# Cairn - 차곡차곡 — Stack today's tasks, calmly

> Stack today's tasks, calmly (iPhone/iPad app by Heajung Yoo.)

- Source: https://appshunter.io/ios/app/cairn/id6767776784 (this page in markdown: same URL + `.md`)
- Developer: [Heajung Yoo](https://appshunter.io/developer/1895444232)
- Category: Productivity, Lifestyle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.0 · 41 MB
- Languages: American English
- Released: 2026-05-30
- Data updated: 2026-08-27
- User reviews in markdown: https://appshunter.io/ios/app/cairn/id6767776784/reviews.md

## What is Cairn?

Cairn (차곡차곡) is a calm, anonymous-first todo app — every core feature works without an account.
  Like the small stones stacked into a cairn on a quiet trail, line up today's tasks one by one with clarity.

  ■ Core features

  - Anonymous by default: no sign-up, no transmission. All data stays on your device.
  - Inline markers: type @, #, !, * to set date, time, importance, and repeat in one line. e.g. "@tomorrow #3pm meeting", "*every-monday run".
  - Two-way swipe: left for reschedule / favorite / repeat. Right for duplicate / move group / delete.
  - Groups and color labels: organize by work, personal, fitness — at a glance.
  - Notifications with quiet hours: push reminders that auto-defer to the next morning during quiet hours.
  - Stats dashboard: weekly / monthly / yearly completion, 14-day sparkline, average completion time.
  - Backup & restore: JSON / CSV / Markdown export and import. Move devices safely.
  - Dark mode and three themes (Tica, Tally, Nudge).
  - English / Korean auto-detected.

  ■ Tracks

  - Anonymous (default): full core, on-device only.
  - Pro: ad-free — one-time purchase, yours forever.

  ■ What we don't collect

  No location, contacts, photos, microphone, camera, or health data.
  In anonymous mode, not a single byte leaves your device.

  ■ About

  Sobok — building small tools that add quiet order to daily life.

  Contact: admin@sobok.kr
  Privacy / Terms: https://sobok.kr/carin/legal/terms

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Cairn Pro Monthly | $1.99 | per month |
| Cairn Pro yearly | $12.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Cairn Pro - Ad-free forever | $0.99 | one-time |



## Version history (last 5 releases)

### 1.2.0 — 2026-07-07

Meet your Weekly Supporter.
Every Sunday, AI helps you wrap up the past week — it reschedules what slipped into next week, eases overloaded days, and lets you add new tasks right in the chat.
Included with your Cairn Cloud subscription.

### 1.1.4 — 2026-06-30

A small round of polish and fixes.

· The monthly calendar now swipes left and right to change months, just like the weekly view.
· The Apple Watch timeline shows a live "now" marker and follows your app theme.
· Fixed spacing in the large widget that spread too far apart when you had only a few tasks.
· Fixed a crash that could happen when uploading a profile photo.

### 1.1.3 — 2026-06-29

A big update to make your day clearer.

· The Home screen is redesigned as a time-ordered timeline. Tap the calendar up top to move between dates and see, at a glance, where you are and what you've finished.
· Stats got a refresh too — a monthly review calendar plus weekly, monthly, and yearly breakdowns.
· Turn your photo into your own character avatar to make Cairn feel like you.
· Home Screen widgets and Apple Watch now share the same timeline, and syncing across devices is more reliable.

We also polished many details. Core features still work with no sign-in.

### 1.1.2 — 2026-06-21

This update focuses on stability and polish.

  · Stabilized ad/Pro state detection so ads no longer briefly appear for Pro users.
  · Fixed the lifetime purchase so it stays active after signing out.
  · Redesigned in-app notifications to sit calmly at the bottom of the screen.
  · Fixed input field and tabs overlapping when the keyboard opens on smaller screens.
  · Fixed the time input overflowing on the date & time picker.

  Stack today, calmly.

### 1.1.1 — 2026-06-18

• Improved our server setup for more reliable cloud sync.
• Polished small bugs and overall stability.

## Apps similar to Cairn

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Cairn Tasks](https://appshunter.io/ios/app/cairn-tasks/id6760798908) | 5.0 (2) | Free | Productivity |
| [Done It: Tasks & Reminders](https://appshunter.io/ios/app/done-it-tasks-and-reminders/id6758676788) | — | Free | Productivity |
| [DayPlan: Daily Planner](https://appshunter.io/ios/app/dayplan-daily-planner/id6766235201) | 5.0 (1) | Free | Productivity |
| [Du-It - Reminders](https://appshunter.io/ios/app/du-it-reminders/id6785280838) | — | Free | Productivity |
| [Real Minder](https://appshunter.io/ios/app/real-minder/id6753836448) | 5.0 (2) | Free | Productivity |
| [gtsync: Sync Tasks & Reminders](https://appshunter.io/ios/app/gtsync-sync-tasks-and-reminders/id6761292407) | 5.0 (1) | $4.99 | Productivity |

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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 2026-08-27.*