Chemguy vs Studdy
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Over 200 video lessons
- Comprehensive classroom notes
- 1000+ practice problems
- 100+ interactive quizzes
- Unit exams
- Direct messaging support
Read full descriptionHide 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
Studdy
This AI-powered tutor assists students with homework by providing step-by-step explanations for math and science problems. It offers personalized tutoring, video tutorials, and practice problems to help improve understanding and grades.
- AI-powered step-by-step problem solver
- Photo scanning for homework problems
- Personalized 1:1 AI tutoring
- Video tutorials for complex topics
- Practice problem generation
- Graphing for visual understanding
Read full descriptionHide full description
Studdy makes learning easy - Your Personal AI Tutor. Join over 500,000 students who've boosted their grades with Studdy Buddy - the friendliest, easiest, and most accurate AI Tutor. Having an AI Study Buddy improves test scores. The average Studdy user increased their GPA by 1.3 points last year! If you struggle with solving math and science homework problems, Studdy is made for you. Studdy's friendly AI Tutor breaks down and explains any homework problem in an easy to understand way. Ask questions on any step that confuses you. Your personalized AI Tutor will help you understand at your own pace. How Students Study with Studdy Buddy - Scan a photo of a problem - see the step by step explanation broken down in easy to understand way with the AI Solver - Watch video tutorials - understand complicated topics with custom video explanations - Get 1:1 tutoring - take a 1:1 lesson to go deep on any subject you need help with - Graph problems out to understand them visually and build a deeper foundation - Generate practice problems to help you study Popular High School Subjects on Studdy - Algebra, Geometry, Trigonometry, Precalculus, Calculus, Chemistry, Physics Popular College Subjects on Studdy - Calculus I, Calc II, Calc III, Multivariable Calculus, Differential Equations, Linear Algebra, Probability and Statistics Free Plan - Scan 5 problems a day - Supports every subject & grade - Unlimited tutoring through chat Studdy Plus (subscription*) - Unlimited scans & chat - Video Tutorials - 1:1 Lessons with AI Tutor - Generate extra practice problems - Increased accuracy *Pricing starts at US $6.99 / week (price may vary by region). Payment is charged to your Apple ID and subscriptions renew automatically unless canceled 24 hours before the end of the period. Manage or cancel anytime in App Store settings. Got questions or suggestions? - Email us at http://studdy.ai/contact - Terms of Service: https://studdy.ai/terms-of-service - Privacy Policy: http://studdy.ai/privacy-policy
Screenshots
Verdict
The clearest difference is update cadence: Studdy at every 10 days against Chemguy's every 41 months. Studdy also leads on ratings volume (13K vs 4). Chemguy's advantage is monetization model (free vs freemium) and review sentiment (100% vs 89%). On price, rating, ads and in-app purchases 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. Chemguy sells 1 one-off in-app purchase and Studdy sells 8 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Chemguy holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Studdy has 13K ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 100% of Chemguy's written reviews are positive against 89% of Studdy's.
Chemguy ships an update every 41 months, Studdy every 10 days. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.
| Parameter | Chemguy | Studdy |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (4 ratings) — better | 4.8 (13K ratings) |
| Positive reviews | 100.0% of reviews — better | 89.3% of reviews |
| Number of ratings | 4 | 13K — better |
| Update frequency | Every 41 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 72 MB | 64 MB |
| Age rating | 4+ | 4+ |
| Developer | Rob Lederer | Studdy, LLC |
Customer experience
Chemguy
Studdy
Bugs and requests
Chemguy
Not enough reviews yet to summarise bugs or requests.
Studdy
Reported bugs
2 issues- Inconsistent performance across devices
- Freezing or crashing on certain devices
Requested features
3 requests- More free usage allowance
- Improved accuracy and reliability
- Enhanced user interface and navigation
In-app purchases
Chemguy
- Complete Chemguy Course EntryFree
Studdy
- Studdy Unlimited7 Days trial$1.997 Days
- Studdy Unlimited3 Days trial$1.997 Days
- Studdy Unlimited7 Days trial2 variants$6.997 Days
Show 5 moreShow fewer
- Studdy Unlimited3 Days trial2 variants$6.997 Days
- Studdy Unlimited3 Days trial$9.991 Month
- Studdy Unlimited7 Days trial$19.991 Month
- Studdy Unlimited3 Days trial$99.991 Year
- Studdy Unlimited7 Days trial$179.991 Year








