atom.sim vs Atomizer AR
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
atom.sim
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A simulation of the anatomy of atoms. This app shows the first 18 atoms in 3d detail, provides info about the anatomy of these atoms and shows how empty an atom is. Ideal for students in mid school and high school.
Atomizer AR
Explore the quantum world with interactive 3D models of atoms and molecules in augmented reality. Visualize atomic and molecular orbitals, and sketch organic compounds to instantly generate their nomenclature.
- 3D atomic and molecular orbital visualization
- Augmented reality integration
- Hartree-Fock computational method for MOs
- Sketch organic compounds
- Automatic SMILES and IUPAC nomenclature generation
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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
Verdict
The clearest difference is in-app purchases: atom.sim at none against Atomizer AR's 4. Atomizer AR's advantage is update cadence (every 2 weeks vs every 6 weeks) and device support (6 vs 3). On price, ads 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
Both are free to download. Atomizer AR sells 4 in-app purchases, starting at $1.99 per month. atom.sim asks for nothing beyond the download.
atom.sim ships an update every 6 weeks, Atomizer AR every 2 weeks. Both last shipped on October 24, 2026.
| Parameter | atom.sim | Atomizer AR |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.0 (3 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 3 — better |
| Update frequency | Every 6 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac, Apple Watch, Vision Pro — better |
| Requires iOS | 15.0 — better | 15.2 |
| Further details — not scored | ||
| Size | 79 MB | 137 MB |
| Age rating | 4+ | 4+ |
| Developer | Hans Kovi | Wonmo Seong |
In-app purchases
atom.sim
No in-app purchases
Atomizer AR
- Californium Pass$1.991 Month
- Californium Pass$2.991 Month
- Einsteinium Pass$3.991 Year
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- Einsteinium Pass$6.991 Month








