The ASO field, honestly
Comparison pages written to be right, not to win: openaso is the free, agent-first API for App Store ranks, keywords, reviews, charts and revenue bands — it is not enterprise market intelligence, and every page below says exactly when the paid suites are the correct answer.
When you need Sensor Tower, when you don't, and what to use instead — including a free, agent-first API for App Store ranks, keywords, reviews and charts.
Both put app-store data behind MCP for AI agents — at different layers and prices. Sensor Tower's MCP serves its paid market intelligence to subscribers; openaso is the free, agent-first ASO server.
data.ai no longer exists as a standalone product. Where each capability went after the Sensor Tower acquisition, and the free or cheaper alternatives per use case.
App Annie became data.ai in 2022 and was absorbed into Sensor Tower in 2024. What replaced each part of it, from market estimates to free rank checking.