# Kasten - Zettelkasten Cards — Linked thinking, plain text

> Linked thinking, plain text (iPhone/iPad app by Nakada Kyota.)

- Source: https://appshunter.io/ios/app/kasten-zettelkasten-cards/id6773039008 (this page in markdown: same URL + `.md`)
- Developer: [Nakada Kyota](https://appshunter.io/developer/1896491562)
- Category: Productivity
- Price: Free
- Age rating: 4+
- Requires: iOS 15.0 · 3 MB
- Languages: American English
- Released: 2026-05-28
- Data updated: 2026-07-27
- User reviews in markdown: https://appshunter.io/ios/app/kasten-zettelkasten-cards/id6773039008/reviews.md

## What is Kasten?

Kasten is a Zettelkasten note-taking app built around one idea: thoughts grow through connections, not collections.

Write a card. Link it to another. Follow the chain.

LUHMANN-STYLE CARD IDs
Every card gets a unique ID based on where it fits in your thinking — 21/3b, 21/3b1, 21/3ba. Branch off in a new direction or continue a thread, and the ID reflects the relationship automatically.

THREE TYPES OF LINKS
Sequence — continue the same line of thought
Branch — explore a new angle from the same point
Reference — connect ideas across different contexts

YOUR FILES, YOUR WAY
Cards are stored as plain Markdown files in iCloud Drive. Open them in any text editor. No lock-in, no proprietary format.

WIKI-LINK SYNTAX
Type [[ to link to any card by ID or title. Unresolved links are flagged so nothing gets lost.

DRAFT AND PERMANENT
Mark cards as draft while thinking, permanent when the idea is settled. A simple toggle, no ceremony.

Kasten is for people who think by writing — researchers, writers, and anyone building a personal knowledge base over years, not weeks.


## Version history (last 1 release)

### 1.0 — 2026-05-28

No release notes.

## More apps by Nakada Kyota

- [Nodus - Zettelkasten](https://appshunter.io/ios/app/nodus-zettelkasten/id6767599315)

All apps by Nakada Kyota: https://appshunter.io/developer/1896491562

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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 2026-07-27.*