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About this app

Teams of colleagues compete against each other in everyday office life for three weeks to save CO2. The teams collect points by completing tasks in the areas of mobility, nutrition and resources, thereby unlocking green donations and rewards.
The CO2 saving competition runs via the KlimaKarl app. Employees of a participating company receive a personal access code for registration. KlimaKarl leads through the competition: First, he motivates in a humorous way with tips and information. Secondly, a short entry in the chat is sufficient to document the completed tasks. KlimaKarl automatically calculates the CO2 savings and credits points.
In the team for the (operational) climate
Updated on
Nov 4, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
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  • No data collected
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What’s new

Fehlerbehebungen und Verbesserungen
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App support

Phone number
+4917661335522
About the developer
Sustainable Change Labs UG (haftungsbeschränkt)
hendrik@klimakarl.de
Eumeniusstr. 1 50679 Köln Germany
+49 176 61335522