we forget 80% of what we learn within a week. While AI flashcard apps exist, they force you to upload your personal notes to their servers.
I wanted a smarter way to study that didn't compromise my privacy. So, I built Ninuli: a completely offline, privacy-first spaced repetition app.
🧠 The Core Engine (Free Forever) My philosophy for Ninuli is simple: never paywall learning. The Free tier is fully functional and includes:
Zero Artificial Limits: Create unlimited decks, add unlimited flashcards, and complete unlimited daily reviews.
100% Offline AI Generation: Paste any text, and an on-device AI model drafts flashcards locally. Nothing is sent to a server. (Free includes 2 AI generations per day).
Complete Import & Export Freedom: Seamlessly migrate your learning without platform lock-in. Full import and export support for:
Anki Deck Package (.apkg)
Notes in Plain Text (.txt)
Cards in Plain Text (.txt)
⚡ Supercharging with Ninuli Pro For power users and serious students, I integrated RevenueCat to build a robust Pro Tier (just $3.99/month). Upgrading unlocks premium superpowers:
The FSRS 4.5 Algorithm: Switch to the cutting-edge Free Spaced Repetition Scheduler for highly optimized memory retention and fewer daily reviews.
Pro Analytics & Retention Curves: Visualize your learning with weekly review bar charts, memory stability stats, and FSRS 4.5 vs SM-2 memory retention projections R(t) = 0.9^{t/S}.
Zero-Knowledge Cloud Backup: Securely back up your database to your personal Google Drive. Data is AES-256 encrypted locally using a custom Vault Password before it leaves your phone.
Expanded AI Superpowers: Unlock 10+ offline AI generations every day with advanced controls over your card generation.
🎂 Birthday Special: 28 Days of Ninuli Pro
I turn 28 on September 10th! To celebrate shipping Ninuli and hitting another milestone year, I’m giving the Product Hunt community an extended 28-day free trial of Ninuli Pro.
How to claim it:
Tap Pro in the app.
At the Google Play payment sheet, tap your payment method and select Redeem code.
Enter code NNLBDAY28 at checkout. (Valid until September 16!)
I’d love for you to download it on Android, paste in some notes, and let the offline AI do the heavy lifting.
I'd appreciate feedback on:
The quality and speed of the on-device AI card generation on your phone.
How seamlessly the .apkg and .txt imports/exports fit into your existing note-taking and study workflow.
How you feel about the transition from SM-2 to FSRS 4.5 if you try the Pro tier.
Thank you for checking out Ninuli and celebrating my 28th with me! 🚀
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About Ninuli on Product Hunt
“Turn notes into smart flashcards with 100% offline AI”
Ninuli was submitted on Product Hunt and earned 2 upvotes and 1 comments, placing #159 on the daily leaderboard. Ninuli uses on-device AI to instantly turn your notes into flashcards without the cloud. Start for free with SM-2, or upgrade to Pro for the FSRS 4.5 algorithm, zero-knowledge encrypted backups, and unlimited study capacity.
Ninuli was featured in Android (57.6k followers), Productivity (661.2k followers), Education (79.2k followers) and Artificial Intelligence (479.1k followers) on Product Hunt. Together, these topics include over 366.4k products, making this a competitive space to launch in.
Who hunted Ninuli?
Ninuli was hunted by Sulthan Mohaideen N K. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how Ninuli stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
Sulthan Mohaideen N K
Hey Product Hunt! 👋
I’m Sulthan, and I built Ninuli as my submission for the RevenueCat Ship-a-ton.
If you're like me, your notes pile up and are rarely revisited. Without active review, we forget 80% of what we learn within a week. While AI flashcard apps exist, they force you to upload your personal notes to their servers.
I wanted a smarter way to study that didn't compromise my privacy. So, I built Ninuli: a completely offline, privacy-first spaced repetition app.
🧠 The Core Engine (Free Forever)
My philosophy for Ninuli is simple: never paywall learning. The Free tier is fully functional and includes:
Zero Artificial Limits: Create unlimited decks, add unlimited flashcards, and complete unlimited daily reviews.
100% Offline AI Generation: Paste any text, and an on-device AI model drafts flashcards locally. Nothing is sent to a server. (Free includes 2 AI generations per day).
SM-2 Spaced Repetition: The proven SuperMemo-2 algorithm calculates optimal review intervals.
Complete Import & Export Freedom: Seamlessly migrate your learning without platform lock-in. Full import and export support for:
Anki Deck Package (.apkg)
Notes in Plain Text (.txt)
Cards in Plain Text (.txt)
⚡ Supercharging with Ninuli Pro
For power users and serious students, I integrated RevenueCat to build a robust Pro Tier (just $3.99/month). Upgrading unlocks premium superpowers:
The FSRS 4.5 Algorithm: Switch to the cutting-edge Free Spaced Repetition Scheduler for highly optimized memory retention and fewer daily reviews.
Pro Analytics & Retention Curves: Visualize your learning with weekly review bar charts, memory stability stats, and FSRS 4.5 vs SM-2 memory retention projections R(t) = 0.9^{t/S}.
Zero-Knowledge Cloud Backup: Securely back up your database to your personal Google Drive. Data is AES-256 encrypted locally using a custom Vault Password before it leaves your phone.
Expanded AI Superpowers: Unlock 10+ offline AI generations every day with advanced controls over your card generation.
🎂 Birthday Special: 28 Days of Ninuli Pro
I turn 28 on September 10th! To celebrate shipping Ninuli and hitting another milestone year, I’m giving the Product Hunt community an extended 28-day free trial of Ninuli Pro.
How to claim it:
Tap Pro in the app.
At the Google Play payment sheet, tap your payment method and select Redeem code.
Enter code NNLBDAY28 at checkout. (Valid until September 16!)
I’d love for you to download it on Android, paste in some notes, and let the offline AI do the heavy lifting.
I'd appreciate feedback on:
The quality and speed of the on-device AI card generation on your phone.
How seamlessly the .apkg and .txt imports/exports fit into your existing note-taking and study workflow.
How you feel about the transition from SM-2 to FSRS 4.5 if you try the Pro tier.
Thank you for checking out Ninuli and celebrating my 28th with me! 🚀