Allahu App APP
Perform ablution before zikr and if intends to do zikr after any farz Salaah then complete all the respective nawafil and start the zikr as mentioned in the App.
App also consists of many features like Asma ul Husna, Asma un Nabi, Namaz timings, Qibla direction, Shajra of Silsila-e-Aamiria and many more.