I currently don’t have the time or resources to maintain Rocket Calculator. It will remain on the app store for those who have purchased it, but I don’t plan to continue updating the software. Thank you all who have purchased and used this product.
I have decided to open-source the code base of the most recent version. The address is https://bitbucket.org/peter_stanley/rocket-calculator-public
The current version in the app store is free for as long as it remains there. I will not renew my Apple developer account, which should expire in April/May 2017. After that it’ll probably be pulled, but those who’ve purchased will still be able to download it after that.