Shamir Backup splits your cryptocurrency seed phrase into multiple shares so that no single share reveals your secret
Shamir Backup splits your cryptocurrency seed phrase into multiple shares so that no single share reveals your secret. Only a minimum number of shares (threshold) is needed to recover the original phrase. HOW IT WORKS Shamir's Secret Sharing is a proven cryptographic scheme used by security professionals worldwide. You choose how many shares to create (e.g. 5) and how many are needed to recover (e.g. 3). Any combination of 3 shares will restore your seed phrase — but 2 or fewer reveal absolutely nothing. SPLIT • Enter your seed phrase • Choose total shares (2–16) and recovery threshold • Generate shares instantly • Select, copy, or share individual shares via AirDrop, Messages, or any sharing method RECOVER • Paste the required number of shares • Instantly reconstruct your original seed phrase • Copy the recovered phrase with one tap SECURITY FIRST • 100% offline — no internet connection, no servers, no cloud • No third-party libraries — cryptography implemented from scratch • Sensitive data is automatically cleared when you leave the app • Clipboard is cleared on app termination • No analytics, no tracking, no data collection PAID ONCE, YOURS FOREVER • No subscriptions, no in-app purchases, no trial limits • All features available immediately • No ads, ever WORKS EVERYWHERE • iPhone, iPad, and Mac (Apple Silicon) • Adaptive interface — tabs on iPhone, two-column layout on iPad and Mac • Full Dark Mode support BUILT ON PROVEN MATH • Galois Field GF(256) arithmetic with AES polynomial • Lagrange interpolation for share reconstruction • Industry-standard scheme used by hardware wallets and exchanges Perfect for cryptocurrency holders who want to distribute their seed phrase backup across multiple secure locations — a safe deposit box, a trusted family member, a fireproof safe — knowing that no single location compromises their funds.
| # | Name | Price | Currency | Region |
|---|---|---|---|---|
| 1 | Item | ¥ 148 | CNY | 中国 |
