Pier lets you save snapshots of your project folder. Add a short note and move on. If things go sideways, you can browse your full history and jump back to any earlier version — or pull out just a single file from the past.
3-2-1 rule: Pier lets you keep three copies of your files, on two different types of storage, with one stored somewhere else entirely. 1. Your project folder, now with full version history. 2. An external drive whenever the drive is connected. 3. A cloud folder.
[Pier on the App Store](https://apps.apple.com/app/id6761289908)
Common issues
Git not found
Pier requires the Xcode Command Line Tools. The app will guide you through installation, or you can open Terminal and run:
xcode-select --installThis is a one-time download that can take several minutes.
Nothing happens when I add a folder
Make sure the folder is on your Mac's internal drive and that you have read and write access to it. Pier cannot watch folders on network volumes or external drives that are formatted as read-only.
A file is missing from my timeline
Pier ignores certain files by default, including system files, caches, and files listed in .gitignore. If a specific file should be tracked, check whether it matches an ignore rule.
Versions are taking up too much space
Each version only stores what changed, so disk usage grows slowly. If you need to reclaim space, you can remove a folder from Pier and delete its history from Settings.
Reset Pier
To start fresh, use Settings > Reset Pier in the app. This removes all tracked folders and their version history.
Contact
For bug reports and feature requests, send an email.