# IQ – quiz for iOS — Test your knowledge!

> Technical interview preparation and developer knowledge testing app. (iPhone/iPad app by Viktor Grushevskiy.)

- Source: https://appshunter.io/ios/app/iq-quiz-for-ios/id6503102657 (this page in markdown: same URL + `.md`)
- Developer: [Viktor Grushevskiy](https://appshunter.io/developer/599506768)
- Category: Developer Tools, Education
- Price: Free
- Rating: 4.70/5 from 9 App Store ratings · 12 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.0 · 14 MB
- Languages: American English, Russian
- Released: 2024-06-10
- Data updated: 2026-08-24
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/iq-quiz-for-ios/id6503102657/reviews.md

## What is IQ?

Multithreading, memory, architecture. New AI mode based on Foundation Models, hardcore challenges, and global rankings.

Are you preparing for a Middle/Senior interview or just want to keep your brain in shape?

I've collected and packaged everything that's asked in technical interviews into one app and added a powerful task generation engine.

What's inside?

Fundamentals: hardcore questions on topics to think about.

Multithreading: GCD, Operations, Actors, data races.

Memory management: ARC subtleties, retain cycles, and much more.

Algorithms: From Big O to trees and graphs.

Architectures: Breaking down MVC, MVVM, VIPER, TCA.

Compiler and runtime: How Swift works under the hood.

Infinite task generator 

The main feature of the update is Dynamic Mode. The app generates unique cases and questions in real time. This allows you to not only memorize the correct answer, but also to truly understand how a particular technology works by encountering new formulations each time.

Training modes

Time sprint: Live coding stress simulation. Learn to think fast.

One mistake: “First mistake” mode. For those who are confident they know the documentation by heart.

Progress and Rating 

Detailed statistics will show your weak areas (for example, if you are good at UI but struggle with algorithms). 

And the global leaderboard will help you compare your grade with other developers in the community.

Adjust the difficulty to suit yourself, choose topics, and download skills.

## Key features

- AI-powered dynamic question generation
- Hardcore technical interview questions
- Multithreading, memory, and architecture topics
- Algorithm and compiler/runtime knowledge
- Time sprint and one mistake training modes
- Detailed progress statistics
- Global leaderboards

## Recent user reviews (10 of 12)

All indexed reviews: https://appshunter.io/ios/app/iq-quiz-for-ios/id6503102657/reviews.md

### 5/5 — Приложение пушка, рекомендую!

*2025-10-28, version 1.302*

Все отлично, автор постоянно добавляет что-то новое. Если бы еще когда-нибудь база знаний тут появилось, то смело за деньги можно было бы выставлять приложение!

### 5/5 — Спасибо за труд!

*2025-09-20, version 1.302*

Вдохновляешь развиваться, и расти. Шейринг опытом очень важен.

### 1/5 — Странное

*2025-08-03, version 1.301*

Идея хорошая. Реализация через одно место

### 5/5 — Полезно!

*2025-07-21, version 1.301*

Рекомендую

### 4/5 — Добавьте синхронизацию между девайсами

*2024-09-23, version 1.02*

Приложение классное, интересно проходить вопросы, но не хватает синхронизации прогресса. Перепутаны кнопки регистарация и авторизация. Скачал прилу на айфон, почему-то видимо нажал войти, а не зарегистрироваться, зашел под своей учеткой эппл. Потом скачал прилу на айпад, но при попытке войти получал ошибку, что такой пользователь уже существует. Решил проверить телрию, что логика кнопок перепутана и при нажатии зарегистрироваться - зашел в свой профиль

### 5/5 — Супер

*2024-08-03, version 1.02*

Просто супер и дизайн и вопросы, спасибо разработчику!

### 4/5 — Супер, но не хватает просмотра результатов

*2024-06-17, version 1.01*

Приложение супер, но не хватает просмотра результатов тестов

### 4/5 — Больше информации

*2024-06-17, version 1.01*

Отличная задумка, но очень сыро, что ты где-то ответил неправильно и никак не можешь узнать где, идея приложения пока основана на том чтобы соревноваться, а не учиться, поэтому новичкам не подойдет
Учимся мы как правило и на ошибках, а тут у тебя нет никакой информации о них

### 5/5 — Отличное приложение

*2024-06-16, version 1.01*

Хотелось бы понимать какой правильный ответ, при прохождении тестов

### 5/5 — Понравилось

*2024-06-13, version 1.01*

Было бы круто сделать раздел-справочник/базу знаний по вопросам квиза

## Frequently asked questions about IQ

### What is IQ – quiz for iOS?

IQ – quiz for iOS is a free application designed to help developers prepare for technical interviews and enhance their knowledge of core programming concepts. It offers a variety of quiz modes and covers topics like multithreading, memory management, algorithms, and architecture.

### What kind of questions does IQ – quiz for iOS ask?

The app features hardcore questions covering fundamental programming topics. These include multithreading (GCD, Operations, Actors), memory management (ARC, retain cycles), algorithms (Big O, trees, graphs), and software architectures (MVC, MVVM, VIPER, TCA).

### Does IQ – quiz for iOS have ads?

No, IQ – quiz for iOS does not contain advertisements. It is a completely ad-free experience for users.

### How does the AI mode in IQ – quiz for iOS work?

The AI mode uses Foundation Models to generate unique cases and questions in real time. This dynamic approach ensures you encounter new formulations each time, promoting deeper understanding rather than simple memorization of answers.

### What training modes are available in IQ – quiz for iOS?

IQ – quiz for iOS offers two main training modes: 'Time sprint' for live coding stress simulation to improve thinking speed, and 'One mistake' mode for those confident in their documentation knowledge.

### Can I track my progress with IQ – quiz for iOS?

Yes, the app provides detailed statistics that highlight your weak areas, allowing you to focus your learning. You can also compare your performance with other developers on a global leaderboard.

### What devices is IQ – quiz for iOS compatible with?

IQ – quiz for iOS is compatible with both iPhone and iPad devices, making it accessible for a wide range of Apple users.

### How often is IQ – quiz for iOS updated?

The latest version of IQ – quiz for iOS is 1.303, and it was last updated on December 30, 2025. This indicates a commitment to ongoing development and feature additions.

## Version history (last 5 releases)

### 1.303 — 2025-12-30

New section, under the hood of Foundation Models Engine

I wrote a generative module based on Foundation Models. Now the application is not limited to a static database — in theory, it can generate dozens of unique topics and questions on the fly (and combinations thereof)

### 1.302 — 2025-09-20

New modes and questions

### 1.301 — 2025-02-24

Improved the design, expanded the question base on existing topics, added a new one.
Now available to view statistics of each participant of the leaderboard.
Changed some sections inside, expanded hardcore mode, longer distance

### 1.02 — 2024-07-01

History!!! You can now look at your own (and the correct answers) after each section, and read the explanations if you need to. Blocks with links and useful materials have been added to some questions.

### 1.01 — 2024-06-11

Thank you for your reviews of the app, feedback (which includes describing some of the issues).
What's in this version?
- Updated the leaderboard, added explicit indication of rank.
- Optimized synchronization.
- Fixed a few typos in the questions.
- Updated content in some topics and added preparation for future releases (with highlighting of correct answers).

Special thanks to the channel readers who took their time and pointed out what needed to be fixed.

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All apps by Viktor Grushevskiy: https://appshunter.io/developer/599506768

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-24.*