Comparison

Grade My Card vs SlabFlow

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

Head to head
About

Grade My Card

This app helps collectors evaluate and grade their collectible cards. It offers precise centering measurements, professional grading estimates from major companies, and tools to assess card condition and potential value.

Highlights
  • Advanced centering analysis
  • Professional grading estimates
  • Front & back evaluation
  • High-quality image capture
  • Interactive adjustment tools
  • Detailed analytics
  • Export and share reports
  • Save multiple cards
Features
Read full description

GradeMyCard: Professional Card Centering & Grading Tool Discover the ultimate solution for evaluating and grading your collectible cards with GradeMyCard! Whether you're a professional grader, investor, or casual collector, our app provides precise measurements, professional grading estimates, and powerful tools to assess your cards' condition and potential value. Key Features: - Advanced Centering Analysis: Instantly measure card centering with precision using our sophisticated edge detection technology. Get accurate percentages for all four margins with just a tap! - Professional Grading Estimates: Receive reliable grade predictions from major grading companies like PSA, BGS, SGC, CGC, TAG, and GMA based on your card's centering measurements. - Front & Back Evaluation: Comprehensively assess both sides of your cards to get the most accurate grading estimates possible. - High-Quality Image Capture: Take crystal-clear photos of your cards using our optimized camera interface designed specifically for card photography. - Interactive Adjustment Tools: Fine-tune measurements with our intuitive controls to ensure perfect accuracy for every card. - Detailed Analytics & Visualization: View detailed breakdowns of your card's centering metrics with visual overlays and percentage displays. - Export & Share: Generate professional reports of your card measurements and grading estimates to share with buyers, sellers, or fellow collectors. - Save Multiple Cards: Build a digital portfolio of your graded cards to track your collection's quality and potential value. Whether you're preparing cards for professional grading, making informed buying decisions, or simply curious about your collection's quality, GradeMyCard provides the precision tools every serious collector needs. Notice: GradeMyCard is an independent card grading tool created for collectors and enthusiasts. All references to professional grading companies including PSA, BGS, SGC, CGC, TAG, GMA, and others remain the property of their respective owners. GradeMyCard is not endorsed, sponsored, or affiliated with any professional grading company. Our grading estimates are based on centering measurements and industry standards but are not guaranteed to match official grades from professional services. We respect the intellectual property rights of all grading companies and encourage users to utilize official grading services for definitive card evaluations. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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

Screenshots

Grade My Card3 screens
SlabFlow4 screens

Verdict

The call

The clearest difference is review sentiment: SlabFlow at 100% against Grade My Card's 0%. SlabFlow also leads on rating (5.0 vs 4.3) and update cadence (every 10 days vs every 5 months). Grade My Card's advantage is ratings volume (27 vs 3). On price, ads, in-app purchases and monetization model 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. Grade My Card sells 4 one-off in-app purchases and SlabFlow sells 2 in-app purchases, starting at $4.99 per month. 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 4.3. That said, the two scores are not equally well evidenced: Grade My Card has 27 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 0% of Grade My Card's written reviews are positive against 100% of SlabFlow's.

UpkeepUpdate frequency

Grade My Card ships an update every 5 months, SlabFlow every 10 days. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.

Scorecard5 real differences · 5 level
Grade My Card versus SlabFlow: the parameters behind the verdict, then further details
ParameterGrade My CardSlabFlow
PriceFreeFree
Rating4.3 (27 ratings)5.0 (3 ratings) — better
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings27 — better3
Update frequencyEvery 5 monthsEvery 10 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhoneiPhone, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size9 MB9 MB
Age rating4+4+
DeveloperAlberto MoralAaron Parasiliti

Customer experience

Grade My Card

All ratings27 ratings
Positive85.2%
Neutral0.0%
Negative14.8%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

SlabFlow

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

In-app purchases

4 purchases

Grade My Card

One-time4
  • Grade My Card Lifetime Normal$2.99
  • Grade My Card Lifetime 2$4.99
  • Grade My Card Lifetime Pro$5.99
Show 1 more
  • Grade My Card Lifetime Pro 2$6.99
2 purchases

SlabFlow

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

Questions

Is Grade My Card free?
Grade My Card is free to download, with in-app purchases available.
Is SlabFlow free?
SlabFlow is free to download, with in-app purchases available.
Which has better reviews, Grade My Card or SlabFlow?
SlabFlow is rated higher. Grade My Card averages 4.3 out of 5 from 27 ratings, while SlabFlow averages 5.0 from 3 ratings.
Do Grade My Card or SlabFlow have ads?
Neither Grade My Card nor SlabFlow shows ads.
Which is updated more often, Grade My Card or SlabFlow?
Grade My Card ships an update every 5 months, and SlabFlow every 10 days. Most recently, Grade My Card was updated on October 24, 2026 and SlabFlow on October 31, 2026.

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