Comparison

Element OTG vs Interactive Physics Simulator

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

Head to head
About

Element OTG

Features
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• Complete Periodic Table - All 118 elements with detailed information • Interactive Learning Center - Chemistry quizzes and symbol practice • Smart Search & Filter - Find elements by name, symbol, or properties • Dark Mode Support - Choose light, dark, or follow system theme • Responsive Design - Perfect for phones, tablets, and desktops

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
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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.

Screenshots

Element OTG4 screens
Interactive Physics Simulator4 screens

Verdict

The call

The clearest difference is price: Element OTG at Free against Interactive Physics Simulator's $4.99. Element OTG also leads on iOS requirement (13.0 vs 17.6). Interactive Physics Simulator's advantage is ads (none vs shown) and update cadence (weekly vs monthly). On in-app purchases and device support 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

Element OTG is free to download; Interactive Physics Simulator costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Element OTG ships an update monthly, Interactive Physics Simulator weekly. The most recent releases landed on September 12, 2026 and September 20, 2026 respectively.

Scorecard4 real differences · 6 level
Element OTG versus Interactive Physics Simulator: the parameters behind the verdict, then further details
ParameterElement OTGInteractive Physics Simulator
PriceFree — better$4.99
Rating—5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyMonthlyWeekly — better
AdsYesNo — better
In-app purchasesNoNo
Monetization—Paid
DevicesiPhone, iPad, iPodiPhone, iPad, Mac, Vision Pro — better
Requires iOS13.0 — better17.6
Further details — not scored
Size25 MB9 MB
Age rating4+4+
DeveloperJapality LimitedDietmar Henrich

In-app purchases

None

Element OTG

No in-app purchases

None

Interactive Physics Simulator

No in-app purchases

Questions

Is Element OTG free?
Element OTG is free to download, with no in-app purchases.
Is Interactive Physics Simulator free?
Interactive Physics Simulator costs $4.99, with no in-app purchases.
Do Element OTG or Interactive Physics Simulator have ads?
Element OTG shows ads; Interactive Physics Simulator does not.
Which is updated more often, Element OTG or Interactive Physics Simulator?
Element OTG ships an update monthly, and Interactive Physics Simulator weekly. Most recently, Element OTG was updated on September 12, 2026 and Interactive Physics Simulator on September 20, 2026.

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