AT&T Smart Wi-Fi connection manager is a free app that finds and auto-connects to available hotspots, logs missed hotspot opportunities for your review and action for later use, and displays your real-time cellular and Wi-Fi data usage.

Let this app help to increase your Wi-Fi connections while minimizing your cellular data consumption. AT&T Smart Wi-Fi helps you find, auto-connect and remember available hotspots in places you frequent. This free app also displays your Wi-Fi and cellular data usage in real-time so you can keep tabs on your data plan usage. Running quietly in the background, AT&T Smart Wi-Fi uses hotspot auto-detection to make it easy for you to discover, select and build a list of available hotspots. Additionally, AT&T Smart Wi-Fi creates a hotspot opportunity list by logging and mapping hotspots you’ve seen -- but not connected to previously. By doing this, you can be notified of relevant hotspots the next time you’re in that area in order to connect.

AT&T Smart Wi-Fi uses accessibility services.
From version AT&T Smart Wi-Fi 3.4.1:
Miscellaneous bug fixes
Variant
Arch
Version
DPI
(Android 4.0+)
Latest: 3.1.3 on December 7, 2017
(Android 4.1+)
Latest: 3.3 on October 1, 2018
(Android 4.4+)
Latest: 3.4.1 on April 15, 2019
All versions
April 15, 2019
October 1, 2018
April 23, 2018
December 7, 2017