For a lot of users their favorite hue app!

LampShade provides convenient and useful controls for smart home lighting.
Currently supports: Philips Hue, LIFX (beta) lets you:
• Control entire rooms with groups
• Set the mood with beautiful, animated color patterns
• Create custom moods and share with the LampShade community
• Lockscreen and homescreen widgets
• Lighting alarm clock
• NFC tag support to trigger moods (Philips Hue only)
• Automation Plugin that supports Tasker, Locale and Llama.