FileTwin — duplicate & document checker
Find your files' twins.
FileTwin scans any folder or drive for byte-for-byte duplicate files, plus something most tools miss: files with the same name but content that's drifted apart — like a letter saved twice with a different closing line. It tells you which copy to keep. You decide the rest.
What it finds
Exact duplicates
Every file is hashed and compared — two files only count as duplicates if their content matches exactly, byte for byte. Works across any number of folders or drives at once, so you can compare a backup drive against your main one directly.
Same name, different day
Files that share a filename but aren't identical get compared on content similarity — the classic case is a document re-saved in a different folder with small edits. FileTwin flags how similar they are and recommends keeping the most recently modified copy.
You decide
Nothing is deleted automatically. Every group shows a recommended copy to keep, with checkboxes for the rest. Removal goes to the Recycle Bin by default — permanent deletion requires a deliberate second confirmation.
Free to try, honestly
Without a license
- Full duplicate + similar-file detection
- Up to 20 files per scan
- Unlimited number of scans
- Recycle Bin removal included
Licensed
- Everything in the free tier
- No file-count limit per scan
- Use on up to 2 devices, move anytime
- One-time purchase, not a subscription
Pricing
Pricing is being finalized ahead of launch. FileTwin will be a one-time purchase — no subscription. Leave your email above and we'll let you know the moment it's live.
Have an idea for FileTwin?
Tell us what would make FileTwin more useful to you. If we build your idea, we'll pay you for it — leave an email if you'd like the chance.