Comparison

CPU8 Pro vs GoReviewMaster

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

GoReviewMaster

Enhance your Go code review expertise with practical quizzes covering linters, concurrency, and architecture. This app offers over 500 real-world questions across 9 difficulty levels to refine your skills and eliminate subjectivity in code reviews.

Highlights
  • Over 500 real-world Go code review questions
  • 9 learning levels from beginner to microservice design
  • Practical multiple-choice questions with code snippets
  • Review mode for incorrect answers
  • Automatic language switching (Japanese/English)
  • ChatGPT integration for concept understanding
Read full description

A quiz app that trains your Go code review. GoReviewMaster is built for Go engineers who review other people's code. It covers linter perspectives (golint, gosec, gocritic), concurrency, Clean Architecture, gRPC and DDD, in a format you can actually get through. Over five hundred practical questions take you from "this feels off" to a review comment with a reason behind it. It focuses on the things that trip people up in real work, the kind of detail a general-purpose AI tends to skate past. WHAT IS INSIDE - Nine difficulty levels, from beginner to microservice design - Multiple-choice questions built around real code - Review only what you got wrong, so weak spots close fast - Switches between English and Japanese automatically - Send a question to ChatGPT when you want it explained further Review standards tend to live in one person's head. Working through these together raises the floor for the whole team and gives new joiners something concrete to learn from. A little every day, and both your reviews and your code get sharper. ■ About subscriptions Subscriptions are charged to your Apple ID account and renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your device settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://fillapps.com/privacy/

Screenshots

CPU8 Pro4 screens
GoReviewMaster4 screens

Verdict

The call

The clearest difference is price: CPU8 Pro at Free against GoReviewMaster's $1.99. CPU8 Pro also leads on in-app purchases (none vs 2) and ads (none vs shown). GoReviewMaster's advantage is update cadence (every 10 days vs every 3 months). On rating, review sentiment, monetization model 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

CostPrice · In-app purchases · Ads · Monetization

CPU8 Pro is free to download; GoReviewMaster costs $1.99 up front. GoReviewMaster sells 2 in-app purchases, starting at $2.99 per month. CPU8 Pro asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for CPU8 Pro against 5.0 for GoReviewMaster. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

CPU8 Pro ships an update every 3 months, GoReviewMaster every 10 days. The most recent releases landed on October 5, 2026 and October 9, 2026 respectively.

Scorecard6 real differences · 4 level
CPU8 Pro versus GoReviewMaster: the parameters behind the verdict, then further details
ParameterCPU8 ProGoReviewMaster
PriceFree — better$1.99
Rating5.0 (3 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings3 — better1
Update frequencyEvery 3 monthsEvery 10 days — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.4 — better15.6
Further details — not scored
Size255 MB45 MB
Age rating4+4+
DeveloperCordova Bay Entertainment Group, IncSeiya.k

Customer experience

CPU8 Pro

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

GoReviewMaster

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

CPU8 Pro

No in-app purchases

2 purchases

GoReviewMaster

Subscriptions2
  • GoReviewMaster Pro (Monthly)3 Days trial$2.991 Month
  • GoReviewMaster Pro (Yearly)3 Days trial$17.991 Year

Questions

Is CPU8 Pro free?
CPU8 Pro is free to download, with no in-app purchases.
Is GoReviewMaster free?
GoReviewMaster costs $1.99, and also offers in-app purchases.
Which has better reviews, CPU8 Pro or GoReviewMaster?
CPU8 Pro and GoReviewMaster are both rated 5.0 out of 5 on the App Store, from 3 and 1 ratings respectively.
Do CPU8 Pro or GoReviewMaster have ads?
GoReviewMaster shows ads; CPU8 Pro does not.
Which is updated more often, CPU8 Pro or GoReviewMaster?
CPU8 Pro ships an update every 3 months, and GoReviewMaster every 10 days. Most recently, CPU8 Pro was updated on October 5, 2026 and GoReviewMaster on October 9, 2026.

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