Thunkable - Powerful but easy to use, drag-and-drop mobile app builder.

Canva - Canva is a graphic-design platform with a drag-and-drop interface to create print or visual content while providing templates, images, and fonts. Canva makes graphic design more straightforward and accessible regardless of skill level.

Xamarin.Android - Integrated environment for building not only native Android but iOS and Windows apps too.

PicMonkey - PicMonkey is a feature-rich online photo editor that works right in your browser; no downloads...

Kodular - Much more than a modern app creator without coding

Piktochart - Piktochart for Business Storytelling