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Purely for fun, following a career in software and electronics, I thought I'd have a go at writing an Android app and try to get it published on Play Store. Pure Sudoku! is the result. It's free to download and use, carries no ads, collects no user data, doesn't install malware and doesn't even require an internet connection. If you've enjoyed my app and would consider supporting its ongoing maintenance and development via a small donation, then I would be both grateful and honoured. Thank you.