# Grade Sync Pro vs SlabFlow

The clearest difference is update cadence: SlabFlow at every 10 days against Grade Sync Pro's every 3 weeks. SlabFlow also leads on iOS requirement (15.0 vs 18.0). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Grade Sync Pro sells 1 in-app purchase, starting at $24.99 per month 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.

On the App Store both sit at effectively the same score — 5.0 for Grade Sync Pro against 5.0 for SlabFlow. Both are backed by a comparable volume of ratings — 2 and 3 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Grade Sync Pro ships an update every 3 weeks, SlabFlow every 10 days. The most recent releases landed on October 9, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Grade Sync Pro | SlabFlow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/grade-sync-pro-card-scanner/id6759976779/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/slabflow/id6760370624/reviews) |
| Number of ratings | 2 | **3** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 10 days** |
| Monetization | Freemium | Freemium |
| Size | 30 MB | 9 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mario Miron](https://appshunter.io/developer/1832534931) | [Aaron Parasiliti](https://appshunter.io/developer/1884157838) |

## What reviewers say

### Grade Sync Pro

[App page](https://appshunter.io/ios/app/grade-sync-pro-card-scanner/id6759976779)

This AI-powered tool helps trading card enthusiasts identify, analyze, and estimate the condition of collectible cards. It provides detailed grading analysis, centering tools, and market price insights to assist collectors and investors.

**Highlights:** AI card identification, AI grading analysis, Advanced centering tool, PSA submission preparation, Market price insights, Personal card inventory

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GSP Pro Monthly | $24.99 | per month |


### SlabFlow

[App page](https://appshunter.io/ios/app/slabflow/id6760370624)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SnapSlab Pro Monthly | $4.99 | per month |
| SnapSlab Pro Yearly | $34.99 | per year |


## Frequently asked questions

### Is Grade Sync Pro free?

Grade Sync Pro 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 Sync Pro or SlabFlow?

Grade Sync Pro and SlabFlow are both rated 5.0 out of 5 on the App Store, from 2 and 3 ratings respectively.

### Do Grade Sync Pro or SlabFlow have ads?

Neither Grade Sync Pro nor SlabFlow shows ads.

### Which is updated more often, Grade Sync Pro or SlabFlow?

Grade Sync Pro ships an update every 3 weeks, and SlabFlow every 10 days. Most recently, Grade Sync Pro was updated on October 9, 2026 and SlabFlow on October 31, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*