Wake up alarm clock -vamos- is a free iPhone app developed by yutaka watanabe. It is a unique alarm clock that aims to ensure you wake up absolutely. The app includes a variety of missions that you must complete in order to stop the alarm. One recommended mission is to cut off the barcode or QR code from a bag of sweets and paste it on the wash basin. You then need to register the code using the app's camera. Once the alarm sounds, you cannot stop it unless you go to the washstand and take a picture of the code.

In addition to the barcode mission, there are other missions that can be set to stop the alarm, such as shaking the iPhone a certain number of times or solving a calculation problem. The app also includes a twice sleeping prevention function, which will sound the alarm again if the iPhone has not moved for 5 minutes after it is stopped.

Another useful feature of Wake up alarm clock -vamos- is the countdown to go out. The app announces the remaining time to go out in increments of 10 minutes, starting from 60 minutes. This feature helps prevent you from running out of time in the morning.

Overall, Wake up alarm clock -vamos- is a unique and effective alarm clock app that ensures you wake up on time with its mission-based system. It is recommended for those who struggle with waking up in the morning and want a more interactive alarm experience.