# MatDoc vs NSF Certified for Sport®

The clearest difference is price: NSF Certified for Sport® at Free against MatDoc's $4.99. NSF Certified for Sport® also leads on ratings volume (33 vs 8). MatDoc's advantage is rating (4.5 vs 3.7) and review sentiment (100% vs 58%). On update cadence, ads, in-app purchases and device support there is nothing between them.

NSF Certified for Sport® is free to download; MatDoc costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

MatDoc holds the better App Store score, 4.5 against 3.7. Both are backed by a comparable volume of ratings — 8 and 33 respectively. Written reviews point the same way: 100% of MatDoc's written reviews are positive against 58% of NSF Certified for Sport®'s.

MatDoc ships an update every 4 months, NSF Certified for Sport® every 3 months. Both last shipped on November 1, 2026.

## The numbers

| Metric | MatDoc | NSF Certified for Sport® |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[4.5 (8 ratings)](https://appshunter.io/ios/app/matdoc/id487520461/reviews)** | [3.7 (33 ratings)](https://appshunter.io/ios/app/nsf-certified-for-sport/id489806362/reviews) |
| Number of ratings | 8 | **33** |
| Positive reviews | **100.0% of reviews** | 57.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 months** |
| Monetization | Paid | **Free** |
| Best chart rank | **#195** | — |
| Size | 55 MB | 49 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [The Mat Doc, LLC](https://appshunter.io/developer/487520464) | [NSF International](https://appshunter.io/developer/489806365) |

## What reviewers say

### MatDoc

[App page](https://appshunter.io/ios/app/matdoc/id487520461)

**Currently charting:** #195 Top Paid · Health & Fitness (US App Store)

This app helps identify common skin conditions in wrestlers by providing a visual guide. Users select the affected body area and browse photos to match the abnormality, then view descriptions of potential conditions. It serves as a supplementary tool for coaches, trainers, and parents.

**Highlights:** Body map for locating skin abnormalities, Photo gallery of skin conditions, Zoom and pan image functionality, Detailed condition descriptions, Assists in identifying infectious skin issues

**Features:** macOS Compatibility

**In-app purchases:** none


### NSF Certified for Sport®

[App page](https://appshunter.io/ios/app/nsf-certified-for-sport/id489806362)

Easily find safer sports supplements tested for banned substances and contaminants. Verify product contents against label claims and receive certification updates. Make informed decisions with advanced search and comparison tools.

**Highlights:** UPC barcode scanning, Search by supplement type, Search by goal (e.g., hydration), Side-by-side comparison, Push notifications for updates, Favorites list

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MatDoc free?

MatDoc costs $4.99, with no in-app purchases.

### Is NSF Certified for Sport® free?

NSF Certified for Sport® is free to download, with no in-app purchases.

### Which has better reviews, MatDoc or NSF Certified for Sport®?

MatDoc is rated higher. MatDoc averages 4.5 out of 5 from 8 ratings, while NSF Certified for Sport® averages 3.7 from 33 ratings.

### Do MatDoc or NSF Certified for Sport® have ads?

Neither MatDoc nor NSF Certified for Sport® shows ads.

### Which is updated more often, MatDoc or NSF Certified for Sport®?

MatDoc ships an update every 4 months, and NSF Certified for Sport® every 3 months. Most recently, MatDoc was updated on November 1, 2026 and NSF Certified for Sport® on November 1, 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.*