# Keystone Alg I Practice Tests vs SAT Prep & Practice by Magoosh

The clearest difference is price: SAT Prep & Practice by Magoosh at Free against Keystone Alg I Practice Tests's $0.99. SAT Prep & Practice by Magoosh also leads on rating (4.7 vs 2.0) and ratings volume (1.1K vs 7). Keystone Alg I Practice Tests's advantage is in-app purchases (none vs 1) and update cadence (every 2 months vs every 7 months). On ads and device support there is nothing between them.

SAT Prep & Practice by Magoosh is free to download; Keystone Alg I Practice Tests costs $0.99 up front. SAT Prep & Practice by Magoosh sells 1 one-off in-app purchase. Keystone Alg I Practice Tests asks for nothing beyond the download.

SAT Prep & Practice by Magoosh holds the better App Store score, 4.7 against 2.0. That said, the two scores are not equally well evidenced: SAT Prep & Practice by Magoosh has 1.1K ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 80% of Keystone Alg I Practice Tests's written reviews are positive against 90% of SAT Prep & Practice by Magoosh's.

Keystone Alg I Practice Tests ships an update every 2 months, SAT Prep & Practice by Magoosh every 7 months. The most recent releases landed on October 12, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Keystone Alg I Practice Tests | SAT Prep & Practice by Magoosh |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [2.0 (7 ratings)](https://appshunter.io/ios/app/keystone-alg-i-practice-tests/id795334519/reviews) | **[4.7 (1.1K ratings)](https://appshunter.io/ios/app/sat-prep-and-practice-by-magoosh/id1126174656/reviews)** |
| Number of ratings | 7 | **1.1K** |
| Positive reviews | 80.0% of reviews | **90.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 7 months |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 27 MB | 30 MB |
| Requires iOS | **8.0** | 13.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [iPREPpress LLC](https://appshunter.io/developer/390888386) | [Magoosh](https://appshunter.io/developer/522118006) |

## What reviewers say

### Keystone Alg I Practice Tests

[App page](https://appshunter.io/ios/app/keystone-alg-i-practice-tests/id795334519)

Prepare for your Algebra I exam with realistic practice tests. This app offers 120 multiple-choice questions across two tests, complete solutions, and helpful tools like a calculator and formula sheet to boost your confidence.

**Highlights:** 120 multiple-choice questions, Two practice tests with modules, Complete solutions provided, Formula sheet and calculator, Question navigator and flagging, Scoring with estimated Keystone score, Optional timer for time management

**Features:** macOS Compatibility

**In-app purchases:** none


### SAT Prep & Practice by Magoosh

[App page](https://appshunter.io/ios/app/sat-prep-and-practice-by-magoosh/id1126174656)

Prepare for the SAT with a comprehensive study partner. Access over 1,750 practice questions with video explanations, over 200 video lessons, and 3 full-length adaptive practice tests. Study offline and track your progress to achieve your target score.

**Highlights:** 1,750+ SAT practice questions, Video explanations for every question, 200+ video lessons, 3 full-length adaptive practice tests, Offline study mode, Progress tracker

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Magoosh SAT Premium | $129.00 | one-time |

**What reviewers like**

- 👍 Helpful for SAT/ACT prep
- 🙌 Comprehensive study resources
- 💯 Excellent free access to content

**What reviewers complain about**

- 🚫 Deceptive free trial offer
- 🤔 Confusing navigation between apps

**Reported bugs**

- Lesson videos not playing on some devices

**Requested features**

- More practice questions and tests
- Improved video playback on mobile


## Frequently asked questions

### Is Keystone Alg I Practice Tests free?

Keystone Alg I Practice Tests costs $0.99, with no in-app purchases.

### Is SAT Prep & Practice by Magoosh free?

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

### Which has better reviews, Keystone Alg I Practice Tests or SAT Prep & Practice by Magoosh?

SAT Prep & Practice by Magoosh is rated higher. Keystone Alg I Practice Tests averages 2.0 out of 5 from 7 ratings, while SAT Prep & Practice by Magoosh averages 4.7 from 1.1K ratings.

### Do Keystone Alg I Practice Tests or SAT Prep & Practice by Magoosh have ads?

Neither Keystone Alg I Practice Tests nor SAT Prep & Practice by Magoosh shows ads.

### Which is updated more often, Keystone Alg I Practice Tests or SAT Prep & Practice by Magoosh?

Keystone Alg I Practice Tests ships an update every 2 months, and SAT Prep & Practice by Magoosh every 7 months. Most recently, Keystone Alg I Practice Tests was updated on October 12, 2026 and SAT Prep & Practice by Magoosh on October 22, 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.*