OmniDiskSweeper alternative: Peekaboo vs OmniDiskSweeper
By Vishva Variya · Updated
OmniDiskSweeper is about as plain as disk tools get, and that’s the appeal: it lists what’s on your drive from largest to smallest and lets you trash or open things straight from the list. The Omni Group gives it away under Omni Labs, the software it built for itself. The current download, version 1.16, is a universal app for macOS 11 and later. Peekaboo’s Disk Usage answers the same question in a similar way, then gives you more to act with.
Looking for OmniDiskSweeper itself? It’s at www.omnigroup.com.
- OmniDiskSweeper price
- Free download (Omni Labs)
- OmniDiskSweeper requires
- macOS 11 (version 1.16, from the app’s own Info.plist) or later
- Peekaboo
- $24.99 one-time (launch price $9.99 until Nov 9), 14-day trial, macOS 14+
OmniDiskSweeper figures from omnigroup.com/more and Omni’s download of OmniDiskSweeper 1.16, verified 2026-11-02.
Why pick Peekaboo over OmniDiskSweeper?
Space macOS frees by itself
Disk Usage lists every folder by size and sets apart the iCloud copies, caches and snapshots macOS reclaims on its own, so you don’t delete something that would have gone anyway.
A picture as well as a list
Space Map draws the disk as an interactive sunburst by category and folder. Click a slice to drill in, and send what you don’t need to the Trash from the map.
Big because of copies
A size list can’t tell you a 4 GB folder is a copy of another one. Peekaboo finds exact duplicates by SHA-256 and look-alike photos by Apple Vision, and every cleanup can be put back in one click.
Peekaboo vs OmniDiskSweeper, job by job
| Job | OmniDiskSweeper | Peekaboo |
|---|---|---|
| What fills the drive | Files and folders listed largest to smallest | Disk Usage by folder size, plus the Space Map sunburst |
| Removing something | Trash it from the list | To the Trash, recorded so the whole cleanup can be put back |
| Duplicates and app leftovers | Not offered | Exact and look-alike duplicates; App Uninstaller with leftovers |
| Caches | Not offered | App Caches, explained folder by folder |
| Price and macOS | Free; 1.16 needs macOS 11 | One-time per Mac after a 14-day trial; macOS 14 or later |
The honest verdict
For a quick, free look at what’s biggest, OmniDiskSweeper is hard to beat, and it runs on Macs back to macOS 11, which Peekaboo doesn’t. Pick Peekaboo when sizes are only the start: you want to see space macOS will free on its own, find the copies, clear app leftovers and caches, and undo a cleanup that went too far.
OmniDiskSweeper vs Peekaboo: questions
Is OmniDiskSweeper free?
- Yes. Omni offers it as a direct download under Omni Labs, with no price listed, as of November 2, 2026.
Is OmniDiskSweeper still updated?
- Omni’s current download is version 1.16, a universal app that needs macOS 11 or later; its file on Omni’s download server is dated September 12, 2025. The Omni Labs page doesn’t give release notes.
Does Peekaboo show files largest first like OmniDiskSweeper?
- Yes. Disk Usage lists every folder on the disk by size, and Clean Up’s Large Files view lists the biggest files.