This is awesome! I'm trying it on an iPad and doing pretty well.
For anyone looking for a deeper experience, you can try https://livecode.com/ -- runs on Mac, windows and Linux, produces single-file executables, and has many enhancements over HyperCard while retaining many oF HC's strengths.
For anyone looking for a deeper experience, you can try https://livecode.com/ -- runs on Mac, windows and Linux, produces single-file executables, and has many enhancements over HyperCard while retaining many oF HC's strengths.