# OpenCards — Organize Your Knowledge

> Markdown note organizer and flashcard app with iCloud sync. (iPhone/iPad app by 礼 付.)

- Source: https://appshunter.io/ios/app/opencards/id6760596083 (this page in markdown: same URL + `.md`)
- Developer: [礼 付](https://appshunter.io/developer/1487345625)
- Category: Utilities, Productivity
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 18.6 · 2 MB
- Languages: American English, French (France), Japanese, Korean, Chinese (Simplified, China), European Spanish
- Released: 2026-03-19
- Data updated: 2026-06-27
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/opencards/id6760596083/reviews.md

## What is OpenCards?

OpenCards — Organize Your Knowledge
                                                                                                                                                            
Turn your Markdown notes into beautiful, browsable knowledge cards. OpenCards helps you organize, review, and carry your knowledge everywhere.

Organize Your Way
Create sections to group your cards by topic — class notes, research papers, vocabulary, or anything you need. Browse cards in a smooth horizontal carousel or search across your entire collection instantly.

Rich Markdown Rendering
OpenCards renders full Markdown with support for math equations (KaTeX), syntax-highlighted code blocks, tables, and more. Your content looks great in both light and dark mode.

Tag, Like & Filter
Mark your favorite cards with a like. Add tags to categorize and find cards quickly. Filter any section by likes or tags to focus on what matters.

Full-Screen Reading
Tap any card to enter an immersive full-screen view. Swipe through cards one by one — perfect for studying and review.

iCloud Sync
Your cards sync automatically across all your devices via iCloud. Start on your iPhone, continue on your iPad.

Import from GitHub
Paste a GitHub folder URL to bulk-import Markdown files directly into any section. Great for pulling in shared notes, study materials, or documentation.

Key Features
- Markdown cards with math (KaTeX) and code highlighting
- Organize cards into sections
- Tags and likes with per-section filtering
- Full-screen card feed with swipe navigation
- Global search across all cards
- iCloud sync across devices
- GitHub Markdown import

Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Key features

- Markdown cards with math and code highlighting
- Organize cards into sections
- Tags and likes with filtering
- Full-screen swipe navigation
- Global search
- iCloud sync
- GitHub Markdown import

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| OpenCards Pro | $0.99 | per month |



## Frequently asked questions about OpenCards

### What is OpenCards?

OpenCards is a utility app that transforms your Markdown notes into browsable knowledge cards. It helps you organize, review, and access your information across your devices.

### How does OpenCards organize knowledge?

You can create sections to group cards by topic, such as class notes or research papers. Cards can be browsed in a carousel or searched across your entire collection.

### Does OpenCards support advanced formatting?

Yes, OpenCards renders full Markdown, including support for math equations using KaTeX, syntax-highlighted code blocks, and tables. It also offers both light and dark modes.

### How does OpenCards sync across devices?

OpenCards utilizes iCloud sync to automatically update your cards across all your Apple devices, allowing you to start on one and continue on another.

### Can I import notes from other sources into OpenCards?

Yes, you can import Markdown files in bulk by pasting a GitHub folder URL. This is useful for bringing in shared notes or study materials.

### What are the pricing details for OpenCards?

OpenCards is free to download and use. There is an optional 'OpenCards Pro' subscription available for $0.99 per month for enhanced features.

### Does OpenCards have ads?

No, OpenCards does not contain advertisements. The app is free with optional in-app purchases for its Pro subscription.

### What devices are supported by OpenCards?

OpenCards is available on Mac, iPhone, and iPad, ensuring a consistent experience across your Apple ecosystem.

## Version history (last 4 releases)

### 1.3 — 2026-05-18

Fixed known issues and improved the user experience.

### 1.2 — 2026-04-12

- Improved overall user experience  
- Improved the section import experience
- Added tag management

### 1.1 — 2026-03-28

- Improved overall performance and user experience  
- Added text editing support  
- Added support for multiple languages  
- Added dark mode support  
- Added tag management
- Fixed some bugs

### 1.0 — 2026-03-20

No release notes.

## More apps by 礼 付

- [Text Flows](https://appshunter.io/ios/app/text-flows/id6450016607)

All apps by 礼 付: https://appshunter.io/developer/1487345625

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-27.*