Clock - Simple & Customizable

Yes, the listing says free to download. The listing does not state any in-app purchases.

Yes. You can use a 24 or 12 hour format with am/pm, show a leading zero before single-digit hours, and show seconds or only hours and minutes. Tenths, hundredths and thousandths of a second can also be displayed.

Yes, this is optional. You can configure whether the app prevents the screen from automatically turning off. Brightness can also be adjusted optionally by swiping on the screen.

Clock - Simple & Customizable is free to download.

Clock - Simple & Customizable is built for showing the time full screen on a device, choosing a 12 or 24 hour time display, keeping the screen on while the clock is shown. It sits in the clock list on AppTierList.

Clock - Simple & Customizable is C tier, ranked #28 of 34 clock apps with a score of 63 out of 100, from a 4.4 App Store rating across 159 ratings. 27 apps rank above it in the same list.

Clock - Simple & Customizable is C tier at 63; The Digital Clock is C tier at 65. The Digital Clock ranks higher. Clock - Simple & Customizable is free to download, The Digital Clock is free to download.

Clock - Simple & Customizable was last updated over a year ago, on 2022-06-30, which holds its tier down.