SpaceBox Lite is live today. It is a free app that turns any phone or tablet into a SpaceBox: a private inbox that can receive files, sealed on the sender's own device, from anyone you invite. No account to create, no card, no email. Below is a quick tour of what ships in the free beta and how it stays private by design.
What it actually does
Most "secure sharing" tools ask everyone to sign up, then encrypt files to accounts the provider hosts. SpaceBox Lite flips that around. You install the app, and your device becomes the destination. You invite a sender with a QR code or a link, and they can drop files straight to you. Each file is encrypted before it leaves their device, and only your device can open it.
Two shapes come out of the same model: a personal vault that syncs across your own devices, and an organisation inbox where a team receives drops in one place.
Senders stay anonymous
A person sending you a file does not create an account and hands over no personal data. They are identified only by a pseudonymous id derived from a cryptographic key, not from a name, a phone number or an email. There is nothing to phish and no contact list to leak, because there is no directory of users in the first place.
Encrypted on the device, before upload
Every drop is sealed locally. A random content key encrypts the file with AES-256-GCM, and that content key is wrapped to your public key using ML-KEM-768, the post-quantum key exchange standardised by NIST as FIPS 203. Your private key is generated on your device and never leaves it. We store ciphertext and nothing else, so there is no readable copy of your files anywhere but on your own hardware.
No password to lose
There is no password. To prove who you are, the server wraps a random secret to your public key, and only your device can unwrap it. Nothing to reuse, nothing to phish, and no shared secret ever travels over the wire.
What is free, and what comes next
On install you get 1 MB of storage free, enough to run the whole flow end to end, with no card and no email. Claim a free voucher at beta.i46.space for an additional 100 MB and 100 files (an email address is required there to prevent abuse). Two-way sharing, ownership transfer, a dead-man's-switch and a 24-word recovery phrase arrive with SpaceBox Ground, and storage in orbit follows with SpaceBox aboard CERVSAT-2 in March 2027.
One note on availability: during the beta, SpaceBox Lite is not offered to residents of the EU and EEA. See the Terms for the detail.
Your device becomes the vault : we only ever hold the locked box, never the key.
Get it now
Download the app and try it end-to-end in under two minutes at i46.space. Everything above works on the free tier.
SpaceBox is i46's sovereign data storage platform. Read more about the full stack : on-prem, Panama and orbital tiers, plus the ESA-backed launch aboard CERVSAT-2 : on the SpaceBox page.