YOUR SECRETS.
YOUR DEVICE.
MASTRpass is an encrypted offline vault for passwords, recovery phrases, TOTP and secure notes. No account, backend, cloud or telemetry.
MASTRpass ON YOUR DEVICES.
Only locally verified releases and clearly labelled development builds. No app-store copy, no mirror.
MASTRpass Pro · Seeker
Free in Solana Mobile dApp StoreDownload MASTRpass Pro for free from the Solana Mobile dApp Store on Seeker.
- Encrypted local vault for passwords, recovery phrases, TOTP and notes
- Offline checks for URLs, QR codes, wallet addresses, signatures and files
- Free download for Solana Seeker users
iOS / iPadOS
Preparing for submissionThe iPhone and iPad edition is going through final checks before App Store submission.
- Encrypted vault and offline tools
- Local biometric access
- Final signing and device tests
Android · Google Play
Preparing for submissionThe general Android edition is being prepared for Google Play submission.
- Android edition outside the Seeker store
- Offline vault and security tools
- Final store package and checks
Windows
In developmentThe Windows edition is still being developed and tested.
- Local vault and Security Center
- Encrypted backups and recovery
- Windows Hello and signing work
OFFLINE VAULT. LOCAL SECURITY TOOLS.
Passwords, recovery phrases, TOTP, secure notes and local security tools in one encrypted offline vault.
Vault
Secrets stay secretPasswords, recovery phrases, secure notes, TOTP, recovery codes and encrypted attachments in one local vault.
Offline
No server in betweenNo account, backend, cloud or telemetry. Android does not even hold the INTERNET permission.
Recovery
Back up before it mattersEncrypted exports, integrity checks, recovery tests and multiple local backup generations.
Analysis
Offline toolsLocal URL, QR, address, signature, certificate, transaction and file inspectors with explicit limits.
Protection
Quick or StrictMaster password and recovery key for manual access, optionally followed by biometrics or Windows Hello.
Platforms
One shared coreNative apps with a shared Rust cryptography core and a compatible encrypted vault format.
LOCAL BY DESIGN. CLEAR ABOUT LIMITS.
MASTRpass encrypts vault data on your device. There is no MASTRpass account, cloud sync or telemetry.
MASTRpass is not externally audited. Never use it as your only backup or as sole protection for high-value wallets.
COMMON QUESTIONS. STRAIGHT ANSWERS.
What you should know before storing real secrets.
Does MASTRpass connect to the internet?
No. The apps have no backend, telemetry or WebView. Android has no INTERNET permission; Windows and iOS use no network API.
Where is my data stored?
Only on your device in the private app area, protected with authenticated encryption. Exports are created when you choose to make one.
What if I lose the password or recovery key?
There is no backdoor or support access. Manual recovery requires the master password and the complete recovery key.
Has MASTRpass been externally audited?
No. MASTRpass has not been externally audited. Never use it as your only backup.
Does MASTRpass replace a hardware wallet?
No. MASTRpass stores secrets and provides local inspection tools, but it does not sign or broadcast blockchain transactions.
Are vaults cross-platform?
The encrypted vault format is compatible. Biometrics or Windows Hello must be set up again on a new device.
Are all downloads signed?
The Seeker edition is distributed through the Solana Mobile dApp Store. Future platform releases will show their signing status when they are published.
How do I report a vulnerability?
Send reproducible technical details to info@mastrapps.com or contact @MASTRlabs. Never attach seed phrases, recovery keys, vault files or keystores.