# GRE Math Knight vs Joint Compass

The clearest difference is price: GRE Math Knight at Free against Joint Compass's $1.49. GRE Math Knight also leads on update cadence (monthly vs every 4 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

GRE Math Knight is free to download; Joint Compass costs $1.49 up front. Neither carries in-app purchases, so what you see is what you pay.

GRE Math Knight ships an update monthly, Joint Compass every 4 months. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | GRE Math Knight | Joint Compass |
| --- | --- | --- |
| Price | **Free** | $1.49 |
| Rating | **[4.5 (52 ratings)](https://appshunter.io/ios/app/gre-math-knight/id1535485326/reviews)** | — |
| Number of ratings | **52** | — |
| Positive reviews | 53.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 4 months |
| Monetization | Paid | — |
| Size | 133 MB | 559 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 9+ | 12+ |
| Developer | [Vince Kotchian Test Prep](https://appshunter.io/developer/1526464975) | [Steady Flow](https://appshunter.io/developer/1550297149) |

## What reviewers say

### 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


### Joint Compass

[App page](https://appshunter.io/ios/app/joint-compass/id6757522121)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is GRE Math Knight free?

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

### Is Joint Compass free?

Joint Compass costs $1.49, with no in-app purchases.

### Do GRE Math Knight or Joint Compass have ads?

Neither GRE Math Knight nor Joint Compass shows ads.

### Which is updated more often, GRE Math Knight or Joint Compass?

GRE Math Knight ships an update monthly, and Joint Compass every 4 months. Most recently, GRE Math Knight was updated on October 25, 2026 and Joint Compass 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.*