Have been using healthifyme for calorie tracking. This app has a really good database of Indian diet. Hence tracking for Indian food is very easy.
However, the app lacks proper UX and sometimes makes it unusable even though its very useful app.
We integrated WorkOS to integrate different SAML services for one of the enterprise products. It is a great product that helps us integrate various Auth options with minimal effort.
Their documentation is great and makes developers life pretty easy.