Soto: USB & SSD Photo Backup

Free up your smartphone's storage with just this one app.

Soto is a backup app that allows you to directly transfer photos and videos to external storage such as USB drives and SSDs without using the cloud. It supports importing from external sources and resizing according to your storage needs, enabling you to manage the "portability" and "lightweight" aspects of your photos and videos all in one place.

No internet required. No hassle in choosing (resizing according to purpose is optional). Backups are done without degradation.
You can organize your smartphone data quickly, safely, and reliably.

【Reasons to Choose Soto】

Automatically find untransferred data
No need to scroll back through your camera roll anymore.
Soto automatically identifies photos and videos that have not yet been transferred. With just one tap, you can back them up without hesitation.

Save in original quality at the time of shooting
4K and 8K videos, high-resolution photos, and RAW data are backed up without compression or conversion.
You can save them to external storage without losing the beauty captured at the time of shooting.
(If you want to lighten the files for your device, optional resizing is also available.)

Supports importing from external storage
Easily import photos and videos organized on your PC or other devices to your smartphone via external storage.
The flow of "bringing back and re-editing" is smooth, not just for backups.

No internet required. Everything is completed at your fingertips.
Photos and videos are never sent to external servers.
Since it operates without the internet, you can always manage your important data right at your fingertips.

【Features】

- One-tap transfer
Bulk backup of untransferred data to connected USB drives/SSDs/SD cards.

- Optional resizing
Lighten photos and videos according to your needs. Efficiently use storage and sharing destinations according to capacity. (Backing up in original quality is also possible.)

- Import from external storage
Import saved media to your smartphone. Convenient for bringing back from the field or moving between devices.

- Deletion assist feature
Identify only the data that has been successfully transferred. Safely delete from your smartphone and ensure available storage.

- Fast and stable transfer
Stable connectivity unique to physical connections, unaffected by Wi-Fi environments.

- Wide compatibility with external storage
Broad compatibility with external SSDs, USB drives, SD card readers, and other iOS-compatible external storage.

【For those who】

- Want to reduce monthly iCloud fees or are running out of storage
- Quickly fill up storage with 4K videos or RAW photos
- Want to not only back up but also import from external sources and resize to lighten their device
- Want to back up in places without internet access, such as travel destinations or shooting locations
- Do not want to entrust important photos or work data to the cloud

*This app directly saves to the external storage connected by the user.
*We do not access your photo and video data.