CO2-Timer is a free lifestyle app developed by Garage51 for Android. The app is designed to help you understand the importance of good room ventilation and the advantages that come with it. With this app, you can calculate the CO2 concentration in a room by entering relevant data such as the number of people, length of stay, floor space, and room height. The app then calculates when and how you should ventilate, and you can activate a timer to remind you when it's time to do so.

CO2-Timer provides background knowledge and information on all aspects of room ventilation. It explains the basics of the calculation and values used for it. All entered data is stored exclusively on your smartphone.

The app is well-designed, user-friendly, and easy to navigate, making it accessible to everyone. It is an excellent tool for anyone who wants to ensure that they are breathing clean air. Download CO2-Timer for free today and take the first step towards a healthier and safer environment.