I am a developer. I write apps for iOS, iPadOS and macOS. My current apps include:
Qrafter® – QR Code Reader and Generator
Qrafter® is the most comprehensive QR Code and 2D Code scanner and generator for iOS including a customized user interface for iPadOS. You can download it from https://qrafter.com/
PSWD – Password Generator
PSWD is a utility app for iOS and macOS. It can generate strong random and phonetic passwords that can be fully customized to suit your needs. You can find out more about it on https://keremerkan.net/pswd-password-generator/ or download it on the App Store.
SMS Checker is a self learning SMS filtering app for iOS and iPadOS, written using CoreML. Currently it is not for sale and will be replaced with a new app in the future.