# Fluid IQ test vs Predink

The clearest difference is in-app purchases: Fluid IQ test at none against Predink's 2. Fluid IQ test also leads on update cadence (every 4 days vs fortnightly). Predink's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Predink sells 2 in-app purchases, starting at $2.99 per 7 days. Fluid IQ test asks for nothing beyond the download.

Fluid IQ test ships an update every 4 days, Predink fortnightly. The most recent releases landed on October 4, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Fluid IQ test | Predink |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 4 days** | Fortnightly |
| Monetization | Ad-supported | — |
| Size | 49 MB | 113 MB |
| Requires iOS | 15.3 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Milan Matlak](https://appshunter.io/developer/1816754092) | [Dgit App](https://appshunter.io/developer/6782068698) |

## What reviewers say

### Fluid IQ test

[App page](https://appshunter.io/ios/app/fluid-iq-test/id6746418590)

This app offers a non-verbal, culture-fair IQ test inspired by Raven's progressive matrices. It measures fluid intelligence and abstract thinking through a series of increasingly complex pattern-completion questions. Results provide an approximate IQ score based on correct answers and age.

**Highlights:** Non-verbal abstract thinking assessment, Measures fluid intelligence (Gf), Pattern recognition and problem-solving, Culture-fair test design, Gradually increasing question complexity, Results based on correct answers and age

**Features:** macOS Compatibility

**In-app purchases:** none


### Predink

[App page](https://appshunter.io/ios/app/predink/id6782068696)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly subscription | $2.99 | per 7 days |
| Monthly subscription | $8.99 | per month |


## Frequently asked questions

### Is Fluid IQ test free?

Fluid IQ test is free to download, with no in-app purchases.

### Is Predink free?

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

### Do Fluid IQ test or Predink have ads?

Fluid IQ test shows ads; Predink does not.

### Which is updated more often, Fluid IQ test or Predink?

Fluid IQ test ships an update every 4 days, and Predink fortnightly. Most recently, Fluid IQ test was updated on October 4, 2026 and Predink on October 6, 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.*