Google 使用者
It's great! It could be awesome, if it is able to create 'sets'. For example, Monday set, Tuesday set, Café set, baking set, etc. Just a suggestion. It is really nice.
Timer group function will be supported in the next version. It'll be officially released in a month time and the beta version is already available.
To use the beta version, be a beta tester in the google play store of Multi Timer Free.