# IQ Test vs Three Acid

The clearest difference is device support: IQ Test at 3 against Three Acid's —. Three Acid's advantage is iOS requirement (12.0 vs 15.0). On price and in-app purchases there is nothing between them.

Both are free to download. IQ Test sells 11 in-app purchases, starting at $3.99 per month and Three Acid sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | IQ Test | Three Acid |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (8K ratings)](https://appshunter.io/ios/app/iq-test-intelligence-quiz/id1347362487/reviews)** | — |
| Number of ratings | **8K** | — |
| Positive reviews | 34.8% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | — |
| Update frequency | Every 6 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 66 MB | 158 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [Paul Stelzer](https://appshunter.io/developer/644648487) | [Jochen Seehuber](https://appshunter.io/developer/1798500478) |

## What reviewers say

### IQ Test

[App page](https://appshunter.io/ios/app/iq-test-intelligence-quiz/id1347362487)

Engage in a free IQ test and brain-training exercises designed to boost cognitive skills. Scientifically developed, this app offers various tasks to improve processing speed, memory, and logical thinking. Compare your scores with friends and track your progress.

**Highlights:** Free IQ test, Brain booster tasks, Exercise mode with solutions, Compare results with friends, Improves logical thinking, Enhances working memory

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

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| IQ Test Pro | $3.99 | per month |
| IQ Test Pro Year | $19.99 | per year |
| Remove Ads | $0.99 | one-time |
| Complete Statistics | $0.99 | one-time |
| Premium 3 | $3.99 | one-time |
| Premium 1 | $3.99 | one-time |
| Explanations | $4.99 | one-time |
| Premium Plus Young people | $5.99 | one-time |
| Pro Forever | $8.99 | one-time |
| Pro Forever Super Sale | $17.99 | one-time |
| Pro Forever | $29.99 | one-time |

**What reviewers like**

- 🤔 Challenging and engaging
- 💡 Interesting concept for an IQ app
- 👍 Good for brain exercise

**What reviewers complain about**

- 🐛 Grammatical errors and poor translations
- 💸 Paywall for answers and explanations
- 🤯 Confusing and unclear instructions
- 🤖 Inaccurate or inconsistent IQ scoring

**Reported bugs**

- Questions with no logical correct answer
- Inability to see questions/content properly
- Crashes and freezes during tests

**Requested features**

- Improved English language support
- More detailed explanations for questions
- Ability to review past performance
- Pause/resume functionality


### Three Acid

[App page](https://appshunter.io/ios/app/three-acid/id6742457198)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Three Acid Full Version | $0.99 | one-time |


## Frequently asked questions

### Is IQ Test free?

IQ Test is free to download, with in-app purchases available.

### Is Three Acid free?

Three Acid is free to download, with in-app purchases available.

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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.*