I do feel that we have to be careful about selecting the right apps or games for our child, especially when app store ratings do not reflect the educational value, only popularity.
Sharing this article so we all know what to look out for.

https://skoopsg.com/the-dos-and-donts-of-educational-apps-for-kids-a-parents-guide/

this might help anyone who is finding and evaluating tuition centres

https://skoopsg.com/parent-to-parent-guide-finding-the-right-educational-centre-for-your-kids/

there’s a list of tuition centres that specialize in Maths here, in case anyone might find it helpful

https://skoopsg.com/essential-guide-to-your-childs-math-success-15-recommended-math-expert-enrichment-centres-every-parent-should-know/