Google Play
2 guides on google play for app store optimization, from the team behind AppRankr.
Category Rank vs. Keyword Rank: What's the Difference?
An app can rank #1 in search for its exact keyword and still be nowhere in its category's top chart. Both are real signals. They just measure completely different things.
Google Play Ranking Algorithm: What We Actually Know
Google has never published its Play Store ranking formula. Here's what's actually confirmed, what's strongly inferred from testing, and what's just ASO folklore.