First Hour is an analogue alarm clock with a selection of modern faces and ringers. The unique alarm selector allows you to quickly adjust alarm times by moving them around the clock face. The interface has been optimised for comfortable use at night as well as in daylight. Other notable features include:

- Music alarms - wake up to selected or shuffled music.
- Flip to snooze - turn your device face down to snooze.
- Shake to snooze - works on Lock screen without needing to unlock.
- Multiple alarms
- Repeating alarms
- Adjustable clock brightness
- Day & night backgrounds, plus an automatic mode.
- Use your location to switch automatically between day & night display at sunrise and sunset.
- Fully optimised for Retina displays.
- English and 日本語

Some features require the app to be running in the foreground. When the app isn't in the foreground, standard 30-second iOS notifications are used to alert you of alarms (you'll need to allow these to be received).