For anyone whose collection already lives somewhere else. The whole move is one CSV and about ten minutes. Nothing is deleted at the other end, so you can run both until you trust this one.
1. Export from your current app
Every app we see people come from exports a CSV or Excel file: CLZ Comics, League of Comic Geeks, Comic Book DB, or a spreadsheet you keep yourself. Export everything rather than a filtered view, and include the purchase columns if the app offers a choice.
2. Upload it
Go to Import. CSV and XLSX both work, up to 50 MB. Files from CLZ, League of Comic Geeks and Comic Book DB are recognized on upload and their columns are mapped for you.
3. Check the column mapping
The wizard shows your columns next to ours before anything is written. The four worth checking by hand, because they are the ones you cannot rebuild later:
- Acquired price and shipping cost. Your cost basis, and the input to every profit number.
- Condition grade. Decides which market value applies to your copy.
- Issue number and publisher. These drive catalog matching, so they decide how much fills itself in later.
Detail: CSV import covers the wizard screen by screen, including duplicate detection and what happens to rows that fail.
4. Import, then fill the gaps
After the import, go to Settings → Data and click Run Bulk Enrich to pull creators, dates, descriptions and covers from the catalog. It does 200 books a run, twice an hour.
Detail: Importing covers the app-specific quirks, and Inventory covers fixing a book by hand.
5. Spot-check twenty books
Open a handful across the collection and compare them to the old app. You are checking that the price you paid, the grade, and the issue number all came across. If a column landed in the wrong field, it is far easier to re-import now than to fix 800 rows later.
Gotchas
- The free plan stops at 500 comics. A larger import brings in what fits and reports the rest as skipped. Upgrading and re-importing the same file picks up where it left off, because duplicates are detected.
- Variants need the detail in their own field. A cover letter or ratio buried in the title is harder to match than the same value in the variant column.
- CLZ files can contribute to the shared catalog. The wizard shows a checkbox for that on CLZ imports only, and it is off unless you tick it.