Unveiled at TED 2013, a new app dubbed Uchek, developed by Myshkin Ingawale analyses chemical strips by taking photo of them after they have been dipped in your urine. No, really. 

The logic is unbeatable: everyone pees and a lot of people have smartphones. 

So what can you do with it? 

With the color comparisons as a guide, the app analyzes the results, and comes back in seconds with a breakdown of the levels of glucose, bilirubin, proteins, specific gravity, ketones, leukocytes, nitrites, urobilinogen and hematuria present in the urine. The parameters the app measures are especially helpful for those people managing diabetes, and kidney, bladder and liver problems, or ferreting out the presence of a urinary tract infection.

Smart, cheap and useful. Well played.