It's really easy to use! Just power on(right of top) the app then will speak/talk the time with text from 8am to 10 pm everyday automatically. (Don't worry! Nothing to set except clicking Power On('Activated Speak hours(time)').) ■ Math problems to improve brain and prevent dementia -Solve various math problems games with 5 levels of difficulty every hour. -Improve your memory and concentration! Listen your own text with voice every hour on hours. Simple and Lite Alarm. ■ 2 different Free O’clock setting - (0 to 59 minutes) - Work 50 min and Rest 10 min - Completely independent setup - Hourly-1(0m) : Cuckoo and Voice - Hourly-2(50m): Frog and Vibration - Hourly-2(50m): Listen a song - Hourly-2(50m): Speak in Spanish(another language) - Independent use day - Independent use time - Independent volume, music.. - Independent speaking settings - Follow Hourly-1 settings - Various vibration patterns On time notification Your own notification combination - Ring the bell / Speak current time and label / Vibration / Turn on screen hourly reminder schedule chime clock alarm! ■ Battery saving optimization(When reminders don't work well) Go on the Device's Settings. Apps > Speaking Alarm Clock > Battery > Optimise battery usage > Click App not optimised > Click All > Speaking Alarm Clock - Switch off ** this app never collect any user information !! ** picture/media/file permission; because use data base table for this app. ** device id and call info; because this app can control volume or vibration during in-call. ** internet/network; just for advertisement ** Loading time may vary depending on the manufacturer or the devices.(tts engine: text to speech)