Glympse - Glympse is the easy way to safely share your location in realtime. No sign-up needed.

Brain Games - Boost memory power with free brain games

Mapple.me - Mapple.me bridges the gap between available time and availability of friends to increase social...

Dualnback.works - Dual N-back is a specific brain training exercise, that's been shown by research - it might improve fluid intelligence.

OwnTracks - Cross-platform location sharing

Pixelogic - Daily Picross - Nonogram logic game with 5000+ puzzles and a daily puzzle