Sweatcoin makes movement economically legible: eligible steps convert into a proprietary currency that users spend in a marketplace of partner rewards, with challenges and badges layered around the core walk-and-earn loop.
Reward redemption is far more central here than in ordinary fitness trackers. The pitch is not self-improvement bookkeeping but an exchange rate for effort, which makes the perceived value of the marketplace the emotional core of the product: when the catalogue feels worthwhile, walking feels paid; when it does not, the loop deflates.
The design lesson: tie rewards to real-world value and you inherit a real economy. Supply, desirability, and exchange rates become product-design surfaces, and user satisfaction rides on how well they are managed.
