# SAT Exam Prep & Practice vs LIYSF

The clearest difference is update cadence: LIYSF at every 2 days against SAT Exam Prep & Practice's every 5 days. SAT Exam Prep & Practice's advantage is iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SAT Exam Prep & Practice ships an update every 5 days, LIYSF every 2 days. The most recent releases landed on October 10, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | SAT Exam Prep & Practice | LIYSF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/liysf/id6504500736/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 2 days** |
| Monetization | — | Free |
| Size | 85 MB | 85 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Aerion Design Labs Ltd.](https://appshunter.io/developer/1029206329) | [Gustav Brochmann](https://appshunter.io/developer/1710641457) |

## What reviewers say

### SAT Exam Prep & Practice

[App page](https://appshunter.io/ios/app/sat-exam-prep-and-practice/id6502644656)

**Features:** macOS Compatibility

**In-app purchases:** none


### LIYSF

[App page](https://appshunter.io/ios/app/liysf/id6504500736)

This app provides information about a two-week STEM summer camp in the UK, offering lectures, lab visits, and cultural interaction for students aged 16-21. It aims to deepen insight into science and its applications for humankind.

**Highlights:** STEM summer camp details, Online and in-person options, Lectures from leading scientists, Scientific visits to labs and universities, International cultural interaction, Skill development (communication, problem-solving)

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

**In-app purchases:** none


## Frequently asked questions

### Is SAT Exam Prep & Practice free?

SAT Exam Prep & Practice is free to download, with no in-app purchases.

### Is LIYSF free?

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

### Do SAT Exam Prep & Practice or LIYSF have ads?

Neither SAT Exam Prep & Practice nor LIYSF shows ads.

### Which is updated more often, SAT Exam Prep & Practice or LIYSF?

SAT Exam Prep & Practice ships an update every 5 days, and LIYSF every 2 days. Most recently, SAT Exam Prep & Practice was updated on October 10, 2026 and LIYSF on September 23, 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.*