23 Equations vs Physics
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
23 Equations
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.
- 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
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For Students: Learn by heart all of the Physics equations you need for your GCSE and IGCSE, then use them to answer questions, with help available at every step. Questions are made by “smart models” so they can show you examples and help you in other ways. They can also show you a model answer afterwards to help you improve next time. Even if you don’t have to learn the equations, you will do better if you know them by heart and can remember the correct units for each variable. Calculations are still going to make up at least 30% of the Physics exams so the better you know the equations, the better your grade is going to be. Get this app and have a virtual pack of index cards always at your fingertips. All the important information is there, including the units. Click on the Q and try practice questions to test yourself. Start a game and try and beat the clock. The questions get harder the better you do. For Teachers: Actively set the tests for your students to take. Monitor, analyse and view the answers your students give for these tests without any marking to do. Use the information to plan future lessons or setup further tests to help with revision. This is great for homework and for revision programmes leading up to exams. This is the School Room and is available through an in-app purchase. Privacy: In the free section of the app, no data is collected about you or your activity at all. The School Room section uses information provided by your teachers to allow you to log in. This means a one-way encrypted email address. You cannot be personally identified from this information.
Physics
This interactive reference app provides a comprehensive collection of physics terms, formulas, and calculators. It's designed to help users prepare for tests and Olympiads by offering clear explanations, interactive tables, and internal search functionality.
- 280+ physics terms and definitions
- 250+ categorized physics formulas
- 180+ interactive calculators
- Interactive tables for knowledge assimilation
- Internal search for terms and formulas
- Convenient in-app navigation
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“Physics - Formulas and Calculators” is an interactive reference book of terms, formulas and tables. In the reference book you will find theory, terms and formulas divided into categories. Each formula contains a concise description as well as variable designations. With our app you will be able to prepare for physics tests or Olympiads. In this app we have collected for you: - 280+ terms, words and phrases that are characteristic designations for the term; - 250+ formulas that are categorized by the main sections of physics; - 180+ calculators that will help you at any time. With their help you will cope with any problem, equation or example; - A collection of interactive tables, with the help of which you can: informally assimilate the topic, consciously work with educational literature and independently eliminate gaps in knowledge; - Internal search by terms and formulas; - Convenient navigation in the application. “Physics - Formulas and Calculators” will help you: 1. Prepare for a lesson, exam or Olympiad at any time; 2. Deepen your knowledge in your favorite subject; 3. Learn formulas in physics; 4. Understand and memorize new terms and their meanings; 5. Recall or find the correct formula; 6. Solve any problem with our calculators. Prepare for exams and Olympiads with your mobile. Now you have a new tool that will help you more than once on a test, practical work or in preparation for exams.
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Verdict
The clearest difference is review sentiment: Physics at 100% against 23 Equations's 48%. Physics also leads on ratings volume (18 vs 1). 23 Equations's advantage is rating (5.0 vs 4.7) and update cadence (every 2 weeks vs every 2 months). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. 23 Equations sells 7 one-off in-app purchases and Physics sells 4 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
23 Equations holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Physics has 18 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 48% of 23 Equations's written reviews are positive against 100% of Physics's, so the app with the better star average is not the one people write more warmly about.
23 Equations ships an update every 2 weeks, Physics every 2 months. The most recent releases landed on September 26, 2026 and October 1, 2026 respectively.
| Parameter | 23 Equations | Physics |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.7 (18 ratings) |
| Positive reviews | 47.6% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 | 18 — better |
| Update frequency | Every 2 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 9.3 — better | 17.0 |
| Further details — not scored | ||
| Size | 143 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Nick Whitehurst | Nikita Chernykh |
Customer experience
23 Equations
Physics
In-app purchases
23 Equations
- Individual: Extra features$1.99
- School Room, 2022 Exams (S)$39.99
- School Room, 2023 Exams (S)$39.99
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- School Room, 2022 Exams (M)$69.99
- School Room, 2023 Exams (M)$74.99
- School Room, 2022 Exams (L)$99.99
- School Room, 2023 Exams (L)$99.99
Physics
- Professional 1 Month$1.991 Month
- Professional 6 Month$6.996 Months
- Professional 12 Month$14.991 Year
- Professional - unlimited$24.99









