MonTri
Swipe to sort your photos.
Clean up your gallery with a single gesture: right to keep, left to delete. MonTri runs 100% locally on your device, no photo is ever uploaded to the cloud.
Inside this edition
Gallery sorting, at thumb speed.
Swipe sorting
Right to keep, left to delete. An intuitive interface to clean your gallery in just a few minutes.
Trash review
Before any permanent deletion, review the photos again. Change your mind and recover an image at any time.
Filter by date or album
Precisely target the images to sort by filtering by period or folder, without scrolling through everything.
Sort by size or date
Sort photos by date or file size to spot the largest ones and free up the maximum amount of space.
100% local processing
Every operation happens on your device. No photo is transferred to a server or the cloud.
Privacy-focused
No account, no data collection, no tracking. Clean your gallery with complete peace of mind.
Why MonTri?
A smartphone gallery overflows with useless shots: duplicates, blurry photos, forgotten screenshots, failed selfies. Storage fills up, the device slows down, and finding an important photo becomes a headache.
MonTri solves this with an ultra-fast swipe interface, right to keep, left to delete, using gestures you already know. Everything is processed locally: no image is sent to the cloud. Filter, sort by size, review the trash before deleting. Free, with a one-time purchase for the Premium version.
In brief
What is MonTri?
MonTri is a free photo-gallery cleaning app for iOS and Android. Users sort their photos with a gesture: right to keep, left to delete. All processing happens locally on the device, with no cloud and no account. A trash review step protects against accidental deletions.
Read the guide: Free up iPhone and Android storage without losing photosFrequently asked
Everything people ask us.
Is MonTri an alternative to Slidebox or Gemini Photos?
Yes. MonTri offers the same swipe-based sorting as Slidebox or Gemini Photos, but 100% on-device: no photo is uploaded to the cloud.
How much space can I free up?
In about ten minutes of swiping, most users recover several gigabytes by deleting duplicates and unused screenshots.
Discover next
Other editions from the catalogue.
Clean your gallery.
Free on the App Store and Google Play. No account, no photo in the cloud.
Privacy and terms of use