This will never take off with that awful logo and mascot, and general silliness. With the "developed by Framasoft", like who the f* cares. It's noise, it looks awful, it repels potential users. Get some serious marketing person in.
The whole business model of living off of App stores, controlled by tech giants, is flawed, and no sane person should ever make this their sole source of income. It's like being held hostage.