# 23 Equations vs UKUniApp

The clearest difference is review sentiment: 23 Equations at 48% against UKUniApp's 0%. 23 Equations also leads on update cadence (every 2 weeks vs every 5 weeks) and iOS requirement (9.3 vs 15.6). UKUniApp's advantage is in-app purchases (none vs 7). 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. UKUniApp asks for nothing beyond the download.

23 Equations ships an update every 2 weeks, UKUniApp every 5 weeks. The most recent releases landed on June 1, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | 23 Equations | UKUniApp |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/23-equations/id1451090127/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | **47.6% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 5 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 143 MB | 34 MB |
| Requires iOS | **9.3** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nick Whitehurst](https://appshunter.io/developer/1451090126) | [UK University Search](https://appshunter.io/developer/1433645489) |

## 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 |


### UKUniApp

[App page](https://appshunter.io/ios/app/ukuniapp/id6450947731)

This app helps students, parents, and educators maximize their experience at the UK University & Apprenticeship Search Fair. It provides free tickets, exhibitor information, seminar videos, and tools to check UCAS scores and browse open days.

**Highlights:** Free ticket/QR code generation, Exhibitor scanning for information, Event updates and notifications, Digital brochure access, Seminar video playback, Exhibitor directory, UCAS score checker, Open days calendar

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

**In-app purchases:** none


## Frequently asked questions

### Is 23 Equations free?

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

### Is UKUniApp free?

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

### Do 23 Equations or UKUniApp have ads?

Neither 23 Equations nor UKUniApp shows ads.

### Which is updated more often, 23 Equations or UKUniApp?

23 Equations ships an update every 2 weeks, and UKUniApp every 5 weeks. Most recently, 23 Equations was updated on June 1, 2026 and UKUniApp on September 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.*