Comic Book Collection Tracking
Spotting exactly which issues you're missing from a run
Collecting single comic book issues (not trades, not digital bundles) has a specific organizational problem that other collectibles don't share as sharply: series run continuity. A collector isn't just asking "what do I own" — they're asking "which issues of this specific series am I missing to complete the run," which requires the app to understand issue numbering and gaps, not just a flat list of items.
The other recurring pain point is convention and back-issue-bin shopping: standing in front of a long box at a show, trying to remember from memory whether you already have issue #47 of a series you've been collecting for years. Backnumber is built specifically around single-issue collectors — log what you own by series and number, see missing-issue gaps at a glance, and keep a want list you can check while digging through bins.
The app
How it compares to other tools
Frequently asked questions
Why is tracking single issues different from tracking trade paperbacks or graphic novels?
Single-issue collecting is fundamentally about completing runs — knowing exactly which numbered issues of a series you have and which you're missing. Trade paperbacks and graphic novels are typically tracked more like books (owned or not owned), without the same gap-in-a-sequence problem.
What information actually matters when logging a comic issue?
At minimum: series title, issue number, and condition (which affects both readability and resale value). Price paid and notes (variant cover, first appearance, signed, etc.) matter more to collectors tracking value or chasing specific variants.
How does a want list help versus just remembering what you need?
Back-issue shopping happens in bursts — at a convention, in a shop's dollar bins — and memory is unreliable under those conditions, especially across many series at once. A want list you can pull up on the spot turns 'I think I need this one' into a certain answer.