The SENS motion activity sensor is a small band-aid that can be worn discretely on the leg. It contains an accelerometer that measures the movements, and categorizes it into types of activities and an activity level. A few times per day it will synchronize with a smartphone-app and upload the collected statistics to a web-server.
Get the setup package of SENS motion 2.8.4 at no cost and take a look at users' reviews on Droid Informer. The app works flawlessly on Android 4.4 and higher. This download is completely safe. SENS Innovation is the official developer of this application that can be found in the Medical tools category.
The most recent release was on Oct 11, 2020 and the tool was downloaded and installed by over 100 users. On Google Play, SENS motion was rated 4.2 by its users.