What's a solid iOS app for reading manga on the go, especially one that doesn't drain my battery during a long cardio session?

Okay, so emaqi - Manga & Comics isn't a game-changer for training, but it's decent for catching up on my manga during those longer cardio sessions. I'm always tracking my heart rate zones accurately, and a dead phone throws off my metrics! emaqi can be a bit of a battery hog, gotta be honest, so I make sure to close it out when I'm crushing HIIT. I love that it keeps me entertained, but I wish it had better integration with my fitness apps to track calories burned while reading (kidding... mostly). The interface is clean, gets you moving without being preachy, and it's a solid way to de-stress after a heavy leg day. I'd say give it a shot, but keep a charger handy, especially if you're marathon training.