And Polish too, of course! But I am not developer of TipCards.io. I just did fork of their project and I would like to do a pull request to them after translations will be completed.
Discussion
For Polish language will be few other plural forms. I will write theirs later when you will send to me first translation for example. Please take your time with translations. Soon I will have to leave for a while and I will be back at the end of August. And at the end of August or in September, I will combine your translations.