Comparison

Chemguy vs Gas Compressor AR

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

Head to head
About

Chemguy

Master high school, AP, IB, and first-year university chemistry with over 200 video lessons, comprehensive notes, and over 1000 practice problems. Interactive quizzes and unit exams reinforce learning, with direct messaging support for personalized help.

Highlights
  • Over 200 video lessons
  • Comprehensive classroom notes
  • 1000+ practice problems
  • 100+ interactive quizzes
  • Unit exams
  • Direct messaging support
Features
Read full description

The Chemguy App has arrived! I'm Rob Lederer and I taught chemistry for 35 years. I've taught all high school levels of chemistry, including AP Chemistry and IB Chemistry, too! Since 2003, I have been known as Chemguy to the students outside of my classroom. My Chemguy YouTube videos have millions of views. The Chemguy App that I have personally built has distilled my teaching career into a course that completely covers high school chemistry, AP and IB material, and first year university chemistry. Everything is covered: The Periodic Table, Compounds and Reactions, Stoichiometry, Solutions, Gases, Atomic Theory, Chemical Bonding, Molecular Shapes, Energy, Electrochemistry, Chemical Equilibrium, Acids and Bases, Organic Chemistry, Chemical Kinetics, Thermodynamics, and Calculating Uncertainty Values. Phew! This is what you get in the Chemguy App: 1. Over 200 video lessons, where I teach all the chemistry principles, give detailed explanations, and problem-solve through all the calculations in every unit of study. 2. My entire classroom note package. All the material explained, with tables and diagrams and pictures. At the end of each lesson there are practice problems, over 1000 in all, to hone your chemistry skills. 3. Tests! I have made close to 100 interactive quizzes for all the lessons and summary unit exams, too! That's a total of over 1000 questions to practice! 4. Chemguy Messaging. After going through all of the above, is there still something that you need help with? Send me a text in the chat function of the app! Let's talk about it! So, watch the videos, read the notes, do the practice problems, have fun with the quizzes, and cap each unit off with the exam. And if something is bugging you, chemistry-wise, send me a message and let's chat about it! If you want to know more about me, what I've done and what I continue to do, please visit my website, roblederer.ca

About

Gas Compressor AR

Read full description

This augmented reality application helps users understand the working principles of a gas compressor through interactive 3D visualization. Users can place and explore a detailed compressor model in their real environment, view internal components using transparent, exploded, and cut-section modes, and observe gas flow, pressure, and temperature changes through animated simulations. Designed for intuitive, self-paced learning, the app is suitable for students, educators, and professionals seeking a clear and engaging way to learn how gas compressors operate.

Screenshots

Chemguy4 screens
Gas Compressor AR4 screens

Verdict

The call

The clearest difference is in-app purchases: Gas Compressor AR at none against Chemguy's 1. Gas Compressor AR also leads on update cadence (every 3 weeks vs every 41 months). On price, ads, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Chemguy sells 1 one-off in-app purchase. Gas Compressor AR asks for nothing beyond the download.

UpkeepUpdate frequency

Chemguy ships an update every 41 months, Gas Compressor AR every 3 weeks. The most recent releases landed on October 15, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 8 level
Chemguy versus Gas Compressor AR: the parameters behind the verdict, then further details
ParameterChemguyGas Compressor AR
PriceFreeFree
Rating5.0 (4 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings4 — better—
Update frequencyEvery 41 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size72 MB294 MB
Age rating4+4+
DeveloperRob Ledererinfivr

In-app purchases

1 purchases

Chemguy

One-time1
  • Complete Chemguy Course EntryFree
None

Gas Compressor AR

No in-app purchases

Questions

Is Chemguy free?
Chemguy is free to download, with in-app purchases available.
Is Gas Compressor AR free?
Gas Compressor AR is free to download, with no in-app purchases.
Do Chemguy or Gas Compressor AR have ads?
Neither Chemguy nor Gas Compressor AR shows ads.
Which is updated more often, Chemguy or Gas Compressor AR?
Chemguy ships an update every 41 months, and Gas Compressor AR every 3 weeks. Most recently, Chemguy was updated on October 15, 2026 and Gas Compressor AR on October 31, 2026.

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