There are apps in which each member of the household can register which chore has been done, by whom, how much time it took or how much difficult it subjectively was, such as http://ourhomeapp.com/. Source: over 1 year ago

I think Our Home has everything you’re asking for! http://ourhomeapp.com/. Source: over 1 year ago

My husband and I use OurHome with each other and it is meant to be used with kids. I think it has everything you mentioned and more! http://ourhomeapp.com/. Source: about 2 years ago

While non-selfhosted, I believe OurHome is the most recommended app for tracking kids' chores, allowances, rewards, and such. Maybe someone will build a self-hosted alternative. Source: about 2 years ago

Do you have younger children who are old enough to use an app but not old enough to remember all the duties they have to do around the house? Then the OurHouse app is a must for your smartphones and tablets. The basis of this application is that it allows parents to set a list of chores to do and assigns them point values. Once your child completes enough tasks, they will earn benefits from screentime to having a... Source: over 2 years ago

We also offer one of the few free and ad-free alternatives to Google Forms ( https://framaforms.org ). And https://framadate.org (alternative to Doodle) welcomes nearly 75 0000 people per day and is installed by hundreds (thousands?) of organizations. Source: about 3 years ago

Alternatively to Doodle, if you want something that handles your data more sensitive, then go for Framadate. Source: about 3 years ago