# GregMat vs NIHCertification

The clearest difference is in-app purchases: GregMat at none against NIHCertification's 1. GregMat also leads on iOS requirement (12.0 vs 15.1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. NIHCertification sells 1 one-off in-app purchase. GregMat asks for nothing beyond the download.

GregMat ships an update fortnightly, NIHCertification every 2 weeks. The most recent releases landed on September 9, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | GregMat | NIHCertification |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (38 ratings)](https://appshunter.io/ios/app/gregmat-gre-and-toefl-prep/id6461601041/reviews)** | — |
| Number of ratings | **38** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 186 MB | 75 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Greg Mat LLC](https://appshunter.io/developer/1688935051) | [NATIONAL INSTITUTE OF HEALTHCAREER CERTIFICATION LLC](https://appshunter.io/developer/1884704912) |

## What reviewers say

### GregMat

[App page](https://appshunter.io/ios/app/gregmat-gre-and-toefl-prep/id6461601041)

This app provides comprehensive study materials and tools for GRE and TOEFL preparation. Access live and recorded classes, download content for offline viewing, and utilize flashcards and practice quizzes to build your skills.

**Highlights:** Study Plans for GRE and TOEFL, Offline Class Downloads, Weekly Live Classes, Recorded Video Courses, Vocab and Quant Flashcards, Quizzes and Practice Problems, Targeted Skill Building

**Features:** macOS Compatibility

**In-app purchases:** none


### NIHCertification

[App page](https://appshunter.io/ios/app/nihcertification/id6760490731)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PTCB Reinstate | $649.99 | one-time |


## Frequently asked questions

### Is GregMat free?

GregMat is free to download, with no in-app purchases.

### Is NIHCertification free?

NIHCertification is free to download, with in-app purchases available.

### Do GregMat or NIHCertification have ads?

Neither GregMat nor NIHCertification shows ads.

### Which is updated more often, GregMat or NIHCertification?

GregMat ships an update fortnightly, and NIHCertification every 2 weeks. Most recently, GregMat was updated on September 9, 2026 and NIHCertification on September 15, 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.*