OPEN SOURCE • HARDWARE KEYS ONLY

Keyper Wallet

Smart contract wallet for iPhone and StrongBox-capable Android.

Secure Enclave / StrongBox Safe Protocol 500+ Networks

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Principles

Six principles behind Keyper

Hardware-Backed Keys Only

Secure Enclave / StrongBox

Keyper only runs where private keys can be protected by dedicated hardware: iPhone Secure Enclave or Android StrongBox. Android devices without StrongBox are not supported.

Software-only mobile keys → Hardware keys only

100% Open Source

Transparency

Every line of the app, native key modules, and contract logic is public and auditable. No hidden logic, no backdoors, no trust required. Verify, don't trust.

Closed-source wallets → Fully auditable

Cross-Platform App, Native Security

React Native

React Native powers the shared wallet experience. Signing stays inside platform-native security modules: Secure Enclave on iOS, StrongBox on Android.

Web wallet signing surface → Native signing boundary

Self-Custody with EOA Escape

Self-Custody

Hardware-backed mobile keys for daily use, EOA for escape. No custody, no cloud sync. Your recovery path is user-controlled, not a third-party service.

Cloud-based recovery → User-controlled EOA recovery

Battle-Tested Contracts

Safe Ecosystem

Built on Safe smart contracts, which have secured $100B+ in assets since 2018. We use the latest audited version (1.4.1).

Unproven custom contracts → $100B+ battle-tested

500+ Networks, Same Address

One Address

Works on any EVM chain where Safe Singleton Factory (0x914d...43d7) is deployed. That's 500+ networks today, plus any future chain that deploys the factory. One address everywhere, whether you use Keyper on iPhone or a StrongBox-capable Android device.

Different address per chain → Same address everywhere

"Cold storage for savings. Keyper for spending."

Hardware Key Systems

500+

Networks

100%

Open Source

Address Everywhere