About this app
GreenCoin is an incentive-based programme at PolyU designed to promote campus-wide sustainability and recognize your efforts in making decarbonization impacts. By participating in selected sustainability activities and waste reduction actions, you can earn Coins through your mobile device. These Coins can then be redeemed for a variety of gifts and e-coupons, which are valid at various campus facilities. Join GreenCoin to make a difference and enjoy exclusive rewards for your sustainable actions!
Latest release
What’s New
Bug Fixes
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Aug 28, 2026 · 6:29 PM Free
Screenshots
