MatDoc vs NSF Certified for Sport®
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MatDoc
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.
- 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
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The purpose of this application is to aid the user in the identification of skin conditions common to wrestlers. The user - a coach, trainer, nurse, parent, wrestler, referee - will normally be confronted with some type of skin abnormality, perhaps an infection. It is known that most skin conditions present themselves at certain regions of the body. Therefore, the user will be presented a map of the body, from which the user will select the location of the wrestler's skin abnormality. The user will be presented with a gallery of photos associated with that location on the body. Each photo is linked to only one skin condition. One skin condition can link to many photos. The user can select from the gallery a photo that most closely matches the wrestler's condition. The user can then center, zoom in/out, to observe different parts of the photo. From the photo the user has the option to view a description of the condition linked to the photo or go back to the gallery to select a different photo. The use of this app is to assist the user in diagnosing an infectious skin condition. It's usage is at the discretion of the end user and should never replace the relationship you have with or opinion of your physician.
NSF Certified for Sport®
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.
- UPC barcode scanning
- Search by supplement type
- Search by goal (e.g., hydration)
- Side-by-side comparison
- Push notifications for updates
- Favorites list
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Why Download the Certified for Sport app® NSF’s Certified for Sport® app helps you find tested, safer sports supplements in just seconds. We built our app listening to athletes, coaches and active adults who want to be certain the supplements they use are tested, certified and safer. If a product is Certified for Sport®, you can be sure it - is manufactured at a facility that is audited for quality and safety - has been tested for more than 270 athletically banned or harmful substances and unsafe levels of contaminants - and that it has been certified that the contents shown on the label are actually in the product The NSF Sport app features a clean, intuitive design with a variety of search and display features to suit your individual goals. • Advanced tasks, such as UPC barcode scanning, make it more convenient than ever to check to see if a product is Certified for Sport®. • Expanded search capabilities allow you to search by supplement type such as protein or by goal, such as hydration. • Side-by-side comparison features allow you to make smart and effective decisions about which supplements best fit your needs. Stay up to date on the sports supplements that matter to you with our push notification and favorites features. Compile lists of your preferred products or brands with one tap and get notified of important Certified for Sport® certification updates as they happen. With so many choices on the market, it pays to be cautious. If you use a product that has been Certified for Sport® you can be confident that its contents are being regularly checked by one of the most respected certifiers in the world. Do your research and look for the Certified for Sport® mark on products and download the app now!
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | MatDoc | NSF Certified for Sport® |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 4.5 (8 ratings) — better | 3.7 (33 ratings) |
| Positive reviews | 100.0% of reviews — better | 57.7% of reviews |
| Number of ratings | 8 | 33 — better |
| Update frequency | Every 4 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Best chart rank | #195 — better | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 11.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 55 MB | 49 MB |
| Age rating | 12+ | 4+ |
| Developer | The Mat Doc, LLC | NSF International |
Customer experience
MatDoc
NSF Certified for Sport®
In-app purchases
MatDoc
No in-app purchases
NSF Certified for Sport®
No in-app purchases
Questions
Is MatDoc free?
Is NSF Certified for Sport® free?
Which has better reviews, MatDoc or NSF Certified for Sport®?
Do MatDoc or NSF Certified for Sport® have ads?
Which is updated more often, MatDoc or NSF Certified for Sport®?
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