Love it so much!

Thank you for this helpful app! Been using it for years. International call is cheap and very convinent to use. I read on Google page that this app will be free for life. Please tell me that its so. Sideline has recently changed to a paid app, and I gave up my number. :(
A suggestion: When my phone rings, is there anyway to know that theyre calling my Google Voice or my regular number? It will be super if you can help with that. Thank you!!!

Mat6.33 about Google Voice, v2.7