787 ECL vs Physics Zen
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
787 ECL
This app provides offline electronic checklists for B787 and B777 aircraft, designed for pilots and aviation enthusiasts. It offers an interactive way to study procedures and aircraft systems for training and self-study purposes.
- Offline Electronic Checklists
- Normal and Non-Normal Checklists
- Interactive QRH/ECL Logic Study
- Simulator Preparation
- Self-Study Tool
- Long-Haul Downtime Review
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This application is designed for B787 and B777 pilots and aviation enthusiasts. Important Notice This app is intended for educational and training purposes only. It is not an operational tool and must not be used for real-world flight operations. What This App Offers A complete Electronic Checklist (ECL) experience presented offline Access to Normal and Non-Normal checklists without an internet connection An interactive way to study and understand QRH/ECL logic and flows Ideal for simulator preparation, self-study, and long-haul downtime All checklists are available offline, allowing you to review procedures anytime, anywhere—perfect for long sectors and simulator preparation. This app is designed to enhance procedural understanding and familiarity with aircraft systems in a safe, educational environment. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Wishing you safe flights and effective training!
Physics Zen
This app provides focused, repeatable physics practice with generated problems and instant feedback. Access theory and worked solutions as needed to master concepts across various topics and exam boards.
- Generated physics problems
- Instant answer checking
- On-demand theory and solutions
- Mistake journal for review
- Visual aids for concepts
- Offline functionality
- Multiple exam paths
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Physics Zen turns physics into focused, repeatable practice. Work through fresh generated problems, check your answer instantly, and open the theory or worked solution exactly when you need it. A COMPLETE PHYSICS PATH Practice 66 skills across 21 topics: • Mechanics: motion, projectiles, forces and friction, energy, momentum, centre of mass, rotation, circular motion, gravitation, oscillations and fluids • Electricity and Magnetism: electric fields, circuits, capacitors, RC transients, magnetic fields, induction, inductance and AC • Waves and Optics: wave graphs, sound, interference, reflection, refraction, lenses and diffraction • Thermodynamics: heat, gas laws, kinetic theory, entropy, engines and renewable energy • Modern Physics: photons, matter waves, X-rays, nuclear physics, particle physics and special relativity EXAM PREP Twelve exam paths, each built from the topics its exam actually tests: • AP Physics 1, AP Physics 2 and AP Physics C: Mechanics, with free-response items that give follow-through marks • A-Level Physics, with required-practical data analysis: tables, gradients and uncertainties • HKDSE Physics (Hong Kong) • Abitur Physik, with fine-beam tube and Wien filter labs • French Bac physics, including Newton's law of cooling and the telescope; chemistry and the practical assessment are not included • Japan's University Entrance Common Test in Physics and Basic Physics, with digit-cell answers • Korea's CSAT (Suneung) Physics I, and the physics part of CSAT Integrated Science from 2028 • Taiwan's Advanced Subjects Test (分科測驗) Physics, which also covers the physics in the GSAT (學測) science paper • Board-specific gravity conventions Every item is original practice, not an official exam paper. BUILT FOR PRACTICE Generated Problems: Practise fresh parameter combinations across multiple difficulty levels. Mastery Progression: A five-level bucket system moves from foundations to multi-step problems as you demonstrate understanding. Theory Beside the Problem: Open concise explanations, formulas and worked examples without leaving your session. Mistake Journal: Wrong answers are saved automatically. Retry the same concept later with fresh numbers. Visual Physics: Graphs, force diagrams, circuits, waves, rays, energy levels and fluid scenes support the problems that need them. Offline First: The curriculum and generator work without an internet connection. Optional sign-in adds cross-device sync. Focused Interface: No ads, no coins and no lives. Includes light and dark themes. Content is available in twelve languages: English, German, French, Spanish, Brazilian Portuguese, Dutch, Swedish, Japanese, Simplified Chinese, Traditional Chinese, Korean and Russian. HOW IT WORKS 1. Choose a section, topic or exam path. 2. Solve a generated problem at your current level. 3. Check your answer and read the worked solution. 4. Build mastery and return to mistakes that need another pass. Most skills are free, and Kinematics is free end to end. Premium unlocks the last skill of each topic, the exam-prep paths and detailed statistics. Subscription and lifetime options are shown in the app with local pricing before purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel them in your App Store account settings. Privacy Policy: https://physics-zen.com/privacy Terms of Service: https://physics-zen.com/terms Support: contacts@trifoiltrailblazer.com
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Verdict
The clearest difference is rating: Physics Zen at 5.0 against 787 ECL's 1.0. Physics Zen also leads on update cadence (every 2 days vs monthly). On price, 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
Both are free to download. 787 ECL sells 3 in-app purchases, starting at $1.99 per month and Physics Zen sells 6 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Physics Zen holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
787 ECL ships an update monthly, Physics Zen every 2 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.
| Parameter | 787 ECL | Physics Zen |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 1 | 1 |
| Update frequency | Monthly | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 | 16.4 — better |
| Further details — not scored | ||
| Size | 5 MB | 84 MB |
| Age rating | 4+ | 4+ |
| Developer | Mohamed Farhadi | Ivan Terekhin |
Customer experience
787 ECL
Physics Zen
In-app purchases
787 ECL
- B787 ECL$1.991 Month
- B787 ECL$12.991 Year
- B787 ECL - Life Time$59.99
Physics Zen
- Physics Zen Weekly$3.997 Days
- Physics Zen Monthly$6.991 Month
- Physics Zen Annual3 Days trial$29.991 Year
- Physics Zen Lifetime$24.99
- Physics Zen Lifetime$29.99
- Physics Zen Lifetime$39.99









