There used to be an entire industry based on red lights, that would have nothing (or very little) to do with scarcely dressed women - they called themselves photographers. If you remember these times you probably call at least one of the mechanical wonders your own, which are today known as analog cameras and the best of them didn't have something called "in-camera metering" on the feature list. Well, here's an App for you - dust of your Leicas, Hasselblads and Linnhofs or whatever brand you fancy, stop looking for Mercury batteries and worrying about Selenium, what you need is already in your pocket! Photometer will turn your iPhone into a reliable Exposure Meter, a modern interpretation of what it should be in times of retina displays and touch screens - for old times sake we have included a classic skin that feels and behaves just like the real thing. Now go out and start taking pictures with grain, not noise!