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The original was posted on /r/selfhosted by /u/voximodo on 2025-03-25 08:58:59+00:00.
Hi! I've developed an app called that functions as a digital dead man's switch, allowing users to prepare messages that are delivered to loved ones only after they pass away (or more technically, after they stop checking in). I originally built this as a commercial app but haven't found enough customers to make it viable, so I'm considering open-sourcing it.
Core functionality:
- Prepare encrypted messages for your close ones that are only delivered after you stop checking in
- Regular check-in system (press a button to confirm you're still around)
- Escalating notification system before message delivery
- End-to-end encryption for all messages
- No verification of actual death - purely based on missed check-ins
Technical details:
- Currently built for Android and iOS using Jetpack Compose Multiplatform
- Uses AES-GCM encryption with PBKDF2 key derivation
- Already has an open-source website component for decryption (on GitHub)
- Server component for message storage and delivery
And I wanted to ask you - would this be something that someone would be interested in using?
This isn't a small project to convert to self-hosted, so I want to gauge interest before investing the time. If there's enough community interest, I'll start working on the open-source version.
Thanks for your feedback!