What's the best iOS app for reading classic and new Marvel comics without a huge physical collection?

Marvel Unlimited is a subscription service designed specifically for readers who want comprehensive digital access to Marvel's comic book archive. For a monthly or annual fee, users can explore tens of thousands of issues, eliminating the need to hunt down and store physical copies. The app is particularly strong for guided reading; it offers curated lists and event-based reading guides, such as for major storylines like 'Ultimate Invasion,' which help new and returning readers navigate the extensive universe. Features like smart panel-by-panel viewing, offline downloads for reading without an internet connection, and bookmarking make it practical for daily commutes or relaxed reading sessions. While the library's breadth is a major strength, some interface quirks exist. Reviews indicate a recurring bug where issues from reading guides sometimes remain stuck in the 'Continue Reading' section even after completion, which can clutter the user's homepage. Despite this minor annoyance, the value proposition is clear for any fan. It transforms an iOS device into a portable, organized comic shop, providing a cost-effective alternative to purchasing individual issues or trade paperbacks.