Nibomo
Nibomo is a flashcard study app for the web, iOS and Android.
What Nibomo is
Nibomo is a flashcard study app for the web, iOS and Android. Its FSRS spaced-repetition system schedules reviews so difficult cards come sooner and familiar ones later. AI can help create cards, refine their wording and clarify answers. Users can import and export cards, tags and related media, and connect AI agents through MCP or the Agent API. Mobile studying works offline and syncs automatically. The hosted app is free during beta, with no credit card requirement, trial countdown or plan-based quotas on cards, files or total storage; technical limits still apply. AI features and sync are included during beta, though higher AI usage may later require a provider API key or paid option. Nibomo also offers an open-source stack that users can run on their own AWS infrastructure; infrastructure and third-party provider costs are separate. Hosted sign-in uses a one-time email code instead of a password. Nibomo says aggregate activity figures do not expose card content, email addresses or individual study histories, and its free start page says the app has no ads. The maker is based in Plovdiv, Bulgaria.
Good
- FSRS schedules reviews based on card familiarity.
- Mobile studying works offline and syncs automatically.
- Cards, tags and media can be imported and exported.
- Hosted service requires no credit card during beta.
- Open-source stack can be self-hosted on AWS.
Watch out
- Self-hosting requires users to cover infrastructure costs.
- Higher AI usage may later require a key or paid option.
- Hosted service has no plan-based quotas only during beta.
Who it suits
Nibomo suits people who want flashcards across web and mobile, including offline study on mobile. It may also suit users who want to export their study materials or self-host the open-source stack.
Verdict
Nibomo combines flashcards, spaced repetition, mobile offline study and AI-assisted card work. The hosted app is free during beta, while self-hosting carries separate infrastructure and provider costs.
Plans and prices
From Nibomo's own pricing page, checked 20 Sep 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Hosted | Free | AI features included during beta · Sync across web, iOS, and Android · No plan-based quotas on cards, files, or total storage during beta · Import and export cards, tags, and media · Hosted service is free during beta |
| Self-Hosted | Free | Open-source application and AWS CDK infrastructure · AWS deployment path and local Docker/Postgres setup · Infrastructure and third-party provider costs are paid by the operator · Infrastructure and third-party provider costs are separate |
| Hosted Free | Free | Hosted app at no cost; AI features and sync included during beta. |
| Self-Hosted Free | Free | You provide and maintain infrastructure and pay infrastructure and provider costs. |
The facts
Each one read from Nibomo's own pages, with the date it was checked.
What it does
- Activity privacy
- Aggregate activity figures do not expose card content, email addresses, or individual study histories.checked 28 Sep 2026
- Adaptive review
- Yeschecked 20 Sep 2026
- Advertising policy
- The free start page states that Nibomo has no ads.checked 28 Sep 2026
- AI card creation
- AI can help create cards, improve wording, and clarify answers.checked 28 Sep 2026
- AI integrations
- AI agents can connect through MCP or the Agent API.checked 28 Sep 2026
- Authentication method
- Hosted sign-in uses a one-time email code without a password.checked 28 Sep 2026
- Card formats
- basicchecked 20 Sep 2026
- Data portability
- Cards, tags, and related media can be imported and exported.checked 28 Sep 2026
- Export options
- Yeschecked 20 Sep 2026
- Hosted pricing
- The hosted app is free to use with no credit card required.checked 28 Sep 2026
- MCP clients
- The Nibomo MCP server works with Claude, Cursor, or any MCP client.checked 28 Sep 2026
- Mobile offline
- Mobile studying works without an internet connection and syncs automatically.checked 28 Sep 2026
- Self-hosting
- The open-source stack can be run on your own AWS infrastructure.checked 28 Sep 2026
- Source formats
- mixedchecked 20 Sep 2026
- Spaced repetition
- FSRS schedules reviews by bringing difficult cards sooner and familiar cards later.checked 28 Sep 2026
- Study modes
- flashcardschecked 20 Sep 2026
Money
- Billing requirement
- No credit card is required for the hosted free app.checked 28 Sep 2026
- Free plan
- Yeschecked 20 Sep 2026
- Free plan limits
- No plan-based quotas on cards, files, or total storage during beta; technical limits still apply.checked 28 Sep 2026
- Future AI billing
- Higher AI usage may later require a provider API key or paid option.checked 28 Sep 2026
The company
- Company operator
- Nibomo is built by Kirill Markin and operated by SAMO DANNI EOOD.checked 28 Sep 2026
- Headquarters
- Plovdiv, Bulgariachecked 28 Sep 2026
Where it runs
- Mobile apps
- Yeschecked 20 Sep 2026
- Supported platforms
- Nibomo works across the web, iOS, and Android.checked 28 Sep 2026
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