If you guys want to support the author/artist, Tapas has the official English release almost caught up. Tapas does have free ways to gain their in-app currency, the easiest being either taking surveys or simply getting bonus free gifts through certain app events or from the weekly fortune cookie. There's also comico's Pocket Comics app, which has only 3 episodes less than Tapas and also lets you gain free coins to unlock their episodes through surveys (I was able to fully catch up to The Countess and The Blade on said app, which did take me maybe 40~ coins which I gained for free, of course. New sign ups to Pocket Comics also recieve 20 coins for free, so it's not a bad deal for free.