When set to run for 12 hours, the light shuts off and does not come on the next day. This defeats the purpose of the timer feature.

The timer function is so great and my house plants love it! App works great with ios. They have timers and dimmers/etc you can set directly from the light but they also have an app- i love this feature.

The app you have to use for this to function fully is frustrating. The timer for the light has nothing but a pain. They won't hook up to the app, they come with virtually no instruction and frankly, i don't need the frustration.