Sia Storage

Spec sheet

What it does

Sia Storage offers encrypted, decentralized cloud storage with a free tier starting at 50 GB.Read 11 Oct 2026 · sia.storage

Free plan

YesRead 21 Sep 2026 · sia.storage

Support

Sia Storage lists its Discord community and email as support channels.Read 11 Oct 2026 · sia.storage

Headquarters

Wilmington, Delaware, United StatesRead 28 Sep 2026 · sia.storage

Apps

The Sia Storage App is available for iOS, Android, and desktop.Read 11 Oct 2026 · sia.storage

Client-side encryption

Files are encrypted on the user's device before upload, and the site says the company cannot read them.Read 11 Oct 2026 · sia.storage

Developer SDKs

The developer portal lists first-party SDKs for Rust, Go, Python, Dart, and JavaScript, with JavaScript support for Node and browsers and Dart support for Flutter.Read 11 Oct 2026 · devs.sia.storage

Device platforms

iOS,Android,desktopRead 21 Sep 2026 · sia.storage

Downloads

The site says parallel downloads from multiple hosts provide faster speeds and zero downtime.Read 11 Oct 2026 · sia.storage

File versioning

NoRead 21 Sep 2026 · sia.storage

Metadata limits

The indexer can observe approximate object sizes, registered app ownership, and object creation or access times, but cannot read plaintext data or metadata fields.Read 11 Oct 2026 · devs.sia.storage

Recovery

Users can re-derive an app key on a new device using their BIP-39 recovery phrase and the app's ID.Read 11 Oct 2026 · devs.sia.storage

Redundancy

The service distributes redundant data across independent storage hosts worldwide.Read 11 Oct 2026 · sia.storage

S3 compatibility

S3d provides an S3-compatible API that works with Rclone, Cyberduck, and other S3-compatible clients.Read 11 Oct 2026 · sia.storage

Security model

The transparency report says encrypted data flows directly between the client SDK and storage hosts, while encryption keys are derived client-side and never transmitted to Sia.Read 11 Oct 2026 · sia.storage

Self-hosting

The SDK can use a hosted, third-party, or self-hosted indexer, so developers can operate their own coordination layer.Read 11 Oct 2026 · devs.sia.storage

Storage limit

500Read 21 Sep 2026 · sia.storage

Who it serves

The developer portal describes use cases including photo backup, desktop sync, encrypted documents, media archives, user-controlled app data, and file sharing.Read 11 Oct 2026 · devs.sia.storage

Zero-knowledge encryption

YesRead 21 Sep 2026 · sia.storage

Plans and prices

Every Sia Storage plan and price →

Where Specifiction places it

• Cloud storage#30 of 668.5
• Cloud Storage Services#33 of 648.4