Pristo

Support

Answers to common questions about downloading, buying Pro and troubleshooting Pristo™. Can’t find what you need? Email support@pristo.app and we’ll help directly.

Download

Pristo is free to download, with no credit card or account required. See Free and Pro on the home page for what each includes.

Pro and purchases

Pro is a one-time purchase, not a subscription. It removes the Free cleanup limit for good.

On a computer, your license activates automatically after checkout, and there’s no account to create. Make sure the app has an internet connection the first time you open it after buying, since activation and updates both need one. Scanning and cleanup work fully offline.

If you’ve reached your device limit, need to move your license to a new computer, or your license isn’t activating, email support@pristo.app with your purchase receipt or order email and we’ll sort it out.

On a phone or tablet, Pro is bought inside the app through the App Store or Google Play. To restore it on a new device, open Settings in the app and tap Restore purchases.

For refund eligibility, see the Terms of Service.

Troubleshooting

If something isn’t working as expected:

  • The app won’t open, or a security warning appears. This is common for downloaded installers on both Windows and Mac. Confirm you downloaded from the links above, then follow your system’s prompt to allow the app to run.
  • A photo format or RAW file isn’t detected. Check it’s one of the supported formats. If it’s on the list and still isn’t picked up, send us a diagnostics log (see below) so we can look into it.
  • Scanning is slow on a large library. First scans of large libraries take longer, especially on spinning disks or with many RAW files. 8 GB of RAM or more is recommended for large libraries.
  • A change in Settings didn’t take effect. Try restarting the app.

For anything else, sending us the diagnostics log is usually the fastest way to a fix. The log is stored only on your device and never includes your photos or license key. See the Privacy Policy for exactly what’s in it. Attach the log file to a support email, and clear it anytime from the app’s Settings screen.

Frequently asked questions

Does Pristo upload my photos anywhere?

No. Scanning and cleanup run entirely on your own device. Nothing about your photo library is uploaded to us or anyone else.

Is Pro a subscription?

No. Pro is a one-time purchase. No renewals, no expiration.

What’s included for free?

Unlimited scanning and unlimited exact-duplicate cleanup, plus a full preview of every Similar, Burst, Screenshot and Low-quality group, with a first batch of cleanup in those categories included.

What file formats are supported?

Everyday formats (JPG, PNG, HEIC, TIFF, WebP and BMP) plus camera RAW from Nikon, Canon, Sony, Panasonic, Olympus, Pentax and Fujifilm, and Adobe’s DNG.

What are the system requirements?

On a computer: Windows 10 or 11 (64-bit) or macOS 12 or later, 4 GB of RAM (8 GB recommended for large libraries), and about 250 MB of free disk space.

What languages does Pristo support?

English, German, Spanish, French, Italian, Japanese, Korean, Portuguese (including Brazilian Portuguese), Russian, and Chinese (Simplified). Switch anytime from the Settings screen.

Does video cleanup work yet?

Not yet. Pristo handles photos today; finding duplicate and similar videos is planned for a future release.

Still need help?

Email support@pristo.app. Include your purchase receipt or order email if your question is about a license, and a diagnostics log if you’re reporting a bug.