Great, but with one VERY MINOR drawback
The ONE piece of feedback I would offer to the devs is to add the button feedback that makes the button(number or symbol) you’re pressing light up when you press it the way it does in the Android version. It makes typing out your math problems feel more accurate when you see the button give you feedback when you’ve pressed it. Panecal on iOS does this and I’ll happily switch back to HiPER and buy the premium version on iOS if this gets implemented.
The buttons on the Android version also look a bit nicer with the borders, rounded corners and shading compared to the more stripped back look of the iOS version of HiPER.
Response from developer
Hello, thank you very much for your feedback! We are aware of the buttons not showing the touch feedback, and track it in our TODO, so don't worry, it will be implemented in one of the following versions. Regarding the look, it seems to me that you prefer a different theme than the one implemented on iOS. We haven't implemented the themes switching yet either, but track that too. Just for the sake of clarity though - can you please send us a screenshot of the theme you prefer on Android to ios@hiperlabs.eu so that we can exactly see the difference you mean, and prioritize accordingly? Thank you in advance, and wish you all the best!