I would judge strep chat on how long a bad account stays up rather than on the feature list.
Two of us compared notes on the app and landed in the same place on how usable it is one-handed on a phone.
Provided whether the ratio is workable in your area holds up, the app is a reasonable place to start.
If you only test one thing on strep chat, make it whether the search actually respects what you set.
The thing that finally moved the needle on the chat was being specific about how precise the filters really are.
Before committing time to it, work out whether the filters survive a refresh.
The short checklist I use before trusting anything like strep chat:
- Whether strep chat works at all outside the three biggest cities near you
- Whether the filters on strep chat hold after you reload the page
- How strep chat behaves on mobile data rather than wifi