Sia review
Updated October 12, 2026 · ShieldCue Editorial Team
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Our verdict
For people seeking decentralized storage, Sia is an encrypted cloud network that divides files into small encrypted pieces for distribution across independent hosts. Storage enthusiasts, data ownership champions and commercial platforms use its open source ecosystem with mobile access on iOS and Android.
Key facts
- Best for
- People wanting decentralized encrypted file storage
- Official website
- sia.tech
Apps and profiles
- Get the app
- Google Play
Pros and cons
Pros
- Splits files into tiny encrypted fragments for dispersal across many independent hosts.
- Operates as an open source ecosystem sustained by community donations.
- Offers mobile app for iOS and Android with sharing and media streaming support.
- Has no central access point or gatekeepers and avoids expensive hardware requirements.
Cons
- Uses a distributed host network instead of centrally managed storage infrastructure.
- Support flows through community channels tied to its open source donation sustained model.
Who it suits
- Data ownership champions seeking control
- Storage enthusiasts exploring decentralized networks
Who should look elsewhere
- People wanting centrally managed cloud storage
How Sia compares
Frequently asked questions
How does Sia protect stored files?+
Sia stores data without seeing its contents and breaks each file into small encrypted pieces. Those pieces are scrambled and spread over independent hosts on the network. Layered defenses make improper access impossible or extremely improbable.
Who maintains the Sia project?+
Sia operates as an open source project sustained by community donations. It works for the public good without profit motives shaping its direction. Grants support continued growth and joint development across the storage ecosystem in 2026.
What apps and tools work with Sia?+
Sia provides a mobile storage app for iOS and Android with encrypted file sharing. The app also supports media streaming from decentralized storage. Related ecosystem tools cover host scoring, network statistics and compatible storage connections.
Not confirmed yet: Free storage, Price per TB per year, Zero-knowledge encryption.