OS Interview Questions vs CPU8 Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OS Interview Questions
Learn fundamental operating system concepts and interview questions with this educational app. It offers a user-friendly interface to explore topics, save favorites, and customize your reading experience. Sharpen your technical knowledge for career advancement.
- Operating system overview
- Functions of operating systems
- Types of operating systems
- Embedded OS interview questions
- User-friendly interface
- Personalized library for favorites
- Customizable themes and fonts
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The OS Interview Questions app will teach you all the basics of operating system interview questions with answers. OS (Operating System) is basically system software that manages computer hardware and software resources. Since everything is automated and technology has risen, having technical knowledge would help us to exceed in our career. In the OS app, we get to learn about operating system overview, functions of operating systems, OS definition, types of operating systems, popular operating systems, embedded OS interview questions, and concepts of operating systems. FEATURES OF THE APP: • The OS interview questions app has a very user-friendly interface. You just have to open the app and select any topic you want to learn about, and all the answers will be displayed. • The app has a separate folder called "Library”, which can be used as a personal reading list of topics you wish to learn in the future and can also add to favourites any topic you enjoyed and loved learning. • Themes and Fonts can be customised according to your reading style. • The app's main motive is to sharpen the user's IQ with all operating system overview.
CPU8 Pro
Explore the inner workings of modern computers with a simulated 8-bit processor. Learn about computer history, use a visual model to execute programs, and assemble your own code.
- Simulated 8-bit computer model (Intel 8085 based)
- History of computing content
- Assembler manual and reference
- Visual execution model of programs
- Integrated assembler for creating programs
- Links to Ben Eater's building instructions
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CPU8 Pro is part of a family of simulated computers that teach about the inner workings of modern computers. From the basic CPU8 App to the enhanced CPU8 Plus App and now the CPU8 Pro, these apps provide a easy to use reference point to the inner-most operations of computers. CPU8 Pro is based on a simplified model of the Intel 8085 (or SAP-3 “Simple As Possible” level 3) that is a subset of the computer that brought computing to the masses. It’s heritage stems from the work of Ben Eater, the creator of the wonderful 8-bit breadboard computer that is popular on YouTube and other sites. CPU8 Pro contains: A history of computing with details about computers through the ages. This material will hopefully form a base from which a more detailed examination of specific topics can be gleaned. Reference material, including links to all of the Ben Eater videos providing step-by-step building instructions. A full Assembler Manual plus a shortened reference summary directly in the assembler module. A visual model of the operation of the computer as it executes programs that you can create or modify. The model supports 256 addressable spaces (words), ALU, Program Counter, Accumulator, Address Register, Instruction Register, Bus Indicator, Stack Pointer, Registers B, D and M, plus displays for Program Status Word, Microcode Phase, Flags and a 7-segment Display. An assembler to take source code and create executable programs that you can “run” on your simulated computer. The assembler is quite sophisticated and supports about 70 instructions and pseudo instructions. Hopefully, this will enhance the learning process for you and provide new information about how computers work! Suitable for classroom study, independent study or just for the sheer enjoyment of playing with a computer that you can watch and learn from. No personal individual information is accessed.
Screenshots
Verdict
The clearest difference is rating: CPU8 Pro at 5.0 against OS Interview Questions's 1.0. CPU8 Pro also leads on in-app purchases (none vs 1) and ads (none vs shown). On price and device support 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. OS Interview Questions sells 1 one-off in-app purchase. CPU8 Pro asks for nothing beyond the download.
CPU8 Pro holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 3 respectively.
OS Interview Questions ships an update every 95 months, CPU8 Pro every 3 months. The most recent releases landed on October 12, 2026 and October 5, 2026 respectively.
| Parameter | OS Interview Questions | CPU8 Pro |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 3 — better |
| Update frequency | Every 95 months | Every 3 months — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 | 12.4 — better |
| Further details — not scored | ||
| Size | 16 MB | 255 MB |
| Age rating | 4+ | 4+ |
| Developer | RAVINDHIRAN SUMITHRA | Cordova Bay Entertainment Group, Inc |
Customer experience
OS Interview Questions
CPU8 Pro
In-app purchases
OS Interview Questions
- OS Interview Questions$3.99
CPU8 Pro
No in-app purchases
Questions
Is OS Interview Questions free?
Is CPU8 Pro free?
Which has better reviews, OS Interview Questions or CPU8 Pro?
Do OS Interview Questions or CPU8 Pro have ads?
Which is updated more often, OS Interview Questions or CPU8 Pro?
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