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2026 · Live

Sleepy Whisper

A baby monitor that works without the internet

Role
Product, Design, Engineering
Built with
Android, iOS (viewer), WebRTC, Local HTTP server
Android
Google Play
iPhone
App Store

Most baby monitors come with a camera, an account and a company server in the middle. The server is the weak spot. It can be hacked, it stops working when your internet goes down, and it puts video of your baby’s room on somebody else’s computer.

The idea

Most households already have two phones. If one of them can host the connection itself, you don’t need the server at all. No hub to buy, no account to make.

What we built

The phone by the cot runs a small server and streams video straight to your other phone over your home Wi-Fi. A phone hotspot works too, which helps during a brownout. To pair them you get an address, a code that changes every few minutes, and a QR code with both in it. You can watch from the Sleepy Whisper app on Android or iPhone, or from any browser. No spare phone? It can show a Wi-Fi camera instead.

The nursery screen goes dark so it doesn’t light up the room. Noise and motion alerts show you the room’s actual level, so you can set the threshold by looking at it. The volume goes past 100%, because sometimes you need to hear very quiet breathing.

What it isn’t

Sleepy Whisper is not a medical device. It doesn’t track breathing or vital signs. It shows you the room and lets you hear it. The app says so on one of its own screens.

The app today

Screens from the current build

Have a go

Running right here

Nursery phone

http://192.168.1.14:8080

Access code

482 019

In the app this changes every 5 minutes. We sped it up to 10 seconds so you can watch it.

Type that address into any browser on your own phone. There is nothing to install on the second one.

  • 0 accounts
  • 0 servers in the path
  • 2 phones, paired before either can watch

A neighbour on your Wi-Fi cannot open your nursery. The phones have to be paired first, and by now the code above has already changed.

Impact

The video goes straight from the nursery to you. There's no server in between.

  • 0Accounts to sign up for
  • 0Servers in between

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