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One Alarm


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One Alarm is a minimal alarm clock.

Drag the minute hand to set the alarm time. Drag or tap the switches to turn the alarm ON/OFF and quickly set AM/PM.

If you’re sick of complicated alarm interfaces, One Alarm is for you. Tapping through multiple menus just to set an alarm is tedious. With One Alarm, you can set an alarm with one tap.

On devices with iOS 4.0 and higher (iPhone 3G and up) , alarms will sound even when the app is closed. You can simply set the alarm and exit the app. A badge on the One Alarm icon will appear and countdown every hour to show approximately how many hours are left until the alarm sounds.

Make sure you have your notification settings to allow One Alarm to alert you.
Notification Center>>ON (Show 1 Recent Item)
Alert Style >>ALERTS
Badge App Icon >>ON
Sounds >>ON
View in Lock Screen >>ON

Only Alarm is free for the first 10 days after you begin using it. After 10 days, if you love the app you are welcome to unlock it for 99 cents (via in-app purchase). If not, that’s ok but you won’t be able to set any more alarms. It’s free to try One Alarm, but costs 99 cents if you find it useful and want to keep using it. We think this is fair and hope you do too. As always your support is greatly appreciated.

Love, CW&T

What's New in Version 1.23

update for notification center in iOS 5.01


iPhone Screenshot 1
iPad Screenshot 1

Customer Reviews

It works. (my bad)

Come to find out the alarm didn't work, unbeknownst to me: my lack of the iPhone new setting features. Make sure your Notifications are intact.
CW&T offers great customer support. They walked me thru my issue. This alarm is clean. Minimal. And extremely samurai!


I really like this ultra simple alarm app VERY much! It works perfectly and I can easily set the alarm within just a few seconds. The best part is that this alarm ALWAYS works. It has never failed me.

It is truly the epitome of simplicity!!!

Updated for iOS 5

Updates have been made to work with iOS 5 including the new notification center.

One Alarm
View in iTunes
This app is designed for both iPhone and iPad
  • Free
  • Category: Utilities
  • Updated:
  • Version: 1.23
  • Size: 9.5 MB
  • Language: English
  • Seller:

Compatibility: Requires iOS 3.1 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

Current Version:
All Versions:

Top In-App Purchases

  1. instant unlock$0.99