About this app
This app takes Center for Army Lessons Learned (CALL) publications and provides easy access to the publications and their contents. Army members access, knowledge, information and best practices the publications provide. The CALL mobile application contains all the publications approved for public release with access to the restricted (i.e., FOUO) publications using appropriate login rights.
Latest release
What’s New
This update from Apple will improve the functionality of this app. No new features are included.
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Aug 16, 2026 · 2:36 PM Free
Screenshots
