Comparison

Hydraulic ToolKit 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

Hydraulic ToolKit

Perform essential hydraulic calculations for water infrastructure design on the go. This portable tool offers quick checks for engineers and students, covering common formulas for pipes, channels, and more.

Highlights
  • Perform 7 hydraulic formulas
  • Supports imperial and metric systems
  • Quick calculation checks
  • Portable tool for field use
  • Reference hydraulic coefficients
Read full description

Designing infrastructure that conveys and stores water relies on sound hydraulic calculations to determine where the flow goes, how deep it is, and how fast it’s moving for safe and efficient operations. From pipes and channels to weirs, orifices, and watersheds, engineers routinely apply hydraulic equations to size components and verify performance. Developed by Wade Trim engineers, the Hydraulic ToolKit app allows users to perform everyday hydraulic calculations anytime, anywhere. While software and spreadsheets are typically used to perform hydraulic calculations, the process often takes place using a computer in the office. This free app is a simple and portable tool to make quick calculations more convenient. Hydraulic coefficients required to perform the calculations can also be referenced. Common uses include verifying a basic hydraulic understanding during a meeting for a school or work project, or checking performance in the field during site observation or startup. Seven hydraulic formulas (Rational Formula, Rectangular Weir Formula, Circular Orifice Flow, Full Circular Pipe Flow, Velocity in a Circular Pipe, Trapezoidal Channel, Rectangular Conduit Full Flow) can be calculated using the imperial or metric system. The Hydraulic ToolKit app is intended for quick and basic calculation checks that do not replace detailed design analyses.

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.

Screenshots

Hydraulic ToolKit4 screens
Interactive Physics Simulator4 screens

Verdict

The call

The clearest difference is price: Hydraulic ToolKit at Free against Interactive Physics Simulator's $4.99. Hydraulic ToolKit also leads on iOS requirement (15.1 vs 17.6). Interactive Physics Simulator's advantage is update cadence (weekly vs monthly). On rating, ratings volume, 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

Hydraulic ToolKit 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.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Hydraulic ToolKit against 5.0 for Interactive Physics Simulator. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

Hydraulic ToolKit ships an update monthly, Interactive Physics Simulator weekly. The most recent releases landed on September 24, 2026 and October 10, 2026 respectively.

Scorecard4 real differences · 6 level
Hydraulic ToolKit versus Interactive Physics Simulator: the parameters behind the verdict, then further details
ParameterHydraulic ToolKitInteractive Physics Simulator
PriceFree — better$4.99
Rating5.0 (1 ratings)5.0 (1 ratings)
Positive reviews—100.0% of reviews
Number of ratings11
Update frequencyMonthlyWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPad, iPodiPhone, iPad, Mac, Vision Pro — better
Requires iOS15.1 — better17.6
Further details — not scored
Size23 MB9 MB
Age rating4+4+
DeveloperWade Trim Group, Inc.Dietmar Henrich

Customer experience

Hydraulic ToolKit

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Interactive Physics Simulator

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Hydraulic ToolKit

No in-app purchases

None

Interactive Physics Simulator

No in-app purchases

Questions

Is Hydraulic ToolKit free?
Hydraulic ToolKit 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.
Which has better reviews, Hydraulic ToolKit or Interactive Physics Simulator?
Hydraulic ToolKit and Interactive Physics Simulator are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do Hydraulic ToolKit or Interactive Physics Simulator have ads?
Neither Hydraulic ToolKit nor Interactive Physics Simulator shows ads.
Which is updated more often, Hydraulic ToolKit or Interactive Physics Simulator?
Hydraulic ToolKit ships an update monthly, and Interactive Physics Simulator weekly. Most recently, Hydraulic ToolKit was updated on September 24, 2026 and Interactive Physics Simulator on October 10, 2026.

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