Assuming you meant a hypothetical or niche product called (an Android/Windows app for FCA vehicles), here is a complete hypothetical review based on how similar OBD apps perform. If this is a real, obscure app, this structure will help you evaluate it yourself.
While a generic scanner reads generic P-codes (e.g., P0300 - Random Misfire), DiagFCA reads manufacturer-specific codes from other modules. It can scan the: appcar diagfca
Appcar DiagFCA: The Ultimate Diagnostic Tool for FCA Vehicles Assuming you meant a hypothetical or niche product
Disclaimer: Diagnostic software should be used responsibly. Incorrect configuration or "coding" of vehicle modules can lead to vehicle malfunction. Always back up vehicle configurations before making changes. P0300 - Random Misfire)