My name is Gert and I have made a website for all euro coin collectors. You can keep an eye over your collection and always quickly look which coins you are missing. It's of course free and mobile friendly. Webpage is in english and in estonian, but if you want to contribute, then I am looking for people who could translate it into other languages.
Take a look at www.coincollector.eu
Good decision, thanks. How do I see just the ones I am missing (including years)?
Next to logo on header press the switch and go to Album, there can you see all coins that are missing, but it only shows if you don't have any year of coin collected.