Comparison

Photronium vs Atomizer AR

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

Atomizer AR

Visualize atomic and molecular orbitals in 3D, render electron density clouds, and explore molecules in augmented reality. Calculate molar mass, balance equations, and sketch molecules in 2D.

Highlights
  • 3D atomic and molecular orbital visualization
  • Electron density cloud rendering
  • WebXR augmented reality exploration
  • Molecule control via gyroscope
  • Molar mass calculation
  • Equation balancing and stoichiometry
  • 2D molecule sketching
Features
Read full description

Atomizer AR turns your iPhone or iPad into a portable quantum chemistry lab. Visualize atomic and molecular orbitals in 3D, render electron density clouds, and step into immersive WebXR augmented reality where molecules sit on your desk at real-world scale. — WHAT YOU CAN DO — • Explore atomic orbitals computed from real hydrogenic wavefunctions: 1s, 2p, 3d, 4f and beyond, with adjustable shell glow and Bohmian trajectory animation. • View any molecule's molecular orbitals (HOMO, LUMO, intermediates) computed via PySCF on the cloud, then rendered as interactive isosurfaces. • See ball-and-stick models in WebXR augmented reality. Tap "View in AR", point at a flat surface, place the molecule on a table, then pinch to scale and drag to rotate. • Pair your phone with the desktop using Atomizer Remote: enter a 4-letter code, then tilt your phone to control the on-screen molecule with your gyroscope. Live preview streams back to your phone in real time. • Browse 40+ molecules — water, glucose, caffeine, benzene, ammonia, ethanol, methane, sulfuric acid and more — with energy diagrams, dipole arrows, lone pairs (VSEPR) and MO correlation diagrams. • Calculate molar mass live from any chemical formula, including parenthesised groups like Ca(OH)₂ and (NH₄)₂SO₄, with per-element breakdown. • Balance equations, run stoichiometry, sketch molecules in 2D, and explore reaction pathways. — SUBSCRIPTIONS — Free: 5 molecule renders per period. All calculator tools and full periodic table. Californium Pass — $2.99/month. 50 renders monthly, priority compute queue. Einsteinium Pass — $6.99/month. Unlimited renders, GLTF export for AR/3D printing, protein visualization, priority support. Auto-renews unless cancelled at least 24 hours before the period ends. Cancel anytime in Settings → Apple ID → Subscriptions. Subscriptions sync across iPhone, iPad, and electronvisual.org. Privacy: https://electronvisual.org/privacy Terms: https://electronvisual.org/terms

Screenshots

Photronium4 screens
Atomizer AR4 screens

Verdict

The call

The clearest difference is rating: Photronium at 5.0 against Atomizer AR's 4.0. Photronium also leads on ratings volume (10 vs 3). Atomizer AR's advantage is update cadence (every 10 days vs monthly) and device support (6 vs 2). On price, review sentiment, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Photronium sells 1 one-off in-app purchase and Atomizer AR sells 4 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Photronium holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 10 and 3 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Photronium ships an update monthly, Atomizer AR every 10 days. Both last shipped on November 3, 2026.

Scorecard4 real differences · 6 level
Photronium versus Atomizer AR: the parameters behind the verdict, then further details
ParameterPhotroniumAtomizer AR
PriceFreeFree
Rating5.0 (10 ratings) — better4.0 (3 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings10 — better3
Update frequencyMonthlyEvery 10 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPadiPhone, iPad, iPod, Mac, Apple Watch, Vision Pro — better
Requires iOS16.415.2 — better
Further details — not scored
Size59 MB137 MB
Age rating4+4+
DeveloperHao NguyenWonmo Seong

Customer experience

Photronium

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

Atomizer AR

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Photronium

One-time1
  • Multicolored Bookmarks$0.99
4 purchases

Atomizer AR

Subscriptions4
  • Californium Pass$4.991 Month
  • Einsteinium Pass$12.991 Month
  • Californium Yearly7 Days trial$39.991 Year
Show 1 more
  • Einsteinium Yearly7 Days trial$99.001 Year

Questions

Is Photronium free?
Photronium is free to download, with in-app purchases available.
Is Atomizer AR free?
Atomizer AR is free to download, with in-app purchases available.
Which has better reviews, Photronium or Atomizer AR?
Photronium is rated higher. Photronium averages 5.0 out of 5 from 10 ratings, while Atomizer AR averages 4.0 from 3 ratings.
Do Photronium or Atomizer AR have ads?
Neither Photronium nor Atomizer AR shows ads.
Which is updated more often, Photronium or Atomizer AR?
Photronium ships an update monthly, and Atomizer AR every 10 days. Most recently, Photronium was updated on November 3, 2026 and Atomizer AR on November 3, 2026.

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