# Cairn vs OneThing

The clearest difference is iOS requirement: Cairn at 17.0 against OneThing's 26.2. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Cairn | OneThing |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cairn-markdown-tasks/id6786663000/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 days | — |
| Monetization | Free | — |
| Size | 9 MB | 3 MB |
| Requires iOS | **17.0** | 26.2 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Young Hun JEONG](https://appshunter.io/developer/6786662344) | [Cozy Suites Realty LLC](https://appshunter.io/developer/1872608250) |

## What reviewers say

### Cairn

[App page](https://appshunter.io/ios/app/cairn-markdown-tasks/id6786663000)

Manage tasks and notes directly within your existing Markdown files. This app offers focused views, quick capture, and robust task management features, all while keeping your data private and locally stored. It integrates seamlessly with Obsidian and other file sync services.

**Highlights:** Native Markdown task and note management, Works with Obsidian vaults or any folder, Quick capture with date, tag, and priority parsing, Multiple task views (Today, Upcoming, Inbox, Pool), Full support for sub-tasks and recurring tasks, Local reminders and Live Activity integration, Data stays local, no cloud sync required

**In-app purchases:** none


### OneThing

[App page](https://appshunter.io/ios/app/onething-today/id6789434176)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Cairn free?

Cairn is free to download, with no in-app purchases.

### Is OneThing free?

OneThing is free to download, with no in-app purchases.

### Do Cairn or OneThing have ads?

Neither Cairn nor OneThing shows ads.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*