Comparison

Interactive Physics Simulator vs PhiStruct

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

Head to head
About

Interactive Physics Simulator

Explore over 100 real-time physics simulations across 38 modules, covering classical, modern, quantum, and medical physics. Visualize complex phenomena with adjustable parameters, formulas, and immediate visual feedback. Ideal for students and educators seeking an interactive learning laboratory.

Highlights
  • 100+ interactive simulations
  • 38 physics modules
  • Real-time parameter control
  • Adjustable sliders with visual feedback
  • Formulas and numerical results displayed
  • Quiz mode for testing understanding
  • Support for 12 languages
Read full description

Physics Simulator transforms your iPad and iPhone into an interactive physics laboratory with 38 modules and over 100 real-time simulations. WHAT'S NEW IN VERSION 3.3 • New Animations: Radiation Therapy, Laser Physics, Biophysics (Ion Flow) • Enhanced visualizations: Relativity Time Dilation, Ultrasound Charts • Added support for 2 new languages: Russian and Portuguese (Total 12) • Performance optimization: ~15% faster rendering • 100+ interactive simulations in 38 physics modules COMPREHENSIVE PHYSICS COVERAGE Classical Physics: Explore mechanics with projectile motion, pendulums, and spring oscillators. Study thermodynamics, wave phenomena, and oscillations with interactive visualizations. Electromagnetism & Optics: Visualize electric fields, capacitors, and circuits. Experiment with lenses, telescopes, and diffraction patterns. Modern Physics: Discover the Bohr atomic model, quantum tunneling, and radioactive decay. View 3D hydrogen orbital animations and explore electron orbital shapes (s, p, d). Quantum Mechanics: Visualize electron orbitals in 3D with color-coded wave function phases. Choose between s, p, and d orbitals with all subtypes (px, py, pz, dz², dxz, dyz, dx²-y², dxy). Medical Physics: Professional-grade simulations for MRI (Bloch equations, T1/T2 relaxation, k-space), CT (Radon transform, filtered backprojection), ultrasound with Doppler imaging, Radiation Therapy (Dose Distribution), and nuclear medicine (SPECT, PET). Emerging Fields: Biophysics, Plasma Physics, Geophysics, Particle Physics, Laser Physics, Nanotechnology, Superconductivity, Cosmology, and Gravitational Waves. Advanced Topics: Relativity, chaos theory with Lorenz attractors, celestial mechanics with eclipse simulations, fluid dynamics, acoustics, and astrophysics including gravitational lensing. KEY FEATURES • 100+ interactive simulations with real-time parameter control • Adjustable sliders with immediate visual feedback • Formulas and numerical results displayed alongside animations • Quiz mode to test your understanding • Universal app optimized for iPhone and iPad • Support for 12 languages (English, German, French, Spanish, Italian, Chinese, Japanese, Korean, Hindi, Indonesian, Portuguese, Russian) PERFECT FOR • University physics courses • Medical physics education • High school physics classes • Self-study and exam preparation • Teaching demonstrations All simulations are designed for educational purposes and provide clear, scientifically accurate visualizations of physical phenomena.

About

PhiStruct

Features
Read full description

PhiStruct is a touch-first ball-and-strut geometry builder: you don't just view finished shapes — you construct them. Tap a connector ball, tap a glowing hole, and place a strut. Keep going until you've assembled Platonic solids, Archimedean solids, golden-ratio forms, and more. Struts are never allowed to pass through each other, so every model is physically buildable on your desk. On iPhone and iPad, place a finished model on a table in AR. Mac has no table AR — mouse, trackpad, and menus only. WHY IT'S DIFFERENT • Hands-on construction, hole by hole — like a strut kit in your pocket • Collision-proof builds: if it builds in the app, it builds in real life • Exact φ (golden ratio) math — zero drift • Fully offline. No account. No ads. No subscription. WHAT YOU CAN DO • Free build — pick color and length, tap holes, invent your own models • Guided builds — step through 134 curated polyhedra (flat shapes, prisms, Platonic and Archimedean solids, quasicrystal geometry) with the next hole highlighted, or complete instantly • Reference ghost — a translucent target to build alongside freehand • Parts list — color × length × count for sorting or buying real struts • Export PNG, full-color GLB (Blender / AR / web), or centered STL for 3D printing • Save and reopen exact project files, including .vZome from desktop vZome WHO IT'S FOR • Makers and 3D-printing hobbyists who want to verify a build before printing • Math teachers preparing a polyhedra lesson — walk through it step by step • Geometry lovers who want to make something, not just look at it One-time purchase. Your projects stay on your device unless you export them.

Screenshots

Interactive Physics Simulator4 screens
PhiStruct4 screens

Verdict

The call

The clearest difference is price: PhiStruct at Free against Interactive Physics Simulator's $4.99. Interactive Physics Simulator's advantage is in-app purchases (none vs 1) and update cadence (weekly vs every 2 weeks). On 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

CostPrice · In-app purchases · Ads · Monetization

PhiStruct is free to download; Interactive Physics Simulator costs $4.99 up front. PhiStruct sells 1 one-off in-app purchase. Interactive Physics Simulator asks for nothing beyond the download.

UpkeepUpdate frequency

Interactive Physics Simulator ships an update weekly, PhiStruct every 2 weeks. The most recent releases landed on November 12, 2026 and November 13, 2026 respectively.

Scorecard3 real differences · 7 level
Interactive Physics Simulator versus PhiStruct: the parameters behind the verdict, then further details
ParameterInteractive Physics SimulatorPhiStruct
Price$4.99Free — better
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyWeekly — betterEvery 2 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPad, Mac, Vision Pro — betteriPhone, iPad, Mac
Requires iOS17.616.0 — better
Further details — not scored
Size9 MB6 MB
Age rating4+4+
DeveloperDietmar Henrich箫 王

In-app purchases

None

Interactive Physics Simulator

No in-app purchases

1 purchases

PhiStruct

One-time1
  • PhiStruct Complete$14.99

Questions

Is Interactive Physics Simulator free?
Interactive Physics Simulator costs $4.99, with no in-app purchases.
Is PhiStruct free?
PhiStruct is free to download, with in-app purchases available.
Do Interactive Physics Simulator or PhiStruct have ads?
Neither Interactive Physics Simulator nor PhiStruct shows ads.
Which is updated more often, Interactive Physics Simulator or PhiStruct?
Interactive Physics Simulator ships an update weekly, and PhiStruct every 2 weeks. Most recently, Interactive Physics Simulator was updated on November 12, 2026 and PhiStruct on November 13, 2026.

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