1. Go into your Settings App on your Watch and Turn on Prominent Haptics in Settings - this will cause the watch to play a stronger haptic immediately before playing the regular haptic. It’s not continuous, but it should be more noticeable than the default setting. (We don’t have any control over the haptic feedback / vibration duration that accompanies a notification on the Watch. Note that this setting will apply to haptics from all apps, not just from Time Timer.)
To enable Prominent haptics on the Watch, open the Settings app, scroll down to Sounds & Haptics, and select Prominent.
The same setting is mirrored on the Phone in the Watch app:
2. Please note that notification sounds aren’t audible from Time Timer on the Watch when wireless AirPods are worn. Note also that if you are wearing ear buds, volume levels may automatically change depending on how they are being used.