Is the iPhone Duo version free?

Yes. It is the same free Slabline app on the App Store; paid plans are optional and start at $9.99 a month.

What does Slabline do?

Slabline values graded trading cards, sports and Pokémon, from real recorded sales across PSA, BGS, SGC and CGC, predicts raw-card grades from a photo, and builds insurance-ready schedules for collections.

Slabline Is Made for iPhone Duo: What’s New in 2.6.2

Slabline 2.6.2 is live on the App Store, and it is the first graded-card value app for sports cards Made for iPhone Duo (as of October 31, 2026). Built with the iOS 27.1 SDK, it uses the whole unfolded display: a card’s value at every grade and every grader on one side, the market on the other. It is a free update for iPhone and iPad too.

What changes on iPhone Duo

Unfold the phone and a card page spreads across both halves: the price chart, every recorded sale, and the PSA, BGS, SGC and CGC comparison sit side by side instead of stacked. The market pages, indexes and your collection use the extra width the same way.

Fold it and Slabline is the same app you know on a regular iPhone. Nothing moves or resets when you switch.

Slabline on iPhone Duo: a 2003 Topps Chrome LeBron James PSA 10 with its value at every grader — Every grade and every grader for a card, on iPhone Duo.

Real screens, real cards

These are Slabline running on Apple’s iPhone Duo simulator: a card page with its slab and value on one side, and the card market’s daily indexes on the other.

Slabline running on the iPhone Duo simulator: the LeBron James PSA 10 card page — The card page, captured on the iPhone Duo simulator (iOS 27.1).

The market at a glance

Daily indexes for every category, the biggest recorded sales and what is moving — on the Duo they sit beside the card you are looking at.

Slabline card market indexes on the iPhone Duo simulator — Card market indexes on iPhone Duo.

Also new in 2.6.2

Pre-Grade: snap a raw card and Slabline estimates the grade, prices it at that grade, and tells you whether the grading fee pays off.

Deal alerts: tell Slabline which cards you want and get an email when one is listed below its value.

Insurance-ready schedule: every card, cert, grade and current value in one PDF for your broker or a collectibles insurer.

Card search from any card page, and support for iOS 27 throughout.

Slabline Pre-Grade predicting a PSA 8 for a raw 1986 Fleer Michael Jordan and recommending grading — Pre-Grade on a raw 1986 Fleer Michael Jordan: predicted PSA 8, and grading pays.

Scan a slab

Point the camera at a PSA, BGS, SGC or CGC label and Slabline reads the cert, finds the exact card and prices it at its grade, with its population.

Slabline scanning a 2025 Topps Cooper Flagg PSA 10 slab and showing its value — A Cooper Flagg PSA 10, scanned and valued.

How to get it

Slabline is free on the App Store for iPhone, iPad and iPhone Duo, and on Google Play for Android. If you already have it, the update installs on its own; you can also tap Update on the Slabline page in the App Store.