Frequently asked questions

A live index of iOS apps moving through the App Store charts. It shows which apps are climbing, falling, entering the charts and gaining momentum, by country, category and chart, so you can spot fast-moving apps early.

From Apple's public App Store top 100 charts: Top Free, Top Paid and Top Grossing, overall and for each category, in every tracked country. App details such as the icon, developer, price and ratings come from Apple's public lookup service.

The charts are checked about every 6 hours, and a chart is only stored again when Apple has updated it. App details and ratings are refreshed once a day. Every page shows when its data was last updated.

10 countries and 25 categories, plus the overall charts. Only the iOS App Store is covered.

Every snapshot is kept for 14 days. After that, one snapshot per chart per day is kept, so long-term history stays available.

No. Apple doesn't publish download or revenue numbers, so Appulse Index doesn't show them. Anything that is an estimate, such as the activity level of a category, is labeled as an estimate.

It compares an app's rank now with its rank in the same chart and country at the start of the period you picked (24 hours, 7 days or 30 days). +12 means the app climbed 12 places; a minus means it dropped. Ranks are never combined across countries.

The app entered that chart in the last day, so there is no earlier rank to compare with.

The score (0 to 100) comes only from chart positions: how far an app climbed over 1, 3, 7 and 30 days, how fast, in how many countries, and how high it ranks. 75 and up is strong momentum, 50 and up is rising, 25 and up is warming up. It describes movement, not its cause.

An app whose first version came out recently (in the last 30 days by default; 1, 7 or 90 days can be picked) and that is in at least one tracked chart now. The release date is the one Apple lists.

When Appulse Index first saw the app in a tracked chart. It isn't the app's release date.

Only apps that have appeared in a tracked top 100 chart are in the index. An app that has never charted in a tracked country won't show up in search.

Yes. Every chart and app page is open to everyone. Without an account, lists show the first 10 apps and rank history covers 24 hours and 7 days.

Full lists (50 apps per page), sorting, rank range and minimum-move filters, rank history over 30 days, 90 days and all time, and a watchlist of up to 200 apps.

No. Appulse Index is independent and isn't endorsed by Apple. App Store is a trademark of Apple Inc. App names, icons and screenshots belong to their developers and are loaded from Apple's servers.