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App Store Apps > Utilities > CO2 on Watch & Lockscreen
CO2 on Watch & Lockscreen icon

CO2 on Watch & Lockscreen

by Kevin Floch · Utilities · Free
On the App Store since January 2025 · Data updated 2026-10-29

CO2 on Watch & Lockscreen is made and published by Kevin Floch. AppBrain is an independent app data site and isn't affiliated with Kevin Floch. The app name, icon, screenshots and description belong to Kevin Floch and are shown as published on the App Store.

AppBrain's verdict

Rating on App Store
1.00
2 ratings
Last updated
March 18, 2026

It doesn't have enough ratings yet to judge what users think.

Official page on the App Store

Rankings

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Releases

Updates seen on the App Store
Version
3.0.6
Launched
January 2025

No changelog data

User feedback

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Technology

Found in the app by AppBrain
Price
Free
App size
27.8 MB
Content rating
Everyone

Technologies used by CO2 on Watch & Lockscreen

About the app and developer

About CO2 on Watch & Lockscreen

CO2 on Watch & Lockscreen is an utilities app developed by Kevin Floch.

User Ratings

CO2 on Watch & Lockscreen is rated 1.00 out of 5 stars. The rating is based on 2 ratings.

App Information

CO2 on Watch & Lockscreen is freely available from the App Store. The app size is 27.81 MB. The latest version available is 3.0.6. The last update was on March 18, 2026.

Technical Requirements

The app has a content rating of Everyone. The app has been available on the App Store since January 2025.

Developer information for Kevin Floch

Kevin Floch

Address:

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Store listing

By Kevin Floch, from the App Store
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Screenshots by Kevin Floch, from the the App Store listing
Description by Kevin Floch Written by the developer, not by AppBrain. Click to read.
Enhance your Aranet4, Airvalent or Inkbird IAM-T1 monitoring experience with an app focused on Apple Watch integration and Lock Screen widgets.
(this is a companion app focusing on Apple Watch integration and Lock Screen visibility; for the original features, please use the official apps).

KEY FEATURES:
- Apple Watch Integration: Monitor CO₂ levels directly from your wrist with multiple complication styles (including a 3hr history graph)
- Lock Screen Widgets: Keep CO₂ readings visible at all times on your iPhone
- Smart Alerts: Customizable CO₂ threshold notifications
- Background Monitoring: Continuous tracking even when the app isn't active
- Live activity: for real-time monitoring
- Color-coded Visuals: Quick understanding of air quality status

DEVICE COMPATIBILITY:
- Works with Aranet4, Airvalent and Inkbird IAM-T1 devices.

The app is free to test and connect to your device, with in-app purchases available for premium features.

This app is licensed under the standard Apple EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Official page on the App Store
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