Can I use an offline phone as cold storage instead of a hardware wallet?

This page summarizes the projects mentioned and recommended in the original post on /r/BitcoinBeginners

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  • airgap-vault

    The AirGap Vault is installed on a spare smartphone that has no connection to any network, thus it is air gapped. This app handles the private key.

    The project is completely open source and free. Our app is also reproducible, however, due to some recent issues where builds were randomly not reproducible, the status on walletscrutiny is currently "not reproducible" (if you read the analysis, it will state that the latest version is in fact reproducible, but until mentioned issue is addressed, it will stay "not reproducible"). We're working with walletscrutiny to resolve this and it looks like we have resolved the issue with the latest release, but it will take some time to verify it. (see https://github.com/airgap-it/airgap-vault/issues/127).

  • bitbox02-firmware

    Firmware code of the BitBox02 hardware wallet

  • WorkOS

    The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.

NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.

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