Big Clock HD

The light dims. It is very difficult to make it brighten. Then, it dims the entire phone. I have to lock and restart my phone in order to bring the brightness back to everything else on it.

Don't let the bad reviews put you off. This is a very readable clock, especially on the iPhone in landscape mode.

This is the only clock I've found that does what I need. Each night, I put it on my night stand, and it shows me the time -- and day and date -- with a simple, classy Helvetica-like display -- easily dimmed or brightened. Double-tapping orients it if necessary. Yes, you need to make it brighter before you switch apps. On the other hand, it is just right for quickly adjusting your screen brightness without menu-ing through Settings. All this is enough for me. I like, I need it. Simplicity beats o

The reviews that criticize the app for not being able to show the time when the app is closed don’t understand how apps work. Apps can’t do that because Apple won’t let them. If you want an app to show you a big clock on your iPhone or iPad, I’ve bought several and this is the best one. You can control the brightness by dragging your finger up or down on the screen. The app needed an update for iOS 11, which has now been done, so it works fine again. Thanks to the developers!

I appreciate that this clock also displays the date and time. Some people have complained about the app icon not being a live clock. They do not understand that an app developer can only use a static image as an app icon. The Apple clock icon does show the actual time, but it does not open to a full screen clock which is the purpose of Big Cloch HD.