I hate the idea of AppGratis and I'm glad its been removed. Who really benefits? The cheap user who will not normally pay for a high quality app? The app developer who spends $$ to get featured in AppGratis to then artificially climb the app store ranking? Dls are one of the worst vanity metrics out there. Devs should focus on building high quality products, monetize, then acquire quality users in a sustainable manne…
A game of ours have been featured by AppGratis twice. They blow our charts what was then followed by a reasonable amount of paid players. That made a _huge_ difference for us. 2.5 months after the deal, there are still more downloads than was after 2 weeks of the release.
If you are a small team with very very limited resources. AppGratis is a really good way to get exposure this way. Would happily recommend them.
BTW, you can use other services to climb up the charts, like Chartboost or FB ads and I don't think any of them is any better or worst than the paid service of AppGratis.
Building great apps is hard. So is their marketing.