# US Cop vs GRE Math Knight

The clearest difference is rating: GRE Math Knight at 4.5 against US Cop's 2.4. GRE Math Knight also leads on in-app purchases (none vs 1) and review sentiment (53% vs 29%). US Cop's advantage is ratings volume (196 vs 53). On price, update cadence and ads there is nothing between them.

Both are free to download. US Cop sells 1 in-app purchase, starting at $4.99 per 7 days. GRE Math Knight asks for nothing beyond the download.

GRE Math Knight holds the better App Store score, 4.5 against 2.4. Both are backed by a comparable volume of ratings — 196 and 53 respectively. Written reviews point the same way: 29% of US Cop's written reviews are positive against 53% of GRE Math Knight's.

US Cop ships an update every 6 weeks, GRE Math Knight monthly. The most recent releases landed on November 1, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | US Cop | GRE Math Knight |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.4 (196 ratings)](https://appshunter.io/ios/app/us-cop/id394647902/reviews) | **[4.5 (53 ratings)](https://appshunter.io/ios/app/gre-math-knight/id1535485326/reviews)** |
| Number of ratings | **196** | 53 |
| Positive reviews | 28.6% of reviews | **53.3% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Monthly** |
| Monetization | **Free** | Paid |
| Size | 3 MB | 133 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 12+ | 9+ |
| Developer | [App Holdings](https://appshunter.io/developer/808581339) | [Vince Kotchian Test Prep](https://appshunter.io/developer/1526464975) |

## What reviewers say

### US Cop

[App page](https://appshunter.io/ios/app/us-cop/id394647902)

This app provides law enforcement officers with a comprehensive digital resource library. It includes accident investigation tools, training articles on various police procedures, a pill and drug identifier, extensive case law summaries, and news feeds. It also features tools for evidence documentation and a work calendar.

**Highlights:** Accident investigation formulas and calculators, Training articles on detection and interrogation, Pill and drug identification tools, Extensive case law summaries, Evidence photo timestamping with GPS, Integrated work calendar

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| US Cop Weekly | $4.99 | per 7 days |

**What reviewers like**

- 🌟 Great information for LEOs
- 👍 Useful tool and reference
- 💡 Was an incredible resource
- 📚 Good for quick reference
- 💯 Valuable tool for officers

**What reviewers complain about**

- ❌ App no longer works
- 💸 Paid app is unusable
- 🚫 Ad covers entire screen
- 🗑️ Outdated and broken
- 📉 Support has been sunsetted

**Reported bugs**

- App redirects to web hosting page
- Menu redirects to parked ad page
- Ad pops up and blocks usage
- App doesn't work on iOS
- Sample reports PDFs not found

**Requested features**

- Update app for current law
- Add hazmat placard ID
- Add counter terrorism section
- Incorporate department PDFs/SOPs
- Modernize layout


### GRE Math Knight

[App page](https://appshunter.io/ios/app/gre-math-knight/id1535485326)

Practice GRE math concepts by battling monsters. This game covers arithmetic, algebra, geometry, and data analysis, with formula scrolls and mini-games to enhance learning. Become a GRE math knight and save the kingdom.

**Highlights:** GRE math concept practice, Arithmetic, algebra, geometry, data analysis, Formula scrolls, Mini-games, Monster battling gameplay

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

**In-app purchases:** none


## Frequently asked questions

### Is US Cop free?

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

### Is GRE Math Knight free?

GRE Math Knight is free to download, with no in-app purchases.

### Which has better reviews, US Cop or GRE Math Knight?

GRE Math Knight is rated higher. US Cop averages 2.4 out of 5 from 196 ratings, while GRE Math Knight averages 4.5 from 53 ratings.

### Do US Cop or GRE Math Knight have ads?

Neither US Cop nor GRE Math Knight shows ads.

### Which is updated more often, US Cop or GRE Math Knight?

US Cop ships an update every 6 weeks, and GRE Math Knight monthly. Most recently, US Cop was updated on November 1, 2026 and GRE Math Knight on November 7, 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.*