The quality varies. Some adaptations are excellent, with clear graphics and faithful renditions of the plot. But others might have issues like poor resolution or changes that don't sit well with fans.
Well, it's not straightforward. Some manga apps or websites claim to have unlimited access, but in reality, it might be limited by licensing or regional restrictions. You might have to do some digging to find truly unlimited options.
In my opinion, it depends on your preferences. Kindle might be better for some due to its dedicated e-reader interface and battery life. But apps can offer more features and options for customization.
Sure. But it depends on the format of the manga file and whether your Kindle Paperwhite has the necessary software updates to handle it. Some popular manga formats like EPUB and MOBI usually work fine.