Hello,
I have carefully read your description and understand that you need a time personal time reminder app for track & alert computer screen usage for a PC. I have carefully read your bid and think that C# is a more better language than Java. This is because of the fact that C# requires less RAM, storage and is a lot faster than Java. It has a wide range of support including Windows XP and its successors like Windows Vista, Windows 7 and Windows 10. I will provide you the best GUI and options. I am definitely sure that you will be satisfied with my work.
Looking forward to working with you...
Thank You,