# Physics Formulas Lite vs 23 Equations

The clearest difference is review sentiment: Physics Formulas Lite at 86% against 23 Equations's 48%. Physics Formulas Lite also leads on in-app purchases (none vs 7) and ratings volume (60 vs 1). 23 Equations's advantage is update cadence (every 2 weeks vs every 4 months) and rating (5.0 vs 4.6). On price, ads and device support there is nothing between them.

Both are free to download. 23 Equations sells 7 one-off in-app purchases. Physics Formulas Lite asks for nothing beyond the download.

23 Equations holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Physics Formulas Lite has 60 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 86% of Physics Formulas Lite's written reviews are positive against 48% of 23 Equations's, so the app with the better star average is not the one people write more warmly about.

Physics Formulas Lite ships an update every 4 months, 23 Equations every 2 weeks. The most recent releases landed on September 23, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Physics Formulas Lite | 23 Equations |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (60 ratings)](https://appshunter.io/ios/app/physics-formulas-lite/id814896887/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/23-equations/id1451090127/reviews)** |
| Number of ratings | **60** | 1 |
| Positive reviews | **85.7% of reviews** | 47.6% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 43 MB | 143 MB |
| Requires iOS | 15.1 | **9.3** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NSC CO. PTY LTD](https://appshunter.io/developer/579522076) | [Nick Whitehurst](https://appshunter.io/developer/1451090126) |

## What reviewers say

### Physics Formulas Lite

[App page](https://appshunter.io/ios/app/physics-formulas-lite/id814896887)

Quickly access and reference physics formulas for study and work. Features include calculation tools, multi-language support, a favorites folder, and formula sharing. Search and add custom formulas and tools.

**Highlights:** Formula reference by category, In-app calculation tools, Multi-language support, Favorites folder for quick access, Formula sharing functionality, Searchable formula database, Add custom formulas and tools

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Physics Formulas Lite free?

Physics Formulas Lite is free to download, with no in-app purchases.

### Is 23 Equations free?

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

### Which has better reviews, Physics Formulas Lite or 23 Equations?

23 Equations is rated higher. Physics Formulas Lite averages 4.6 out of 5 from 60 ratings, while 23 Equations averages 5.0 from 1 ratings.

### Do Physics Formulas Lite or 23 Equations have ads?

Neither Physics Formulas Lite nor 23 Equations shows ads.

### Which is updated more often, Physics Formulas Lite or 23 Equations?

Physics Formulas Lite ships an update every 4 months, and 23 Equations every 2 weeks. Most recently, Physics Formulas Lite was updated on September 23, 2026 and 23 Equations on September 26, 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.*