Kind Request to developers. 1. Themes apply only to the home screen and not to lock screen 2. Themes created and saved, no need to apply to save the themes. All these can be done when clicking the tick bottom after creating the theme giving option to either to save, apply both lock and home or just to the home screen. Usage breaker could be expanded by giving options to set time limits and option to close app or close app automatically once times is up. Thank you