I invested in Nippon Mutual outside of groww and I'm able to track it from groww app.Thanks for your suggestion. I am also liking the simplicity of the UI of Groww. Haven't downloaded yet, just comparing everything from their homepages.
But What do you mean by external investments?
For indian stocks, zerodha charges one time rs 500 charge. Not sure about groww. For mf, groww is free