Press Kit

Name: Undolly
Developer: David Collado (solo, indie)
Platform: iOS 26+, iPhone and iPad. Built native for Liquid Glass.
Privacy: 100% on-device. No account. Photos never leave the device.
Pricing: Free to try. Subscription or one-time lifetime unlock.
Languages: English, Spanish, German.
Availability: Worldwide on the App Store.

Undolly is an iOS app for two things people do with their photos: keeping the phone clean, and going back through the ones that matter. iOS 26 native, 100% on-device.

The story

I built Undolly around cleaning up similar photos. We all have galleries full of near-identical takes, and Undolly helps you find the best one and drop the rest. It had a side effect I did not plan for: going through your library one small set at a time, in a slow and human way, made people reconnect with their own memories.

But most of what fills a phone is not similar photos. It is screenshots, big videos, a random day with 200 pictures. So version 4.0 adds a new way to review anything one item at a time: swipe to keep, swipe to delete, swipe up to favorite. It does not replace the similar-photo cleanup, it sits next to it. Undolly now does much more.

What's new in 4.0

A new one-item-at-a-time review for photos and videos. Swipe to keep, delete or favorite.
8 cleanup modes: similar photos, screenshots, big videos, screen recordings, WhatsApp media, Telegram media, RAW, panoramas.
Pick any day or month and just go through it. No "similar" required.
Smart suggestions that read your library and tell you where to start: the photos from today, a busy weekend, a video quietly taking gigabytes.
On-device video compression. Keep the big videos you do not want to delete and still recover most of the space.
iOS 26 Liquid Glass UI throughout.