Sia Storage
Productivity
Free
Sia Storage is the world's safest cloud storage, by design. Your files are encrypted on your device before they ever leave your phone, split into 30 pieces using erasure coding, and distributed across a decentralized network of hosts worldwide. Only 10 of those 30 pieces are needed to recover your data — no single point of failure, no central server to breach.
YOUR DATA, YOUR KEYS
Sia Storage uses end-to-end encryption. Your recovery phrase is the only key to your data — not even Sia can access your files. No tracking, no ads, no data harvesting.
STORE AND ORGANIZE
Upload photos, videos, and documents. Organize files into folders, tag them for quick access, and mark favorites. Browse your library with search and filtering by file type.
AUTOMATIC PHOTO BACKUP
Enable archive sync to automatically back up your photo library to the Sia network. Track progress as your photos are encrypted and uploaded in the background.
MULTI-DEVICE SYNC
Access your files from any device. Sia Storage syncs your encrypted library across devices through your indexer — add a file on your phone, see it on your desktop.
FILE VERSIONING
Upload updated versions of files and browse their history. Sia Storage keeps track of versions so you never lose previous work.
HOW IT WORKS
Traditional cloud storage trusts a single company with your data. Sia splits your encrypted files across dozens of independent hosts using erasure coding. Even if hosts go offline, your data remains available and intact. Learn more in the app's built-in guides.
IMPORT FROM ANYWHERE
Take a photo or video directly in the app, choose from your photo library, or import from the Files app. Share files from any app on your phone directly into Sia Storage.
OPEN SOURCE
Sia Storage is built by The Sia Foundation, a non-profit dedicated to decentralized storage. The app is fully open source.
- Improved file sync consistency across devices.
- Fixed an issue that could cause app initialization to get stuck.
The developer, Sia Storage, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- The Sia Foundation Inc
- Size
- 53.8 MB
- Category
- Productivity
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - iPad
Requires iPadOS 16.0 or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
13+
- 13+
- Copyright
- © 2026 The Sia Foundation Inc.