I want to concentrate on something!
I need some motivation to put up with my phone!
I want to keep track of my study and work time!
I want to prohibit the use of apps that I can't stop touching!
I want a simple timer!
In such a case, let's get on a submarine and dive into the sea. As you dive deeper and deeper into the ocean, your focus will also get deeper and deeper!

Diver features
Measure and record your concentration time
Graph your concentration time in weeks/months/years.
Restricts the use of any apps.

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