Comparison

SlabFlow vs Card Grader App

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

SlabFlow

Manage your trading card inventory, sales, and grading estimates all in one place. Track card costs, view sold comparables, and generate profit reports. Sync listings with eBay and manage team sales with advanced plans.

Highlights
  • Card inventory tracking
  • AI grading estimates
  • Sales and profit reporting
  • eBay listing sync
  • Team management features
  • Cost basis tracking
Features
Read full description

SlabFlow is inventory, selling and grading for trading card sellers, in one app. • Track every card with its cost basis, photos and sold-comp values • Grade estimates from your card photos: centering, corners, edges and surface • Snap a card to add it • See your sales, profit and reports (P&L, turnover, ROI) • Manage listings and sync your eBay sales • Run a shop with staff and roles (Team plan) Plans: Starter, Pro and Team, billed through your Apple account. Some features need Pro or Team. Terms of Use: https://www.slabflowai.com/terms

About

Card Grader App

This app assists collectors in evaluating and documenting the condition of trading cards. It offers a guided process for capturing card images and uses AI for condition analysis, providing a clear grade breakdown and shareable images of graded cards.

Highlights
  • Guided card capture
  • AI-assisted condition analysis
  • Clean grade breakdown
  • Slabbed card image generation
  • Organized card history
  • Easy sharing
Features
Read full description

Card Grader App helps collectors quickly evaluate and document the condition of their trading cards with a simple, guided workflow. It is designed to make grading easier to understand, faster to complete, and more consistent from card to card. - Guided card capture with clear prompts for front and back photos - AI-assisted condition analysis across key grading categories - Clean grade breakdown so you can see how the final result is formed - Slabbed card image generation for a polished presentation of your grade - Easy sharing of your slabbed card image with friends, buyers, and communities - Organized card history to review and compare previous grading results Whether you are checking a new pull, reviewing your collection, or preparing cards for sale, Card Grader App gives you a dependable way to grade with confidence and keep everything in one place. Disclaimer: This app provides centering estimates for educational purposes only. It is not affiliated with PSA, BGS, SGC, CGC, TAG, or ACE. Actual grades may differ. Privacy Policy: https://sites.google.com/view/allegrodigital/privacy-policy Terms of Use: https://sites.google.com/view/allegrodigital/terms-of-use

Screenshots

SlabFlow4 screens
Card Grader App4 screens

Verdict

The call

The clearest difference is rating: SlabFlow at 5.0 against Card Grader App's 3.7. SlabFlow also leads on update cadence (every 10 days vs monthly). On price, ratings volume, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. SlabFlow sells 2 in-app purchases, starting at $4.99 per month and Card Grader App sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

SlabFlow holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 3 and 3 respectively.

UpkeepUpdate frequency

SlabFlow ships an update every 10 days, Card Grader App monthly. The most recent releases landed on October 31, 2026 and October 23, 2026 respectively.

Scorecard2 real differences · 8 level
SlabFlow versus Card Grader App: the parameters behind the verdict, then further details
ParameterSlabFlowCard Grader App
PriceFreeFree
Rating5.0 (3 ratings) — better3.7 (3 ratings)
Positive reviews100.0% of reviews—
Number of ratings33
Update frequencyEvery 10 days — betterMonthly
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.015.0
Further details — not scored
Size9 MB20 MB
Age rating4+4+
DeveloperAaron ParasilitiAllegro Digital

Customer experience

SlabFlow

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Card Grader App

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%

In-app purchases

2 purchases

SlabFlow

Subscriptions2
  • SnapSlab Pro Monthly$4.991 Month
  • SnapSlab Pro Yearly$34.991 Year
2 purchases

Card Grader App

Subscriptions2
  • Weekly Subscription$4.997 Days
  • Yearly Subscription3 Days trial$29.991 Year

Questions

Is SlabFlow free?
SlabFlow is free to download, with in-app purchases available.
Is Card Grader App free?
Card Grader App is free to download, with in-app purchases available.
Which has better reviews, SlabFlow or Card Grader App?
SlabFlow is rated higher. SlabFlow averages 5.0 out of 5 from 3 ratings, while Card Grader App averages 3.7 from 3 ratings.
Do SlabFlow or Card Grader App have ads?
Neither SlabFlow nor Card Grader App shows ads.
Which is updated more often, SlabFlow or Card Grader App?
SlabFlow ships an update every 10 days, and Card Grader App monthly. Most recently, SlabFlow was updated on October 31, 2026 and Card Grader App on October 23, 2026.

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