Sia Storage
Sia Storage offers encrypted, decentralized cloud storage with a free tier starting at 50 GB.
What Sia Storage is
Sia Storage offers encrypted, decentralized cloud storage with a free tier starting at 50 GB. Files are encrypted on the user’s device before upload, and the service says it cannot read them. Redundant data is distributed across independent storage hosts worldwide, while parallel downloads use multiple hosts. The Sia Storage App is available for iOS, Android, and desktop, and listed platforms also include Linux, macOS, Windows, API, and self-hosted use. S3d provides an S3-compatible API for Rclone, Cyberduck, and other compatible clients. First-party SDKs are listed for Rust, Go, Python, Dart, and JavaScript, with Node, browser, and Flutter support. Developers can use a hosted, third-party, or self-hosted indexer. Plans include Free at no cost, Plus at $7.99 a month, Pro at $14.99 a month, and Unlimited at $19.99 a month. File versioning is not available.
Good
- Client-side encryption before upload
- Redundant storage across worldwide hosts
- Free 50 GB tier
- S3-compatible API and developer SDKs
- Apps for iOS, Android, and desktop
Watch out
- File versioning is unavailable
- Indexer can observe approximate object sizes
- Storage plans limit app counts
Who it suits
It suits people and developers seeking encrypted storage, decentralized hosting, device backups, synchronization, archives, or file sharing. Self-hosting and SDK options also target teams building user-controlled app data.
Verdict
Sia Storage combines client-side encryption, distributed redundancy, and broad developer access. Its free and paid tiers provide clear capacity choices, while the lack of file versioning and visible indexer metadata are important considerations.
Plans and prices
From Sia Storage's own pricing page, checked 11 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Free | Free | 50 GB storage · 3 apps · 500 Mbps |
| Plus | $7.99 a month | 500 GB storage · 3 apps · 500 Mbps · $7.99/mo |
| Pro | $14.99 a month | 5 TB storage · 5 apps · 1 Gbps · $14.99/mo |
| Unlimited | $19.99 a month | 10 TB storage · $4.99/TB-mo over · 100 apps · 5 Gbps · $19.99/mo |
The facts
Each one read from Sia Storage's own pages, with the date it was checked.
Where it runs
- Apps
- The Sia Storage App is available for iOS, Android, and desktop.checked 11 Oct 2026
- Device platforms
- iOS,Android,desktopchecked 21 Sep 2026
What it does
- Client-side encryption
- Files are encrypted on the user's device before upload, and the site says the company cannot read them.checked 11 Oct 2026
- 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.checked 11 Oct 2026
- Downloads
- The site says parallel downloads from multiple hosts provide faster speeds and zero downtime.checked 11 Oct 2026
- File versioning
- Nochecked 21 Sep 2026
- 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.checked 11 Oct 2026
- Recovery
- Users can re-derive an app key on a new device using their BIP-39 recovery phrase and the app's ID.checked 11 Oct 2026
- Redundancy
- The service distributes redundant data across independent storage hosts worldwide.checked 11 Oct 2026
- S3 compatibility
- S3d provides an S3-compatible API that works with Rclone, Cyberduck, and other S3-compatible clients.checked 11 Oct 2026
- 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.checked 11 Oct 2026
- Self-hosting
- The SDK can use a hosted, third-party, or self-hosted indexer, so developers can operate their own coordination layer.checked 11 Oct 2026
- Storage limit
- 500checked 21 Sep 2026
- Support
- Sia Storage lists its Discord community and email as support channels.checked 11 Oct 2026
- What it does
- Sia Storage offers encrypted, decentralized cloud storage with a free tier starting at 50 GB.checked 11 Oct 2026
- 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.checked 11 Oct 2026
- Zero-knowledge encryption
- Yeschecked 21 Sep 2026
Money
- Free plan
- Yeschecked 21 Sep 2026
The company
- Headquarters
- Wilmington, Delaware, United Stateschecked 28 Sep 2026
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