Physics Formulas vs Diagram Explainer
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Physics Formulas
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PhysRef is the complete physics formula reference designed for students, engineers, and science enthusiasts. Access hundreds of formulas, physical constants, and built-in calculators - all without internet connection. COMPREHENSIVE FORMULA DATABASE Browse formulas organized by topic: Mechanics, Thermodynamics, Waves, Electricity and Magnetism, Optics, and Modern Physics. Each formula includes variable definitions, units, and related concepts. BUILT-IN CALCULATORS Stop doing manual calculations. Enter your known values and instantly compute the unknown variable. Every calculator validates inputs and displays results with appropriate units. PHYSICAL CONSTANTS TABLE Quick access to fundamental constants including speed of light, gravitational constant, Planck's constant, electron mass, Boltzmann constant, and dozens more. All values use standard reference data. UNIT CONVERTER Convert between units across 14 categories: length, mass, time, velocity, acceleration, force, energy, power, pressure, temperature, electric charge, electric current, angle, and frequency. PERSONAL NOTES Add your own notes to any formula. Perfect for exam prep, recording problem-solving strategies, or marking formulas you find tricky. FORMULA DERIVATIONS Understand where formulas come from. See step-by-step derivations that connect fundamental principles to the equations you use. WORKS COMPLETELY OFFLINE All content is bundled in the app. Study on airplanes, in basements, or anywhere without signal. No account required. No internet needed. DESIGNED FOR STUDENTS Covers content from AP Physics 1, AP Physics 2, AP Physics C, IB Physics, and introductory university physics courses. Whether you are preparing for an exam or solving homework problems, PhysRef has you covered. PRIVACY FIRST Your data stays on your device. We do not collect personal information. No tracking. No analytics. No ads. FEATURES SUMMARY - Formula browser organized by physics topic - Search by formula name, variable, or concept - Calculators for solving problems - Physical constants with precise values - Unit converter with 14 categories - Personal notes on any formula - Formula derivations and explanations - Related formulas and connections - Bookmarks for quick access - Search history - Dark and light themes - 100% offline functionality Built for physics students who want a reliable, ad-free reference that works anywhere. Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Diagram Explainer
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Diagram Explainer: Homework AI is a powerful AI-powered learning assistant designed to help students, teachers, and professionals understand complex diagrams with ease. Simply scan any diagram, image, or visual content, and the app will instantly break it down into simple, structured explanations. Whether you're studying biology, physics, chemistry, engineering, or working with technical diagrams, this app helps you learn faster and smarter. Key Features: AI Diagram Understanding: Scan any diagram and get instant, accurate explanations powered by advanced AI. Homework Helper: Struggling with school work? Use the app to understand diagrams and complete homework faster. Smart Diagram Analysis: Breaks down complex visuals into simple steps so you can easily understand concepts. Study Notes Generator: Automatically converts diagram content into easy-to-read study notes. Works with Multiple Subjects: Supports biology diagrams, physics diagrams, chemistry charts, engineering schematics, and more. Easy to Use: Just take a picture or upload an image and get instant explanations. Perfect for Students & Teachers: Ideal for revision, exam preparation, and classroom learning support. Why Choose Diagram Explainer?: Traditional learning methods make it hard to understand complex diagrams. This app turns visual information into clear explanations, helping you save time and improve understanding. With AI-powered analysis, Diagram Explainer acts like a personal tutor available 24/7. Use Cases: * Homework help for students * Quick revision before exams * Understanding science and engineering diagrams * Converting visuals into study notes * Learning support for teachers and educators Privacy Policy: https://eclixtech.com/terms-service Terms of Service: https://eclixtech.com/terms-service Support link: https://eclixtech.com/contact
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Verdict
The clearest difference is ads: Physics Formulas at none against Diagram Explainer's shown. On price, update cadence, in-app purchases and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Physics Formulas sells 2 in-app purchases, starting at $3.99 per 7 days and Diagram Explainer sells 4 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.
Physics Formulas ships an update every 2 months, Diagram Explainer every 3 months. The most recent releases landed on October 20, 2026 and October 25, 2026 respectively.
| Parameter | Physics Formulas | Diagram Explainer |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months β better | Every 3 months |
| Ads | No β better | Yes |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac β better |
| Requires iOS | 15.1 | 15.0 β better |
| Further details β not scored | ||
| Size | 38 MB | 99 MB |
| Age rating | 4+ | 4+ |
| Developer | Mobin Akhter | EclixTech UK LTD |
In-app purchases
Physics Formulas
- Weekly Access$3.997 Days
- Lifetime Access$49.99
Diagram Explainer
- Monthly Subscription$6.991 Month
- Monthly Subscription$7.991 Month
- Yearly Subscription$29.991 Year
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- Yearly Subscription$44.991 Year
Questions
Is Physics Formulas free?
Is Diagram Explainer free?
Do Physics Formulas or Diagram Explainer have ads?
Which is updated more often, Physics Formulas or Diagram Explainer?
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