Default [APP][2.3.3+] Improve Your GRE Timing

Available in Google Play Store

Features:
Minimalist, intuitive interface that allows full control of the timer functionality.
Customizable time per section (30-55 minutes possible), as well as 5 or 6 sections.
Warning sounds, vibrations, and/or notifications according to GRE standards (5 minutes and end of section).
Notification bar displays timer status and allows instant access to the app.
Runs in the background, and saves timer when closed.