Klima-Taler
App by Berlin greentech Blacksquared. Every 5 kg of CO2 saved (via cycling, transit, energy-saving) earns one digital Klima-Taler redeemable at participating local retailers. In 2024 the city of Leer in East Frisia saved 291.3 tons of CO2 and topped the national ranking, with 54 partner shops and 10,000+ redeemed Talers.
National city-vs-city leaderboard ranks all participating municipalities by total CO2 saved. Marketing explicitly frames it as 'your citizens enter into a playful competition' with other cities. Separate ranking for participating schools across the network. Press coverage celebrates winning towns (Leer's 2024 victory).
Within each city, residents join their 'city team' and contribute to the municipal total. Local retailers fund the rewards, creating shopkeeper-citizen alliances. Schools have a parallel sub-leaderboard. Civic pride mechanic: 'help Leer beat Wolfenbüttel.'
Rare example of a real local-currency loop tied to inter-city competition. The Talers are redeemable at neighborhood shops, so the gamification routes value back into the local economy. Strong model for BelongHub catalog of community-economic-loop tools.
Others in the same family
STADTRADELN (City Cycling)
21-day national bicycle-kilometer competition organized by Klima-Bündnis (Climate Alliance). Over 1.2 million participants in 2024-2025. Citizens log kilometers via app or website; municipalities and councils form teams.
BetterPoints
Council-funded mobile app that auto-detects walking, cycling, bus, train, car-share trips and converts to BetterPoints redeemable at local retailers. Councils customize challenges per borough.
Klima-Taler
City-branded climate app powered by motiontag that auto-detects walking/cycling/public-transport trips and converts CO2 saved into 'Klima-Taler' coins redeemable at local pools, museums, shops. Each participating city gets its own white-label instance; users join open teams.
STADTRADELN (CITY CYCLING)
Run by Klima-Buendnis (Climate Alliance), 1.2m+ Germans log kilometres cycled over a self-chosen 21 consecutive days between May-September. Although billed as a climate campaign, it doubles as a population-level physical-activity intervention - municipalities sign up officially and their citizens, employers, schools and local councillors form teams. Stuttgart 2026: 8,809 participants, 1.8m km.
Beat the Street (Intelligent Health)
Physical 'Beat Box' RFID sensors mounted on lampposts across a town. Walkers/cyclists/wheelers tap them with a card or phone app to earn points for themselves and their team. Each deployment is town-wide and time-boxed (~6 weeks). 5,000+ schools have participated; reached 2 million people in 200+ places.
2zero Klimathon (Mannheim, Glienicke, Hufeisen-Region, Schleswig-Holstein)
6-week 'Klimathon' run by Berlin-based 2zero (formerly Klimakompass). Each week features 4-6 challenges across themes (mobility, food, energy, consumption, digital, leisure). Mannheim ran as a CoLAB pilot under the EU '100 climate-neutral cities by 2030' Mission starting Jan 2025.