Custom Pomodoro length is a Pro feature, you need to upgrade to Pro account to use it. Please set a suitable pomo length according to yourself, we suggest not adjust frequently

Web

Click your username​ at the top right corner -> Open Settings -> Pomodoro and then adjust pomo length and save.

Android

Open Settings -> Click Pomo Duration to adjust the length.

iOS

Open Settings -> Click Pomodoro Duration to adjust the length.