Sia Storage
by Sia Storage
What Sia Storage is
Sia Storage offers encrypted, decentralized cloud storage with a free tier starting at 50 GB. Files are encrypted on your 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 for speed and zero downtime. Apps are available for iOS, Android, and desktop, with additional Linux, macOS, Windows, API, and self-hosted support listed. S3d provides an S3-compatible API for Rclone, Cyberduck, and other compatible clients. First-party SDKs cover Rust, Go, Python, Dart, and JavaScript, and developers can use hosted, third-party, or self-hosted indexers. The security model keeps encryption keys client-side. Plans include Free, Plus at $7.99 a month, Pro at $14.99 a month, and Unlimited at $19.99 a month. File versioning is unavailable.
Who it suits
It suits people seeking encrypted storage for backups, sync, documents, archives, app data, or file sharing. Developers may value its S3 API, SDKs, and self-hosting options.
What it does well
- Free tier starts with 50 GB
- Client-side encryption keeps keys off Sia
- Redundant storage spans independent hosts
- Supports iOS, Android, and desktop
- Offers S3-compatible API and SDKs
What to know first
- File versioning is unavailable
- Higher capacities require paid plans
- Indexer can observe object sizes and access times
Limits
The Free plan includes 50 GB, 3 apps, and 500 Mbps. Plus includes 500 GB, 3 apps, and 500 Mbps; Pro includes 5 TB, 5 apps, and 1 Gbps; Unlimited includes 10 TB, 100 apps, and 5 Gbps, with $4.99/TB-mo over its allowance.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Free | 50 GB storage · 3 apps · 500 Mbps | Free |
| Plus | $7.99/mo · 500 GB storage · 3 apps · 500 Mbps | $7.99 a month |
| Pro | $14.99/mo · 5 TB storage · 5 apps · 1 Gbps | $14.99 a month |
| Unlimited | $19.99/mo · 10 TB storage · $4.99/TB-mo over · 100 apps · 5 Gbps | $19.99 a month |
As sia.storage lists them, read 11 Oct 2026. The maker's own page has the final word.
Getting started
- Open the Sia Storage website
- Choose the Free, Plus, Pro, or Unlimited plan
- Install the app for iOS, Android, or desktop
- Use S3d with an S3-compatible client such as Rclone or Cyberduck
- For development, select a hosted, third-party, or self-hosted indexer
Verdict
Sia Storage combines client-side encryption with decentralized storage and broad developer access. Its free and paid plans cover personal and application-oriented use, while metadata visibility and no versioning remain considerations.
Questions
Is there a free plan?
Yes. Free provides 50 GB, 3 apps, and 500 Mbps at no charge.
What does Plus cost?
Plus costs $7.99 a month and includes 500 GB, 3 apps, and 500 Mbps.
Which devices are supported?
Apps are available for iOS, Android, and desktop. Listed platforms also include Windows, macOS, and Linux.
Does Sia Storage use zero-knowledge encryption?
Yes. Files are encrypted on your device, and encryption keys are derived client-side and never transmitted to Sia.
Can developers use an S3 interface?
Yes. S3d provides an S3-compatible API that works with Rclone, Cyberduck, and other compatible clients.
Can storage be self-hosted?
The SDK can use a hosted, third-party, or self-hosted indexer, allowing developers to operate their own coordination layer.
Facts from Sia Storage's own pages
- Apps
- The Sia Storage App is available for iOS, Android, and desktop. · sia.storage, 11 Oct 2026
- Client-side encryption
- Files are encrypted on the user's device before upload, and the site says the company cannot read them. · sia.storage, 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. · devs.sia.storage, 11 Oct 2026
- Device platforms
- iOS,Android,desktop · sia.storage, 21 Sept 2026
- Downloads
- The site says parallel downloads from multiple hosts provide faster speeds and zero downtime. · sia.storage, 11 Oct 2026
- File versioning
- No · sia.storage, 21 Sept 2026
- Free plan
- Yes · sia.storage, 21 Sept 2026
- Headquarters
- Wilmington, Delaware, United States · sia.storage, 28 Sept 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. · devs.sia.storage, 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. · devs.sia.storage, 11 Oct 2026
- Redundancy
- The service distributes redundant data across independent storage hosts worldwide. · sia.storage, 11 Oct 2026
- S3 compatibility
- S3d provides an S3-compatible API that works with Rclone, Cyberduck, and other S3-compatible clients. · sia.storage, 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. · sia.storage, 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. · devs.sia.storage, 11 Oct 2026
- Storage limit
- 500 · sia.storage, 21 Sept 2026
- Support
- Sia Storage lists its Discord community and email as support channels. · sia.storage, 11 Oct 2026
- What it does
- Sia Storage offers encrypted, decentralized cloud storage with a free tier starting at 50 GB. · sia.storage, 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. · devs.sia.storage, 11 Oct 2026
- Zero-knowledge encryption
- Yes · sia.storage, 21 Sept 2026
Where Sia Storage stands on Freedom251
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