Get HouseExhale on your phone

The app is where you measure: it walks you through setting up the monitor, reminds you at bedtime, and turns each night into one number. Free on iPhone and Android.

Use it in Safari Get it onGoogle Play

iPhone

Aranet4 pairs once on iPhone or Android, and the app reads each night from its memory. With any other true CO₂ monitor, you type the night’s high each morning or import its CSV.

Use it in Safari

Tap Download on the App Store, then Get.
Open HouseExhale with your monitor nearby and tap Find my monitor.
Allow Bluetooth and notifications when the app explains why. Choose the bedroom and your bedtime, and tonight is night one.

Android

Works on Android 7 and newer. Connects to an Aranet4, SwitchBot Meter Pro CO₂, Qingping or INKBIRD monitor over Bluetooth, so nights can record themselves.

Get it onGoogle Play

Tap Get it on Google Play, then Install.
Open HouseExhale with your monitor nearby and tap Find my monitor. Android asks only for Nearby devices, not your location.
Choose the bedroom and your bedtime. With a SwitchBot, Qingping or INKBIRD, leave the phone in the bedroom overnight.

In a browser

The web version is the same app without Bluetooth: you type one number each morning, and reminders go to your calendar. Handy on a tablet or a work computer.

Use it in your browser

On a computer?

Point your phone’s camera at the code. This page opens there with the right store for your phone.

What you’ll need

A CO₂ monitorAny true (NDIR) CO₂ monitor. Which ones work.
About ten minutesFor power, placement and your bedtime and wake times.
Two or three normal nightsYour first answer comes after the second.

Which monitors connect

Aranet4 pairs once on iPhone or Android, and the app reads each night from its memory.
SwitchBot, Qingping and INKBIRD monitors record overnight on an Android phone. On iPhone, type the night’s high each morning or import the monitor’s CSV.
Any other true (NDIR) CO₂ monitor works on either phone: type one number each morning, or import a CSV.