What do you like best about the product?

OneSignal is extremely easy to configure on their site, and integration into a Flutter app takes very little time at all.

What do you dislike about the product?

There is genuinely nothing to dislike about OneSignal.

What problems is the product solving and how is that benefiting you?

I spent AGES trying to get notifications working via Firebase console for Android and Apple. This proved to be a very cumbersome exercise which eventually worked for Android (although not reliably) and I never managed to get it working for Apple. I don't like to be beaten, so I spent over a week persisting and, in the end, I simply could not make it work. When I moved to OneSignal I kicked myself for not moving sooner". When I need notifications on my next app, I will have no hesitation on where to go first!