I recently had to purchase a new 2018 MBP because my 2017 MBP’s keyboard took a poop and was having memory issues. They wanted me to send it back for 3 weeks and give them the admin password… I cannot be 3 weeks without my laptop, at any rate, I was setting up the new one and tried to grab ‘Interact Scratchpad’ and it says no longer available. I used that so much, is there something similar to that?
If you bought it from the Mac App Store you should be able to re-download it even if it is no longer available, although I’ve had problems do so with apps in the past. If you bought from the MAS and cannot re-download, contact Apple.
Otherwise, if you paid for the app through Agile Tortoise, just email or tweet at Greg and I bet he’ll send you a download link.
I don’t save lots of new contacts these days. If I have to do it on iOS I’m usually on the go and use my iPhone., and either enter data manually, into Contacts, or with a business card scanner. (I have a couple and never finalized on one as being substantially better than the other.)