AtomicTiles vs Photronium
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AtomicTiles
Explore the fundamental building blocks of matter. This interactive tool allows students to understand atomic structure and how atoms bond to form molecules. Visualize valence electrons and their role in chemical bonding through an engaging learning experience.
- Explore atomic structure (protons, neutrons, electrons)
- Understand valence electrons and covalent bonding
- Visualize how atoms form molecules
- Interactive exploration of molecular structures
- Learn about the properties of elements and the periodic table
Read full descriptionHide full description
Introducing Atomic Tiles: an Exploration of Atoms and Molecules, designed by Dr. Seth Bush, Assistant Professor, Department of Chemistry, Cal Poly University, specializing in Chemical Education and developed by Dr. Fred Ventura, Ventura Educational Systems. Atoms are nature's building blocks. Everything is made of atoms. Atomic Tiles is an active learning tool where students explore how atoms come together to form molecules. Using Atomic Tiles students begin to understand the structure of atoms. Students learn that an atom has a dense inner core called the nucleus that contains protons and neutrons. The outer layer of an atom contains the electrons called the electron cloud. Most chemical properties properties of atoms, including how atoms bond to one another, are the result of the outermost electrons in the 'electron cloud' known as valence electrons. Atomic Tiles depicts valence electrons as open or closed circles, similar to Lewis Dots. Open circles are electrons that can be shared to form bonds. Closed circles are electrons that are not shared. Targeted Development of Science Concepts in the Following Areas: Atomic Structure - Neutrons, Protons and Electrons Valence Electrons - Covalent Bonding Properties of Elements - The Periodic Table of Elements Building Molecules - An Interactive Exploration of Molecular Structures
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.
- 360+ physics equations
- Offline access
- Intelligent Search
- Symbol Search
- Customizable quizzes
- Bookmarking
Read full descriptionHide 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.
Screenshots
Verdict
The clearest difference is price: Photronium at Free against AtomicTiles's $3.99. Photronium also leads on update cadence (monthly vs every 19 months) and ratings volume (8 vs 1). AtomicTiles's advantage is in-app purchases (none vs 1). On rating, 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
Photronium is free to download; AtomicTiles costs $3.99 up front. Photronium sells 1 one-off in-app purchase. AtomicTiles asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for AtomicTiles against 5.0 for Photronium. That said, the two scores are not equally well evidenced: Photronium has 8 ratings behind it against 1, so its average is the more settled of the two.
AtomicTiles ships an update every 19 months, Photronium monthly. The most recent releases landed on September 25, 2026 and September 18, 2026 respectively.
| Parameter | AtomicTiles | Photronium |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 5.0 (1 ratings) | 5.0 (8 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 8 — better |
| Update frequency | Every 19 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPad, Mac | iPhone, iPad |
| Requires iOS | 15.6 — better | 16.4 |
| Further details — not scored | ||
| Size | 9 MB | 59 MB |
| Age rating | 4+ | 4+ |
| Developer | Ventura Educational Systems | Hao Nguyen |
Customer experience
AtomicTiles
Photronium
In-app purchases
AtomicTiles
No in-app purchases
Photronium
- Multicolored Bookmarks$0.99
Questions
Is AtomicTiles free?
Is Photronium free?
Which has better reviews, AtomicTiles or Photronium?
Do AtomicTiles or Photronium have ads?
Which is updated more often, AtomicTiles or Photronium?
Other comparisons















