No app is feature complete on a changing platform. The OS changes and the new hardware is different. Assumptions made years ago no longer hold. One of my apps

No app is feature complete on a changing platform. The OS changes and the new hardware is different. Assumptions made years ago no longer hold. One of my apps has been in the store for 10 years (Mac & iOS) and I have had to make many updates to keep it fresh. (Adding Retina support to the 3d rendering code and the picture assets, going 64 bit on iOS, dark mode, adding ARM to Mac, replacing deprecated API use, etc, etc.). These changes are in addition to updates that fixed bugs or added actual new app features and are part of the cost of doing business.