Instead of third-party IMEI apps, use legitimate methods:
According to its description, IMEI Tracker 4.1 supposedly: Imei Tracker 4.1 App
If you lose your phone today, here is the action plan (skip the Imei Tracker 4.1 App entirely): Instead of third-party IMEI apps, use legitimate methods:
Do not: Pay a random website for IMEI tracking.
Do not: Download Imei_Tracker_4.1.apk from a forum. Do not: Pay a random website for IMEI tracking