there are many app builders available like thunkable, appybuilder etc. but i like to work on Makroid because its very simple to understand and great UI but unfortunatly some url is not loaded properly in the webviewer of makeroid, but other builders can open those links properly.
i don’t know why its not fixed yet. but i request the makeroid team to consider this.
for example open this link on both thunkable and makeroid - https://goo.gl/tB1vBu
you will get the difference