Features

What the app does, screen by screen, and what it leaves to you.

Know the price before you grade

Versions 2.0 and 2.1 add prices for Japanese and English Pokémon cards, price alerts, a collection that tracks what your cards are worth, and a Worth Grading? that fills in the prices for you.

New in version 2.1

Pokémon card prices, Japanese and English Free

Look up 30,000+ Japanese Pokémon cards, from promos and high rarities to Master Ball mirrors, and 28,000+ English cards with their own sets and numbers; switch between the two at the top of the catalog. On a card page, pick Japan (yen), the US (dollars) or Europe (euros) to see recent sales and a 30-day chart, with a rough amount in your own currency underneath. Japanese cards also show how many sold in the last 30 days and the price range at card shops. When a region has no recent sales, the app says why and labels the shop price or lowest listing instead of guessing. Pro adds graded prices such as PSA 10 and PSA 9 and the full price history.

Price alerts Free on a few cards · Pro

Follow a card and get a notification when its price moves by 5, 10 or 20%, at most once a day per card (3 cards free). Or set a target price and hear when the card drops below or rises above it (1 card free). Unlimited with Pro.

My collection Free · chart with Pro

Add the cards you own with the quantity and what you paid. CenterMint shows the total value and your gain or loss at a glance; Pro adds a value-over-time chart.

Type 025/165, 25, #25, 89/88 or a promo number such as SV-P 001. Card names work in Japanese, English and kana, with or without spaces.

Catalog price screen with recent sales and a 30-day chart for a Japanese Pokémon card

Line styles for your card Free

Line styles made for white-border, black-border and foil cards, so the measuring lines stay visible on any card.

Line style presets made for white-border, black-border and foil cards

Border widths in mm or inches Free

Every result shows the real width of each border under the ratio, so you can compare it with a ruler or caliper. Choose millimetres, inches or off in Settings. The card size is detected from the photo: standard 63 × 88 mm cards (Pokémon, One Piece, Magic), 2.5 × 3.5 in sports cards and the smaller 59 × 86 mm Yu-Gi-Oh! size.

CenterMint result screen with the left/right and top/bottom centering of a sample card

Guided line check Free

When a line needs a second look, the editor takes you through the least certain lines one at a time. The loupe jumps to each line; tap “Looks Right” to move on, or drag the line where it belongs.

Why a line needs checking Free

Each step says why in plain words: glare, blur, a dark or low-resolution photo, a mat close to the card’s edge color, or no printed border found. If a retake would fix it, the app says so.

Guided line check: the loupe on one border line with the reason it needs a look

Worth Grading? Pro · 1 card free

Enter the raw, PSA 9 and PSA 10 sold prices (or the BGS and CGC equivalents), your grading fee and the selling fee. CenterMint shows how much more or less you would make than selling raw, and the lowest top-grade price that breaks even. Grades your centering cannot reach are left out. For Pokémon cards in the catalog, pick the card and the prices are filled in (graded prices with Pro); for other cards, you type them.

Try the break-even math

Use recent sold prices in one currency. The calculator runs in your browser; nothing is sent anywhere.

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Extra vs raw at PSA 9—

Extra vs raw at PSA 10—

PSA 10 break-even price—

Works the same for BGS (9.5 and 9) or CGC (10 and 9.5): enter those prices in the two grade fields.

Worth Grading? screen comparing selling raw with PSA 9 and PSA 10

Corner & Edge Close-ups Free on 3 cards a week · Pro

Crops all four corners and the middle of all four edges from the original photo at full resolution, so you can zoom in for whitening and dings and share a collage. The app shows the close-ups; it does not score corners or surface.

Top left
Top edge
Top right
Left edge
Right edge
Bottom left
Bottom edge
Bottom right

Crops from the Charizard photo at full resolution: four corners, four edges. You judge the whitening; the app does not score it.

Corner and edge close-ups cropped from the original photo

Submission Log Pro

Record each submission, what it cost and the grades that came back. See your top-grade rate, total grading fees, and whether returned grades stayed within the centering ceiling the app measured.

Submission Log with grading fees and returned grades

Share images Free

Share images put your card photo first, with a small logo in the corner.

Share image with the card photo and its centering

Batch 2.0 and the decision assistant Pro

Batch 2.0 (Pro): shoot a stack in a row, show only the cards that need checking, sort by centering and save in one go. The decision assistant sorts cards into Submit, Fix first (such as an unmeasured back) and Below target, and exports a submission checklist PDF.

Submission checklist PDF

What CenterMint does not do

Measurement runs on your iPhone and needs no account. Card photos leave the device only if you opt in: correction sharing is off by default, and batch import asks once before uploading, which you can decline. Prices you enter and your Submission Log stay on the device. See the privacy policy for details. Privacy policy (English)

The app is available in 16 languages: English, Japanese, Korean, Vietnamese, Simplified Chinese, Traditional Chinese, German, French, Spanish, Italian, Brazilian Portuguese, Dutch, Swedish, Danish, Norwegian and Greek.