Try Milestone for WP7! (Coming soon to Android and iOS). I can't guarantee your significant other will appreciate the fact you remembered the 4-month anniversary of your first date, but it certainly couldn't hurt.
Q&A for professional and enthusiast programmers
Q&A for professional programmers interested in conceptual questions about software development
Q&A for system and network administrators
Q&A for computer enthusiasts and power users
Q&A for professional and independent game developers
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Q&A for power users of Apple hardware and software
Q&A for enthusiasts and power users of the Android operating system
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems.
Q&A for database professionals who wish to improve their database skills and learn from others in the community
Q&A for users and developers of hardware and software for Raspberry Pi