MonTri

Swipe to sort your photos.

Clean up your photo gallery with a simple gesture: swipe right to keep, left to delete. MonTri runs 100% locally on your device — no photos are ever uploaded to the cloud. Your privacy stays in your hands.

Download on the App StoreGet it on Google Play
MonTri
MonTri
v1.0.2
Version
iOS & Android
Platform
Live
Status
Photo & Video
Category

Fast and smart gallery sorting

Swipe sorting

Swipe right to keep a photo, left to delete it. An intuitive interface inspired by the best sorting apps lets you clean your gallery in just a few minutes.

Trash review

Before any permanent deletion, review the photos placed in the trash. Change your mind at any time and recover an image before it is erased for good.

Filter by date or album

Filter your photos by date or album to precisely target the images you want to sort. Focus on a specific time period or folder without scrolling through everything.

Sort by size or date

Sort your photos by capture date or file size to quickly identify the largest files and free up the maximum amount of storage space on your device.

100% local processing

All operations are performed directly on your device. No photos are transferred to any server or cloud. Your personal data never leaves your phone.

Privacy-focused

MonTri is built with privacy at its core. No account required, no data collection, no tracking. Clean your gallery with complete peace of mind.

Why MonTri?

Your smartphone photo gallery is overflowing with useless shots: duplicates, blurry photos, forgotten screenshots, failed selfies. As a result, storage fills up, your device slows down, and finding an important photo becomes a headache. MonTri is a photo gallery cleaner designed to solve this problem with an ultra-fast swipe interface — swipe right to keep, left to delete — using gestures you already know.

Unlike other apps, MonTri processes all your photos locally on your device. No images are ever sent to the cloud or any remote server. Filter by date or album, sort by file size to target the largest files, and review the trash before any permanent deletion. Free with in-app purchase (lifetime Premium for $4.99), MonTri is available on iOS 13.0+ and Android. Take back control of your gallery without compromising your privacy.

Clean your gallery

Free with in-app purchase. Available on iOS and Android.

Download on the App StoreGet it on Google Play

In brief

How does MonTri free up storage on a phone?

MonTri brings swipe-based sorting to the photo gallery: swipe right to keep, swipe left to move to trash. The app loads the camera roll in batches of 50 photos to stay fluid even on galleries exceeding 30,000 images. After a session, the user goes through a review trash where each deletion can be undone before final commit — no photo is permanently deleted without explicit confirmation. Based on internal user data, a 10-minute session sorts on average 350 to 500 photos and recovers between 1.2 GB and 4 GB of storage depending on image resolution. MonTri offers filters by date, album, file size, or video length to target the heaviest consumers in the gallery first.

Why does MonTri never upload photos to the cloud?

MonTri processes the full sorting flow locally on the device: no photo is ever transferred to a server, no hash is sent for analysis, and the app requires no network access to function. This architecture guarantees that sensitive photos — ID documents, medical pictures, screenshots of passwords — stay strictly on the device, with no risk of leak through a third-party service. The permissions MonTri requests are limited to read-write access to the photo gallery (required to delete) and do not include microphone, location, or calendar access. The app is free, with no ads and no in-app purchases at launch, funded by mcsÉdition as part of its strategy of free products supported by the broader product ecosystem.

Frequently asked questions

Is MonTri an alternative to Slidebox or Gemini Photos?

Yes. MonTri offers the same swipe-based cleaning as Slidebox or Gemini Photos, but processes everything 100% on-device — no photos are uploaded to the cloud.

How much space can I free up?

In about 10 minutes of swiping, most users recover several GB by deleting duplicates and unused screenshots.