While browsing CrunchBase, I learned about a service called "Galore" that allows you to search a list of locally based activities for children. It is a startup in San Francisco.
Galore - kids activities, camps & classes
It is simple to use. Enter the age group, location, and time of day to search, and you will see a list of activities, camps, etc. as shown below. The following is an example of a search for San Francisco. You can book activities, etc. from this service, and payment is made via credit card through the app.
https://getgalore.com/events?area=San+Francisco
Galore isThe company successfully raised $1.65 million in funding last February. In addition, a community of parents using Galore is forming, and new options are being registered daily.
Antidone to screen time
One of Galore's concepts is,There is an antidote (antidone) from screen time. I know exactly what you mean. lol... Aside from the good and bad of smart phone parenting, if you can provide a relatively inexpensive and safe place for kids to have a full round of fun with other friends, that's the best thing you can do.