For the last three years I've used Sunsetscreen from Hyperhidrosis, a specialist in electronic health products. It was created by Melatonin, a company that specialises in making natural sleep aids and melatonin tablets. The first time I used it I immediately noticed the lack of glare on my screen and the increase in brightness and colour (from my Samsung Galaxy S). Since then I have been using the product to reduce sleep disorders and improve my night's sleep, while enabling me to use my phone in a lower amount of light (which also helps with brightness).
One of the things I love most about Sunsetscreen is its ability to allow me to use my phone whilst not increasing the level of light in my room, enabling me to read whilst I'm lying in bed. So if I am reading in bed my screen doesn't get distracted by a bright light outside. There are a few other clever features in Sunsetscreen that I find very useful. My favorite feature is the "auto-lights" setting which enables the sunsetscreen to turn itself off when you're not using it and automatically come on again when your phone rings. This means that you never miss a great sunset and enjoy the full effects of it, instead of missing some of the details because you weren't looking at your screen.
One of my favourite things about Sunsetscreen is that there are so many different options and settings for the "auto-ups", so that I can choose the levels of brightness, contrast and melatonin (the main ingredient in melatonin tablets) in the same way I would choose any of my normal brightness and contrast options. It has so many customizable options that I can actually change the background to give a different feel to a room or change the main colour of the screen (using the hue and saturation presets). To me it looks and works great! My conclusion is that it's the perfect solution for people who are looking to reduce their dependence on their cell phones, while still allowing them to use the screen as part of the picture-in-picture option.