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SPECIFICTION
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Nibomo

nibomo.com

Free plan WebiOSAndroid
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Spec score 8.4 #7 of 38 in Spaced Repetition Software

What it is

Nibomo is a flashcard study app for web, iOS, and Android. Its FSRS spaced-repetition system schedules difficult cards sooner and familiar cards later, while AI can help create cards, improve their wording, and clarify answers. Studying on mobile works offline and syncs automatically. Users can import and export cards, tags, and related media, and AI agents can connect through MCP or the Agent API; the MCP server works with Claude, Cursor, or any MCP client. The hosted app is free during beta, with no credit card requirement, trial countdown, or plan-based quotas on cards, files, or total storage, though technical limits still apply. AI features and sync are included during beta, but higher AI usage may later require a provider API key or paid option. The open-source stack can be self-hosted on AWS, with infrastructure and third-party provider costs paid by the operator. Hosted sign-in uses a one-time email code rather than a password. Nibomo is built by Kirill Markin and operated by SAMO DANNI EOOD in Plovdiv, Bulgaria.

Spec sheet

Free plan
YesRead 20 Sep 2026 · nibomo.com
Mobile apps
YesRead 20 Sep 2026 · nibomo.com
Headquarters
Plovdiv, BulgariaRead 28 Sep 2026 · nibomo.com
Activity privacy
Aggregate activity figures do not expose card content, email addresses, or individual study histories.Read 28 Sep 2026 · nibomo.com
Adaptive review
YesRead 20 Sep 2026 · nibomo.com
Advertising policy
The free start page states that Nibomo has no ads.Read 28 Sep 2026 · nibomo.com
AI card creation
AI can help create cards, improve wording, and clarify answers.Read 28 Sep 2026 · nibomo.com
AI integrations
AI agents can connect through MCP or the Agent API.Read 28 Sep 2026 · nibomo.com
Authentication method
Hosted sign-in uses a one-time email code without a password.Read 28 Sep 2026 · nibomo.com
Billing requirement
No credit card is required for the hosted free app.Read 28 Sep 2026 · nibomo.com
Card formats
basicRead 20 Sep 2026 · nibomo.com
Company operator
Nibomo is built by Kirill Markin and operated by SAMO DANNI EOOD.Read 28 Sep 2026 · nibomo.com
Data portability
Cards, tags, and related media can be imported and exported.Read 28 Sep 2026 · nibomo.com
Export options
YesRead 20 Sep 2026 · nibomo.com
Free plan limits
No plan-based quotas on cards, files, or total storage during beta; technical limits still apply.Read 28 Sep 2026 · nibomo.com
Future AI billing
Higher AI usage may later require a provider API key or paid option.Read 28 Sep 2026 · nibomo.com
Hosted pricing
The hosted app is free to use with no credit card required.Read 28 Sep 2026 · nibomo.com
MCP clients
The Nibomo MCP server works with Claude, Cursor, or any MCP client.Read 28 Sep 2026 · nibomo.com
Mobile offline
Mobile studying works without an internet connection and syncs automatically.Read 28 Sep 2026 · nibomo.com
Self-hosting
The open-source stack can be run on your own AWS infrastructure.Read 28 Sep 2026 · nibomo.com
Source formats
mixedRead 20 Sep 2026 · nibomo.com
Spaced repetition
FSRS schedules reviews by bringing difficult cards sooner and familiar cards later.Read 28 Sep 2026 · nibomo.com
Study modes
flashcardsRead 20 Sep 2026 · nibomo.com
Supported platforms
Nibomo works across the web, iOS, and Android.Read 28 Sep 2026 · nibomo.com
Trial policy
There is no trial countdown.Read 28 Sep 2026 · nibomo.com

Plans and prices

Hosted Free Hosted service is free during beta 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 Read 20 Sep 2026 · nibomo.com
Self-Hosted Free Infrastructure and third-party provider costs are separate 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 Read 20 Sep 2026 · nibomo.com
Hosted Free Free Hosted app at no cost; AI features and sync included during beta. Read 28 Sep 2026 · nibomo.com
Self-Hosted Free Free You provide and maintain infrastructure and pay infrastructure and provider costs. Read 28 Sep 2026 · nibomo.com

Every Nibomo plan and price →

Strong points and limits

Strong points

  • Hosted app is free during beta without a credit card.
  • No plan-based quotas on cards, files, or storage during beta.
  • Mobile study works offline and syncs automatically.
  • Cards, tags, and media can be imported and exported.
  • AI agents can connect through MCP or the Agent API.

Limits

  • Technical limits still apply during beta.
  • Higher AI usage may later require a key or paid option.
  • Self-hosting requires paid infrastructure and provider costs.

Who it suits

Nibomo suits people who study with flashcards across web and mobile, including those who need offline mobile study. Self-hosting may suit operators prepared to maintain AWS infrastructure and cover infrastructure and provider costs.

Verdict

Nibomo offers spaced-repetition flashcards with offline mobile study, data portability, and AI features. The hosted service is free during beta, while self-hosting shifts infrastructure and provider costs to the operator.

Where Specifiction places it

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