What's the best Android app for earning small rewards just by walking daily?

Sweatcoin・Walking Step Counter is an incentive-based fitness app designed to reward users for walking. By tracking outdoor steps via GPS and converting them into Sweatcoins, the app creates a gamified system where physical activity translates into potential benefits. Users can accumulate these coins and spend them in a marketplace featuring discounts on brands, fitness gear, or charitable donations. For instance, someone aiming to walk 10,000 steps a day might find the promise of earning coins for a free coffee voucher adds extra encouragement. The interface is generally praised for being intuitive, with seamless installation and clean design that appeals to both new and long-term users. However, reviews indicate persistent issues with step counting accuracy, particularly during 'boost' periods that multiply earnings, and recent updates have introduced bugs with video ads required for activating rewards. Some users report having to watch ads multiple times, which can frustrate the experience. Despite these flaws, the core concept remains effective for those seeking external motivation. It's particularly useful for casual walkers looking to monetize their routine without investing in additional hardware, though heavy reliance on ad interactions may deter some.