I really like this app and find it useful for keeping me on track. Simple but effective. I used the free version for almost 2 years. At the end of the first year it reset and I lost all of my history. So before the end of the second year I bought the premium version and promptly lost all of my history again. I contacted support to see if they could help and got no response at all. I still recommend it for tracking your habits but don't expect to keep the info long term or get help if you need it