Notification bridge for Kompakt via Raspberry Pi + iPhone (EU Notification Forwarding)

Mudita Products
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Hi everyone,

Like many of you, I use the Kompakt as my primary daily phone and keep my iPhone at home or in my bag for apps I can’t avoid yet (WhatsApp, Signal, etc.).

The problem we all share: missing important messages from key contacts because they come through apps that don’t work well sideloaded on Kompakt.

I’ve been working on a small project called Ruptur: an open-source notification bridge that works like this:

  1. iPhone (with iOS 26.3+) forwards notifications via the new EU Notification Forwarding feature (or ANCS via Bluetooth) to a Raspberry Pi at home
  2. The Pi filters notifications: only contacts and apps you choose
  3. The Pi pushes a minimal alert to a lightweight app on your Kompakt (vibration + sender name + short preview)

No need to sideload WhatsApp or Signal on the Kompakt. No Google Services dependency. No battery drain from apps running in background. The Kompakt stays minimal, and it just gets a tap on the shoulder when something actually matters.

The stack would be:

  • Raspberry Pi (any model with BLE/WiFi) as the hub
  • A small sideloaded app on Kompakt as the client
  • iPhone stays in your pocket or at home, doing the heavy lifting

I’m building this for myself first, but I want to gauge if this resonates with the community before investing time in making it usable for others.

A few questions:

  • Would you use something like this?
  • What notifications would be essential for you? (WhatsApp, Signal, calls, email?)
  • Do you have a Raspberry Pi or similar device at home already?
  • Would you prefer this as a sideloadable APK or would you want Mudita to integrate something like this natively?

I’ll share progress on GitHub once I have a working prototype. Happy to hear your thoughts.

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Wow, I like the idea. Sounds like an inbox for other devices’ notifications. Kudos!

I’d be interested in trying it out but I do already have WhatsApp and Signal sideloaded (and I struggle whether to keep it or not). I’d use it probably for acknowledging e-mails or Teams messages. But that would work as long as I keep a data-only SIM card in the smartphone, I intend to ditch it eventually as I think I pay a bit too much for all the phones in my household now.

I don’t have R. Pi. Could I use any server entity in a network as a hub? What’s specific about Raspberry Pi?

Separate .apk, consider the other thread about Calm Apps appstore.

Good luck!

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