Hello there @Dil 
Generally speaking, you can connect services that are not yet on Integromat using our universal HTTP module .
The thing is the one condition to connect apps to Integromat is for them to have public API. I’m looking at Any.Do and the only (unofficial) API documentation I found is 
here.
Judging from what I see, it seems that you need to install the API locally to your server/pc, and only then you can work with it. That, unfortunately, means that Any.Do’s API does not let you connect to Integromat.