Data
Reports on apps, platforms and markets: users, revenue, downloads and market share.
Browse dataGuides
How-to guides on App Store Optimization, user acquisition, engagement and monetization.
Browse guidesTools & Vendors
Comparisons of the tools and agencies app teams use to grow.
Browse tools & vendorsThere is also a glossary of app marketing terms and a small set of case studies.
Who's behind Priori Data
Priori Data is run by Sunil Gill, who is responsible for everything published here.
Sunil Gill
Digital marketing & app growth
A digital entrepreneur with over 9 years of experience in digital marketing. Over the years, I have developed a strong passion for app marketing and love to create engaging and informative content around it.
How the numbers are sourced
Company figures come from the company.
Earnings releases, shareholder letters and regulatory filings, in the currency the company reports.
Estimates are labelled as estimates.
Numbers from analytics firms are attributed to the firm that produced them.
Every figure carries its period.
A number without a date is not much use, so each one says what it covers.
Corrections are welcome.
If a figure is wrong or out of date, tell us and we will fix it.
Reports published from October 2026 follow these rules in full. Older reports are being reviewed and brought up to the same standard.
The name and its history
A priori is a term from statistics: what you assume about something before you have seen the data. Priori Data is about what comes next, which is looking at the data.
The name was first used by a Berlin company founded in 2013 that sold app store intelligence, meaning download and revenue estimates for apps. That company was acquired in 2018 and its product was retired in 2020. This site has been run independently since 2023 and is not affiliated with the original company or its successors.
Get in touch
Corrections, report suggestions, partnerships and press.
One email when a report changes
New figures, corrections and the filings behind them.