Fluid IQ test vs Predink
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Fluid IQ test
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.
- 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
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What does this test measure? This test is motivated by Raven's progressive matrices that got their name according to their creator John C. Raven, who developed them in 1936 as a non-verbal test of abstract thinking. It is a ‘culture fair’ multiple choice IQ test, that measures your fluid intelligence (Gf) – your reasoning and problem solving ability. Fluid intelligence is a core component of (g) – your general intelligence. This test tests the understanding of the complexity of patterns, the ability to store and retrieve information. It provides insight into the ability to observe, solve problems and learn. The test measures only a subset of intellectual abilities. Based on this, valid conclusions can not be drawn about the overall intelligence of the person, the results are approximate. How does it work? The test consists of 54 questions which in turn are gradually more complex. Respondents choose geometric shapes to properly complete larger images. The result of the test is determined by the number of correct answers and the age of the respondent. However, the final score is not linearly related to the number of correct answers. The evaluation of the test is based on a study of a large sample of anonymous results of users of the app in different age categories and is continuously refined. The results are distributed on the so-called Gaussian curve into several percentile intervals on an overall scale from 0 to 160 intelligence quotient points, with the majority of the population according to the Gaussian curve (i.e. over 50%) corresponds to IQ values between 90 and 110. Advantages and Disadvantages • The advantage of the test is its non-verbal nature, which avoids cultural and linguistic discrepancies. • The disadvantage of the test is that repeating it may improve the result.
Predink
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Predink transforms a simple gesture into a mystical and poetic experience. Shake your phone: based on your movement, Predink generates a unique inkblot, inspired by the famous Rorschach tests. Each shake—its rhythm, force, and direction—shapes a form that no one else will ever see. Then the oracle takes the stage. Predink interprets your blot and delivers a three-part reading: • a poetic description of what the shape evokes, • a symbolic interpretation of what it reveals about your present moment, • a benevolent prediction for the days ahead. A UNIQUE EXPERIENCE EVERY TIME No two smudges are alike. Your gesture becomes a fingerprint; your shape becomes a mirror. YOUR PERSONAL HISTORY Find all your smudges and their meanings in your personal journal, and observe how your readings evolve over time. PREDINK PRO Upgrade to Predink Pro to unlock all meanings without limits and explore the oracle as often as you like. The subscription renews automatically; it will continue unless canceled at least 24 hours before the end of the current period. Manage and cancel your subscription in your App Store account settings. FOR ENTERTAINMENT PURPOSES ONLY Predink is designed for entertainment, self-reflection, and the joy of discovery. The interpretations are in no way intended as medical, psychological, legal, or financial advice. Shake. Discover. Let it speak. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://dgitapp.com/predink-privacy.html
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Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Fluid IQ test | Predink |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| Update frequency | Every 4 days — better | Fortnightly |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.3 | 15.0 — better |
| Further details — not scored | ||
| Size | 49 MB | 113 MB |
| Age rating | 4+ | 4+ |
| Developer | Milan Matlak | Dgit App |
In-app purchases
Fluid IQ test
No in-app purchases
Predink
- Weekly subscription$2.997 Days
- Monthly subscription$8.991 Month









