# 23 Equations vs PhysQuiz 23 Equations and PhysQuiz both sit at 5.0 stars, but that hides the real split: 100% of PhysQuiz's written reviews are positive against 48% of 23 Equations's. PhysQuiz also leads on ratings volume (18 vs 1). 23 Equations's advantage is update cadence (every 2 weeks vs every 6 weeks) and iOS requirement (9.3 vs 15.6). On price, rating, ads and in-app purchases there is nothing between them. Both are free to download. 23 Equations sells 7 one-off in-app purchases and PhysQuiz sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters. On the App Store both sit at effectively the same score — 5.0 for 23 Equations against 4.9 for PhysQuiz. That said, the two scores are not equally well evidenced: PhysQuiz has 18 ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 48% of 23 Equations's written reviews are positive against 100% of PhysQuiz's. 23 Equations ships an update every 2 weeks, PhysQuiz every 6 weeks. The most recent releases landed on October 12, 2026 and October 20, 2026 respectively. ## The numbers | Metric | 23 Equations | PhysQuiz | | --- | --- | --- | | Price | Free | Free | | Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/23-equations/id1451090127/reviews)** | [4.9 (18 ratings)](https://appshunter.io/ios/app/physquiz-aqa-gcse-physics/id1473746574/reviews) | | Number of ratings | 1 | **18** | | Positive reviews | 47.6% of reviews | **100.0% of reviews** | | In-app purchases | Yes | Yes | | Ads | No | No | | Update frequency | **Every 2 weeks** | Every 6 weeks | | Monetization | Free with in-app purchases | Free with in-app purchases | | Size | 143 MB | 58 MB | | Requires iOS | **9.3** | 15.6 | | Devices | **iPhone, iPad, iPod** | iPhone, iPod | | Age rating | 4+ | 4+ | | Developer | [Nick Whitehurst](https://appshunter.io/developer/1451090126) | [Richard Melville](https://appshunter.io/developer/1472605429) | ## What reviewers say ### 23 Equations [App page](https://appshunter.io/ios/app/23-equations/id1451090127) Master GCSE and IGCSE Physics equations with interactive learning and practice questions. The app provides instant feedback, model answers, and timed challenges to improve recall and application. Teachers can create and monitor student tests for effective revision planning. **Highlights:** Learn physics equations by heart, Practice questions with step-by-step help, Model answers for improvement, Timed challenges and games, Teacher-created tests for students, Monitor student progress and answers, Index card-style equation reference **Features:** macOS Compatibility **In-app purchases (7)** | Purchase | Price | Billing | | --- | --- | --- | | Individual: Extra features | $1.99 | one-time | | School Room, 2022 Exams (S) | $39.99 | one-time | | School Room, 2023 Exams (S) | $39.99 | one-time | | School Room, 2022 Exams (M) | $69.99 | one-time | | School Room, 2023 Exams (M) | $74.99 | one-time | | School Room, 2022 Exams (L) | $99.99 | one-time | | School Room, 2023 Exams (L) | $99.99 | one-time | ### PhysQuiz [App page](https://appshunter.io/ios/app/physquiz-aqa-gcse-physics/id1473746574) Practice AQA GCSE Physics with over 800 multiple-choice questions covering the entire syllabus. Includes revision notes, hints, and progress tracking to identify weak areas and boost your grade. Collectible physicist cards add a fun element to your learning journey. **Highlights:** 800+ multiple-choice questions, Revision notes, hints, and tips, Progress tracking, Identify weak areas, Collectible physicist cards, Designed for AQA GCSE Physics **In-app purchases (1)** | Purchase | Price | Billing | | --- | --- | --- | | PhysQuiz Pro | $3.99 | one-time | **What reviewers like** - 👍 Great UI and design - 👍 Very helpful for revision - 👍 Excellent for understanding topics - 👍 Easy to use - 👍 Good for GCSE and A-Level **What reviewers complain about** - 💰 Some content locked behind paywall - 🤔 Some questions are locked - 🤔 App setup can be confusing - 🤔 Lack of written questions **Requested features** - Make all content free - Add written questions - Develop full-screen iPad version - Break down units into sub-units - Branch out to maths quiz ## Frequently asked questions ### Is 23 Equations free? 23 Equations is free to download, with in-app purchases available. ### Is PhysQuiz free? PhysQuiz is free to download, with in-app purchases available. ### Which has better reviews, 23 Equations or PhysQuiz? 23 Equations is rated higher. 23 Equations averages 5.0 out of 5 from 1 ratings, while PhysQuiz averages 4.9 from 18 ratings. ### Do 23 Equations or PhysQuiz have ads? Neither 23 Equations nor PhysQuiz shows ads. ### Which is updated more often, 23 Equations or PhysQuiz? 23 Equations ships an update every 2 weeks, and PhysQuiz every 6 weeks. Most recently, 23 Equations was updated on October 12, 2026 and PhysQuiz on October 20, 2026. --- *Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*