It’s a nice app for “very beginners” BUT
First: If you can’t do it in other languages, just let it be in a language it made in.
Second: give a chance to users to have another way to solve a test. Example: print (x, y) != print (x + y), but it’s still a right way to solve an issue. Otherwise make annotations that it should/ shouldn’t be a space between data, but it still many ways to do it…
One again: It’s not a bad app, but have some problems in realizing.
1. Make it in good English
2. Make a tests on output, not input (each programmer have it’s own option how to realize the output)
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