# G3MS vs SAT Practice Test & PSAT Prep

The clearest difference is update cadence: G3MS at every 2 months against SAT Practice Test & PSAT Prep's every 4 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. G3MS sells 8 in-app purchases, starting at $6.99 per month and SAT Practice Test & PSAT Prep sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

G3MS ships an update every 2 months, SAT Practice Test & PSAT Prep every 4 months. The most recent releases landed on September 25, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | G3MS | SAT Practice Test & PSAT Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (8 ratings)](https://appshunter.io/ios/app/g3ms/id1625313492/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Freemium | — |
| Size | 44 MB | 22 MB |
| Requires iOS | **15.1** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 9+ | 4+ |
| Developer | [Get Gems App Corporation](https://appshunter.io/developer/1625313494) | [iAPPSSTUDIO](https://appshunter.io/developer/1830642259) |

## What reviewers say

### G3MS

[App page](https://appshunter.io/ios/app/g3ms/id1625313492)

This app motivates K-12 students to learn by completing daily challenges and building streaks to earn real rewards like gift cards. It features an AI tutor for personalized help and flashcards for practice across various subjects. Parents and teachers can track student progress through a dedicated dashboard.

**Highlights:** Daily learning challenges, Streak building for rewards, AI-powered learning guide, Flashcards and practice questions, Progress tracking for parents/teachers, Earn gift cards and tokens

**Features:** macOS Compatibility

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Kid Monthly Plan | $6.99 | per month |
| Monthly Plan | $7.99 | per month |
| 2-4 Kids Monthly Plan | $11.99 | per month |
| 1 Kid Yearly Plan | $67.00 | per year |
| Yearly Plan | $76.90 | per year |
| 2-4 Kids Yearly Plan | $115.99 | per year |
| Monthly - 1 kid | $6.99 | one-time |
| Lifetime Plan | $169.00 | one-time |


### SAT Practice Test & PSAT Prep

[App page](https://appshunter.io/ios/app/sat-practice-test-and-psat-prep/id6764739248)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Get Lifetime Access | $7.99 | one-time |


## Frequently asked questions

### Is G3MS free?

G3MS is free to download, with in-app purchases available.

### Is SAT Practice Test & PSAT Prep free?

SAT Practice Test & PSAT Prep is free to download, with in-app purchases available.

### Do G3MS or SAT Practice Test & PSAT Prep have ads?

Neither G3MS nor SAT Practice Test & PSAT Prep shows ads.

### Which is updated more often, G3MS or SAT Practice Test & PSAT Prep?

G3MS ships an update every 2 months, and SAT Practice Test & PSAT Prep every 4 months. Most recently, G3MS was updated on September 25, 2026 and SAT Practice Test & PSAT Prep on September 16, 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.*