Use even, indirect light
Avoid a single harsh light source. Chrome, refractors, and holo parallels throw glare that can hide the set name and card number.
Get in touch
Bug reports, wrong identifications, billing questions, feature ideas — all welcome.
maximusislamabadg84@gmail.comGet better scans
Recognition accuracy depends a lot on the photo. Four things make the biggest difference.
Fill the frame, straight on
Hold the camera parallel to the card and get the whole card in frame with a little margin. Angled shots distort centering analysis.
Keep the back handy
If a card is hard to place, the back usually carries the set, year, and card number. Scan it when the front alone isn't enough.
Slabs scan fine
Graded cards work too — just tilt slightly to kill reflections off the plastic so the label stays readable.
Common questions
Preslab identified my card incorrectly. What now?
Rescan with better light and the full card in frame — that fixes most misses. If it's still wrong, email us the photo and what the card actually is. Reports like these are how recognition gets better, and we genuinely want them.
Why does the price look too high or too low?
Estimates reflect real market and recent-sale data, which moves constantly and varies by condition and parallel. A raw card and a graded copy of the same card can be worlds apart in value. If a figure looks far off, send it over and we'll take a look.
Can I trust the pre-grade for a submission decision?
Use it to prioritize — it's designed to tell strong candidates from long shots so you're not paying to grade cards that won't grade well. It is not an official grade, and PSA, BGS, or SGC may return something different.
How do I manage or cancel my subscription?
Subscriptions are billed by the app store, so they're managed there: on iOS, open Settings → your name → Subscriptions. Refunds are handled by the app store under its own policy. If something looks wrong on our side, email us and we'll help sort it out.
Will my collection move to a new phone?
Yes. Preslab is account-free, but your collection and scanned images are backed up to our cloud, so reinstalling the app or setting up a new device restores what you've saved. If something doesn't come back, email us before you start re-scanning.
Delete your data
Preslab has no accounts, but your collection and scanned images are backed up to our cloud so they survive a reinstall. That means uninstalling alone does not remove everything:
- Delete individual cards inside the app — that removes the card and its scanned image from our cloud too.
- Uninstalling Preslab clears the copy on your device, but the cloud backup remains so your collection can be restored.
- To erase everything we hold, email maximusislamabadg84@gmail.com with the subject "Privacy Request". We respond within 30 days, except for anything we're legally required to retain.
Deletion is permanent — a deleted collection cannot be restored. Read the Privacy Policy for full detail on what we store and for how long.