Yes, 順列と組み合わせ is completely free and it doesn't have any in-app purchases or subscriptions.
Not enough reviews to make a reliable assessment. The app needs more user feedback.
順列と組み合わせ is free.
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This was a great little app, but on the last update, the scroll inputs (from and choose input numbers) are now blank. The results still show but I have to blindly attempt to change the inputs until the output looks correct. It was 5 stars before before that (and it may work for you... but if you update the iOS, Apple purposely kills your battery life to get you to buy a newer phone).
Up until i had to update my software this was my go to program for determining P&C but now the scroll bars are invisible AND the final results are invisible as well. Please fix!
Currently not working for iPhone X newest OS
This app is extremely helpful for homework and saves me from having to buy an expensive calculator! You are life saver!
Awesome app. Very easy to use. Great for homework
Well designed & simple & easy to use. Big help with kids homework. Thanks!!
