simplest

• Quit MTMR.
• Expand Fn sub group.
• Currency. Tap to open url.
• YandexWeather. Tap to open url.
• Pomodoro. Tap to start timer for 30 min. Long-press to start timer for 5 min.
• CPU usage. Tap to open Activity Monitor.
• CPU temperature. Tap to open Activity Monitor.
• RAM usage. Tap to open Activity Monitor.
• Battery. Tap to open batery preference.
• Time. Tap to open app Clock. Long-press to open app Calendar.
• Inputsource. Tap to switch language.
• Volume Mute.

• Back to Default bar
• F1 - F12
• PgUp, PgDn, Del

By default you can enable basic gestures from application menu (status bar -> MTMR icon -> Volume/Brightness gestures):

• Two finger slide: change you Volume
• Three finger slide: change you Brightness