Know what you're changing before you change it.

Cairn is a safety-first storage and cleanup tool for the Mac. It explains what it finds, sorts items by risk, and removes nothing until you confirm.

What it does

A Mac storage tool that explains itself

Cairn scans your Mac, tells you what it found and why, sorts every item by risk, and shows you exactly what will happen before anything is removed. Scanning and analysis are free; cleaning needs Cairn Pro.

Storage analysis

Large and old files, Downloads, installers, disk images, caches, logs and the Trash, with a clear space breakdown.

Safe, Review or Protected

Every item is classified by a deterministic safety engine. Protected items never enter automatic cleanup.

Recovery

Removed items go to the Trash first. Browse them, restore to the original place or another folder, and never overwrite existing files.

Duplicates

Finds byte-for-byte duplicates using size, chunked and full content hashing. One copy is always kept.

Similar photos

Groups visually similar images from a folder you choose. Cairn does not open or modify your Photos library.

Apps, privacy & developer caches

Uninstall apps and their leftovers, review browser traces by location and filename, and reclaim Xcode and package-manager caches.

How it works

Scan. Understand. Review. Clean. Verify.

There is no "delete everything that looks like junk" button. Every cleanup follows the same path, and nothing is removed until you confirm it.

Items are checked again immediately before removal, and reclassified if the disk has changed
Unsafe paths and symbolic links are refused
The result is verified afterwards and reported honestly
Optional on-device AI only explains findings. It can never authorize a deletion

Private by design

Account: None required
Analytics & ads: None
Your files: Never uploaded
Requires: macOS 14 or later

Pricing

Free to analyze. Pro to clean.

Scan and review everything for free. Cairn Pro unlocks cleanup, Empty Trash, recovery, app uninstall, duplicate and similar-photo removal, and the privacy, developer and maintenance actions. All three plans include the same features, and a 24-hour Pro trial lets you try them before you pay.

Monthly

$4.99 / month

Billed monthly and renews automatically until cancelled.

Checkout opens at launch

Yearly

$29.99 / year

Billed yearly and renews automatically until cancelled. About half the cost of Monthly.

Checkout opens at launch

Lifetime

$49.99 one-time

One payment, no subscription, access to Cairn Pro with no renewal.

Checkout opens at launch

Prices are in US dollars and may be shown with applicable taxes at checkout. Purchases made on this website are processed by Paddle, our merchant of record. See the Terms of Use, Refund policy and Cairn privacy policy.

Questions

Ask us before you buy

Cairn is published by Hastech, operated by Muhammad Wajih ul Hassan. Write to mwajih012@gmail.com and we will reply within 24–48 hours.