# IQ Test Compact vs 3Satz! Rechner

The clearest difference is price: 3Satz! Rechner at Free against IQ Test Compact's $2.99. IQ Test Compact's advantage is in-app purchases (none vs 2) and review sentiment (81% vs 67%). On update cadence, ads, monetization model and device support there is nothing between them.

3Satz! Rechner is free to download; IQ Test Compact costs $2.99 up front. 3Satz! Rechner sells 2 in-app purchases, starting at $1.99 per month. IQ Test Compact asks for nothing beyond the download.

IQ Test Compact ships an update every 46 months, 3Satz! Rechner every 25 months. The most recent releases landed on November 6, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | IQ Test Compact | 3Satz! Rechner |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.6 (26 ratings)](https://appshunter.io/ios/app/iq-test-compact/id598613909/reviews)** | — |
| Number of ratings | **26** | — |
| Positive reviews | **80.9% of reviews** | 66.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 46 months | **Every 25 months** |
| Monetization | Paid | Paid |
| Size | 26 MB | 3 MB |
| Requires iOS | **8.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [the binary family](https://appshunter.io/developer/307768703) | [Sebastian Ueberwolf](https://appshunter.io/developer/1313264509) |

## What reviewers say

### IQ Test Compact

[App page](https://appshunter.io/ios/app/iq-test-compact/id598613909)

This app offers a scientifically designed IQ test to estimate your intelligence. It features 45 questions across 12 categories, testing memory, spatial perception, logic, and reasoning. The test takes under 30 minutes to complete and provides a detailed breakdown of results.

**Highlights:** Single-use IQ test design, 45 questions in 12 categories, Tests memory, spatial perception, logic, reasoning, Calculates IQ in under 30 minutes, Detailed results breakdown, History of IQ calculation

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

**In-app purchases:** none


### 3Satz! Rechner

[App page](https://appshunter.io/ios/app/3satz-rechner/id1313264510)

This app simplifies complex calculations using the rule of three. It's designed for quick and accurate problem-solving in various contexts.

**Highlights:** Rule of three calculations, Accurate problem-solving, Simple interface, Supports iOS devices

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3Satz! Pro – Monatsabo | $1.99 | per month |
| 3Satz! Pro – Jahresabo | $12.99 | per year |


## Frequently asked questions

### Is IQ Test Compact free?

IQ Test Compact costs $2.99, with no in-app purchases.

### Is 3Satz! Rechner free?

3Satz! Rechner is free to download, with in-app purchases available.

### Do IQ Test Compact or 3Satz! Rechner have ads?

Neither IQ Test Compact nor 3Satz! Rechner shows ads.

### Which is updated more often, IQ Test Compact or 3Satz! Rechner?

IQ Test Compact ships an update every 46 months, and 3Satz! Rechner every 25 months. Most recently, IQ Test Compact was updated on November 6, 2026 and 3Satz! Rechner on November 4, 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.*