Three20 is a collection of iPhone UI classes, like a photo viewer, and general utilities, like an HTTP disk cache. The primary SDK category for Three20 is Developer Tools. It is integrated in apps on the Apple App Store.

Based on downloads over the last 30 days, the most popular iOS apps on the integrating Three20 are:

  • ClickTheCity developed by Surf Shop Inc. in the Lifestyle genre
  • Flower Garden Free - Grow Flowers Send Bouquets developed by Snappy Touch in the Games genre
  • Fotovado (Photo Draw) developed by Widemouth in the Photo & Video genre
  • GPS Sports Tracker by Skimble developed by Skimble in the Health & Fitness genre
  • CodeREADr: Admin Edition developed by Skycore LLC in the Business genre

Based on the number of iOS apps integrating Three20, it is Not Popular.

In the last six months Three20 has fewer new installations than removals.

This SDK is most commonly used by iOS apps in the Social Networking genre, followed by the Music genre.

Similar SDKs include: