Start with an invitation
No account to create. A one-time code activates your device for the private beta.
Invite only · Android beta
Make room for a simpler connection.
TAVI gives your Android phone an encrypted connection through a private server. Activate with an invitation, then connect with one tap.
0.2.4 rollout in progress. The download button may still serve the previous APK until the server update finishes. Wait for confirmation before activating a new device.
The idea
The essentials, kept simple.
A small Android app with a straightforward way to connect and disconnect. Access is given personally by invitation.
Connect in one tap
Turn the connection on or off in the app. Android asks for your permission before the VPN starts.
Your key stays on your phone
The app creates your private key on the device and stores it in encrypted local storage. The server receives only your public key.
Getting started
Three steps to your first connection.
You need an Android phone and an invitation from the person who gave you access.
- 01 / GET THE APP
Download the APK
Tap the download button on this page. The APK file will download to your Android phone.
- 02 / ACTIVATE
Read, agree, and activate
Open the APK on Android 8 or newer. Read the Terms and Privacy Notice, check the consent box, enter the invitation code, and tap Activate. Android then requests precise and background location separately. Monitoring begins when activation succeeds, including while the VPN is off. The code lasts 30 minutes; access lasts 30 days.
- 03 / CONNECT
Tap Connect
Approve Android’s VPN request. The app shows when a fresh handshake with the server is available.
Ready to install TAVI?
Download APK Download the Android beta directly to your phone, then open the file to install it. Access to the connection still requires a personal invitation code.
Your data
Know what this beta records.
Continuous monitoring is a condition of this private test. Read the complete Privacy Notice and Terms of Use before activating.
Location and networks
With Android permission, TAVI sends precise coordinates, accuracy and network changes even when the VPN is off or the screen is locked. Wi-Fi names and access point addresses may be included.
Traffic metadata
The server records destination IPs and ports, DNS queries, visible TLS host names and unencrypted HTTP paths. It does not store raw packets or encrypted HTTPS content.
Retention and access
Diagnostics older than 24 hours are removed from the live database by its cleanup job. Activation and access records have longer retention. The diagnostics page is protected by an owner key; exported files need separate deletion.
Your choice
You can stop monitoring from the Android notification or revoke location access in settings. TAVI pauses VPN participation until you accept again. Ask your inviter to revoke the device.
Good to know
Before you begin.
Can I use TAVI on iPhone?
Not yet. This beta is for Android 8 and newer.
What if my connection drops?
Android can block traffic outside the VPN. Turn on “Always-on VPN” and “Block connections without VPN” for TAVI in Android settings if you want this protection.
Does TAVI make me anonymous?
No anonymity guarantee. It routes traffic through the private server; websites and other services can still identify you in other ways.
How do I stop using it?
Stop monitoring from the persistent notification or revoke location permission in Android settings. The VPN then stops too. Ask the person who invited you to revoke device access.