The application is very popular with Android users because it is really cool and simple. Many people write letters of praise and reviews - read them. And by the way, not 100K+ but a lot more)
It is very strange that Apple users are always skeptical about the application and write about notes and a notebook embedded in the iPhone and the ecosystem ) The gap in the number of downloads is enormous.
It doesn't matter which ecosystem, just try to send a list of tasks \ shopping list from Apple to Android without registration. This app solves the 1-2-3 problem easily.