The problem Sustrain solves

Our compost tracker Dapp utilizing an Ethereum-based Web3 push protocol can send real-time updates on compost status, provide reminders for optimal composting, track environmental impact, and offer incentives for composting milestones. It can also connect users with local composting events and offer personalized recommendations for better composting.

Challenges we ran into

The Dart Support for Push protocol is Scarce and even the Dart SDK is still under development.
The learning curve was less convenient for mobile development than the web.