Mumbai Metro Line 1 has launched a new app-based rewards system called 'RapidCash' to help commuters save on travel expenses. Users can earn cashback of up to ₹20 per transaction when shopping online through popular platforms like Amazon, Flipkart, Myntra, and Ajio. The cashback is credited instantly and can be directly transferred to the commuter's bank account, making it convenient for travel or other expenses. This initiative aims to enhance affordability for regular passengers by linking their shopping activities with travel benefits. The launch of RapidCash is part of a broader push for commuter-centric innovations by Mumbai Metro One, which has previously introduced features like WhatsApp-based ticketing and QR-enabled mobile tickets. The updated app is now available on Android and iOS devices, allowing a wide range of commuters to benefit from this new feature.