# Psych Boost vs Colour Adjuster

The clearest difference is in-app purchases: Colour Adjuster at none against Psych Boost's 2. Psych Boost's advantage is ads (none vs shown) and update cadence (every 2 weeks vs every 2 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Psych Boost sells 2 in-app purchases, starting at $3.99 per year. Colour Adjuster asks for nothing beyond the download.

Psych Boost ships an update every 2 weeks, Colour Adjuster every 2 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Psych Boost | Colour Adjuster |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 71.1% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 60 MB | 34 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Psych Boost LTD](https://appshunter.io/developer/1762053089) | [James Alvarez](https://appshunter.io/developer/1520407660) |

## What reviewers say

### Psych Boost

[App page](https://appshunter.io/ios/app/psych-boost/id6447265829)

This app aids A-Level and GCSE psychology students in revising core content for the AQA specification. Developed by a psychology teacher and YouTube channel creator, it offers structured learning and revision support.

**Highlights:** A-Level Psychology revision, GCSE Psychology revision, AQA specification content, Content by psychology teacher, Supports learning and revision

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Psych Boost Pro | $3.99 | per year |
| Psych Boost Pro | $3.99 | one-time |

**What reviewers like**

- 👍 Great for AQA A-level Psychology
- 💡 New update highlights tricky questions
- 💰 Good value subscription
- 🚀 Saves time on revision materials
- 💯 Highly recommended for revision

**What reviewers complain about**

- 🐛 Inconsistent cross-device compatibility
- 🐛 Content not detailed enough
- 🐛 Poorly worded questions
- 🐛 Typos and punctuation errors
- 🐛 Lacks depth in evaluations

**Reported bugs**

- App does not work on iPad
- Cannot get answers to questions on iPad quizzes
- Cannot scroll on iPad/Chromebook
- Bug with selecting quiz topics for GCSE
- App logs off after completing an activity/quiz

**Requested features**

- Option for other exam boards
- More bold updates
- Normal accounts for cross-device access
- Scroll button for flashcards/quizzes on all devices
- More questions to reduce repetition


### Colour Adjuster

[App page](https://appshunter.io/ios/app/colour-adjuster/id6752248094)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Psych Boost free?

Psych Boost is free to download, with in-app purchases available.

### Is Colour Adjuster free?

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

### Do Psych Boost or Colour Adjuster have ads?

Colour Adjuster shows ads; Psych Boost does not.

### Which is updated more often, Psych Boost or Colour Adjuster?

Psych Boost ships an update every 2 weeks, and Colour Adjuster every 2 months. Most recently, Psych Boost was updated on October 24, 2026 and Colour Adjuster on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*