RefundHalt helps app makers keep revenue from unfair refunds. When a customer asks the app store for a refund or files a chargeback, the service replies with evidence of how the app was actually used.
It covers both Apple and Google Play, and needs no SDK, with a short setup. The site reports that it has helped turn down a large share of refund requests. It suits developers, including Pakistani indie studios, who sell subscriptions or in-app purchases.