With my brother, we recently created a small app dedicated to this task: https://app.kipinto.ch
It's available on the web, on Android and on iOS, under the name Kipinto
This app is not specifically targeted to follow your friends, which happens quite naturally, but more to keep in touch with those persons that you consider important but with whom you have no "natural" occasion to interact: an old colleague or client for example.
You can see screenshots on the website https://kipinto.ch or on the app stores, but description is in French (even if the app is available in English)
An interesting observation we have done, is that by making the effort of taking notes of what you talked about, you remember better --even without reading the notes-- next time you see the person.
It can feel "disgusting", but in fact the effort of keeping contact with a person when it is not easy to do so should be seen as a positive sign of your intention to strengthen this relationship.
My bad, I completely forgot that the beta has been opened only to French speaking countries, but I can correct that.
In the meantime, you can test it with the webapp if you want: if you are satisfied, your account will be synced across all your devices so you will not lose anything.
(Obviously, if you test with an anonymous account, you will have to "upgrade" it to an "identified" account to be able to connect to it on another device)
It's available on the web, on Android and on iOS, under the name Kipinto
This app is not specifically targeted to follow your friends, which happens quite naturally, but more to keep in touch with those persons that you consider important but with whom you have no "natural" occasion to interact: an old colleague or client for example.
You can see screenshots on the website https://kipinto.ch or on the app stores, but description is in French (even if the app is available in English)
An interesting observation we have done, is that by making the effort of taking notes of what you talked about, you remember better --even without reading the notes-- next time you see the person.
It can feel "disgusting", but in fact the effort of keeping contact with a person when it is not easy to do so should be seen as a positive sign of your intention to strengthen this relationship.