Do you think this iOS Game idea will be fun? I do

It looks generic and already claims to adopt the freemium model. It almost looks like something Ray Wenderlich (a great blog, by the way) would have made to teach people how to develop a game for iOS.

However, I could be wrong. The gameplay could be completely unique, but there is no demo video to demonstrate that fact; all we have to rely on is the author's word.

It doesn't look like something I would pay for, especially given that it is still in the design stage. It might work as a paid-tutorial if all the code is released (gameplay code, assets, detailed tutorials, IAP code, etc.), but in its current state it looks like a Chinese-developed clone.