Bitkey App works as a pure Bitcoin wallet and focus on best key management practice.
BitKey-Multisig-Tool on Mac is a cosign tool, and the cosign-keys can be totally airgap and safe.

1. BitKey App for iPhone


Compatibility:
- iPhone, iPad.
- Systerm newer than iOS 10.

Cryptocurrencies:
- Bitcoin only.

Download:
- Appstore

2. BitKey-Multisig-Tool on Mac


Compatibility:
- Mac
- macOS 10 or newer systerm.

Download:
- Download From Github