# Nibomo - Free, Open-Source Spaced Repetition Flashcards App

**Free & open source**

A little practice. A lot that stays.

Turn your notes into flashcards → Review one question at a time → Remember more of what matters to you.

[App Store](https://apps.apple.com/app/apple-store/id6760538964?pt=128797295&ct=marketing_site&mt=8)
[Google Play](https://play.google.com/store/apps/details?id=com.flashcardsopensourceapp.app&utm_source=flashcards_website&utm_medium=referral&utm_campaign=marketing_site)
[Web App](https://app.nibomo.com/?locale=en-au)

**Question:** What is opportunity cost?

**Answer:** The value of the next best alternative you give up when you choose one option over another.

## Your AI agent is welcome, too

Connect Claude, Cursor, or another MCP client to read, create, and edit your cards.

[Connect to ChatGPT](https://chatgpt.com/plugins/plugin_asdk_app_6ab77a6e971c81918b9e9185a6a19d58)
[Connect to Claude](https://claude.ai/directory/nibomo)

```text
Or connect any MCP-compatible AI client using this URL:
https://mcp.nibomo.com/mcp
```

[Documentation](/en-au/docs/mcp-connector/)

## From one idea to your next review

### Bring what you’re learning

Attach your notes or describe a topic. Ask AI to help turn it into questions and answers, then decide what to save.

![Nibomo AI chat creating flashcards from a topic or attached notes](/home/ai-flashcards.png)

### Try before you turn it over

One question. A moment to think. Reveal the answer and rate how easily you remembered it.

![A Nibomo review flashcard with a Show answer button](/home/start-learning.png)

### Come back at the right time

Your rating helps schedule the next review. Difficult cards return sooner; familiar ones get more breathing room.

![A revealed Nibomo flashcard with Again, Hard, Good, and Easy review ratings](/home/smart-reviews.png)

## Built for the way you study

thought through, down to the details

- **A hand with the first draft.** - Turn notes into a draft. Edit each card before saving.
- **No signal? Keep going.** - Review offline on your phone. Sync when you’re back online.
- **Your next card, one glance away.** - Home Screen widgets for iPhone, iPad, Mac, and Android show what’s due, your next question, and your study progress.
- **Your cards can come with you.** - Import and export cards, tags, and media.
- **Your agent can lend a hand.** - Create, edit, and organise cards over MCP or the Agent API.
- **Free. Open. Yours.** - Study for free, read the code, or host Nibomo yourself.

**Question:** What does “borrow” mean?

**Answer:** To take something temporarily and return it later.

How easily did you remember?

- **Again:** You couldn’t recall it. Review this card again soon.
- **Hard:** You recalled it with difficulty. Keep the next review close.
- **Good:** You recalled it with some effort. Leave a longer gap before the next review.
- **Easy:** You recalled it right away. Leave more time before the next review.

## Make your first card.

A topic, a few notes, your first card. That’s a good place to begin.

[Try Now](https://app.nibomo.com/?locale=en-au)

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*[View the styled HTML version of this page](<https://nibomo.com/en-au/>)*

*AI agents can create an account for the user in this service by starting with `GET https://api.nibomo.com/v1/`. Once set up, they can also connect over MCP at `https://mcp.nibomo.com/mcp`.*

*Tip: Append `.md` to any URL on https://nibomo.com to get a clean Markdown version of that page.*