Comparison

Photronium vs Physics Lessons,Topics

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

Head to head
About

Photronium

Access over 360 physics equations with clear explanations and powerful search tools. Test your knowledge with custom quizzes and learn offline anywhere, anytime. This educational reference is designed for learners of all levels.

Highlights
  • 360+ physics equations
  • Offline access
  • Intelligent Search
  • Symbol Search
  • Customizable quizzes
  • Bookmarking
Read full description

With over 360 physics equations explained in a clear, easy-to-understand way and a flexible search system, Photronium can be an immensely helpful tool for learners of any level. PHYSICS AT YOUR FINGERTIPS Look up any physics equation, with topics including: • Motion in One Dimension • Projectile Motion • Laws of Motion • Uniform Circular Motion • Work and Energy • Linear Momentum and Collisions • Rotation of Rigid Bodies • Universal Gravitation • Fluid Mechanics • Oscillatory Motion • Wave Motion • Sound Waves • Thermodynamics • Electromagnetism • Light and Optics • Relativity • Quantum Physics All available offline, so you can learn anywhere, anytime. MEMORY QUIZ Test your knowledge by taking quizzes! Bookmark any section that interests you, and Photronium will automatically create quizzes based on those bookmarks. INTELLIGENT SEARCH & SYMBOL SEARCH Just type anything. Intelligent Search can work with the most ambiguous descriptions, like “atom”, “lens”, “radiation”, “Newton”, and “phase angle”. And when you need to find a physics formula without any description, Symbol Search provides a discovery experience you’ve never seen before. FREE & NO ADS Photronium comes with over 360 physics equations, Intelligent Search, Symbol Search, Widgets, Bookmarks, Suggested Websites, and Dark Mode all available for free and ad-free. With Extras, you can purchase more features and support the app’s development. Have questions or feedback? From the app, open Extras and send a report.

About

Physics Lessons,Topics

Master physics concepts with this comprehensive study companion. It offers detailed definitions, step-by-step explanations, formulas, quizzes, and flashcards for over 200 topics. Learn at your own pace, track progress, and study offline.

Highlights
  • 200+ physics topics covered
  • Detailed definitions and explanations
  • Practice quizzes with instant feedback
  • Flashcards for efficient memorization
  • Progress tracking
  • Offline access
Features
Read full description

Learn physics in an easy and interactive way. Physics Lessons, Topics is your complete guide to mastering physics concepts, from the basics to advanced topics. Explore detailed definitions, step-by-step explanations, real-world applications, and key formulas for every topic. Test your understanding with quizzes and reinforce learning through flashcards designed for quick revision. Whether you are a student preparing for exams, a teacher looking for teaching aids, or an enthusiast refreshing your knowledge, this app covers everything from mechanics and thermodynamics to quantum physics and cosmology. Features: • Well-structured lessons for 200+ physics topics • Clear definitions and detailed explanations • Related formulas for quick reference • Key terms and common misconceptions • Practice quizzes with instant feedback • Flashcards for efficient memorization • Progress tracking to monitor your learning • Works offline for study anytime, anywhere Master physics at your own pace and improve your understanding with an all-in-one study companion. Privacy Policy: https://owlspeak.web.app/privacy Terms of Use: https://owlspeak.web.app/terms

Screenshots

Photronium4 screens
Physics Lessons,Topics4 screens

Verdict

The call

The clearest difference is ads: Photronium at none against Physics Lessons,Topics's shown. Photronium also leads on update cadence (monthly vs every 2 months) and ratings volume (8 vs 2). Physics Lessons,Topics's advantage is iOS requirement (12.0 vs 16.4). On price, rating, in-app purchases and monetization model 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. Photronium sells 1 one-off in-app purchase and Physics Lessons,Topics sells 4 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Photronium against 5.0 for Physics Lessons,Topics. Both are backed by a comparable volume of ratings — 8 and 2 respectively.

UpkeepUpdate frequency

Photronium ships an update monthly, Physics Lessons,Topics every 2 months. The most recent releases landed on September 18, 2026 and July 18, 2026 respectively.

Scorecard4 real differences · 6 level
Photronium versus Physics Lessons,Topics: the parameters behind the verdict, then further details
ParameterPhotroniumPhysics Lessons,Topics
PriceFreeFree
Rating5.0 (8 ratings)5.0 (2 ratings)
Positive reviews100.0% of reviews—
Number of ratings8 — better2
Update frequencyMonthly — betterEvery 2 months
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.412.0 — better
Further details — not scored
Size59 MB39 MB
Age rating4+4+
DeveloperHao NguyenAli Umer

Customer experience

Photronium

All ratings8 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Physics Lessons,Topics

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Photronium

One-time1
  • Multicolored Bookmarks$0.99
4 purchases

Physics Lessons,Topics

Subscriptions3
  • Physics Lessons3 Days trial$4.997 Days
  • Physics Lessons$6.991 Month
  • Physics Lessons$29.991 Year
One-time1
  • Physics Lessons$49.99

Questions

Is Photronium free?
Photronium is free to download, with in-app purchases available.
Is Physics Lessons,Topics free?
Physics Lessons,Topics is free to download, with in-app purchases available.
Which has better reviews, Photronium or Physics Lessons,Topics?
Photronium and Physics Lessons,Topics are both rated 5.0 out of 5 on the App Store, from 8 and 2 ratings respectively.
Do Photronium or Physics Lessons,Topics have ads?
Physics Lessons,Topics shows ads; Photronium does not.
Which is updated more often, Photronium or Physics Lessons,Topics?
Photronium ships an update monthly, and Physics Lessons,Topics every 2 months. Most recently, Photronium was updated on September 18, 2026 and Physics Lessons,Topics on July 18, 2026.

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