Comparison

SkyGO vs Physics Zen

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

Head to head
About

SkyGO

Features
Read full description

SKYREADY — PREPARE FOR PILOT SELECTION SkyReady is an all-in-one preparation app for aspiring pilots applying to airline cadet programs, pilot academies, flight schools and professional pilot positions. Prepare for the different stages of pilot selection — from aptitude and cognitive assessments to mathematics, spatial reasoning, multitasking and pilot interview preparation. PILOT APTITUDE TRAINING Build the skills commonly assessed during pilot selection: • Mental mathematics • Numerical reasoning • Spatial orientation • Memory • Attention and concentration • Multitasking • Logical reasoning • Reaction and processing speed • Coordination • Instrument interpretation • Speed, distance and time calculations PILOT INTERVIEW PREPARATION Aptitude tests are only one part of pilot selection. Prepare for pilot and cadet interviews with questions covering: • Motivation and career goals • Aviation knowledge • Competency-based questions • Situational questions • CRM and teamwork • Leadership and decision-making • Airline interview preparation TRAIN. MEASURE. IMPROVE. Practice under time pressure and monitor your performance. SkyReady helps you identify your strongest and weakest areas so you know exactly where to focus your preparation. Train repeatedly to improve: • Accuracy • Speed • Consistency • Cognitive performance • Confidence under pressure BUILT FOR FUTURE PILOTS SkyReady can help you prepare for: • Cadet pilot selection • Pilot academy entrance assessments • Airline pilot recruitment • Flight school aptitude tests • Pilot psychometric tests • Cognitive assessments • Pilot interviews • Airline selection processes Whether your first pilot assessment is weeks away or you're only beginning your journey toward the flight deck, SkyReady gives you one place to prepare. Train smarter. Be SkyReady. DISCLAIMER SkyReady is an independent educational and training application. It is not affiliated with, endorsed by, or an official assessment product of any airline, flight school, pilot academy or assessment provider.

About

Physics Zen

Features
Read full description

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

Screenshots

SkyGO4 screens
Physics Zen4 screens

Verdict

The call

The clearest difference is update cadence: Physics Zen at every 2 days against SkyGO's monthly. Physics Zen also leads on iOS requirement (16.4 vs 18.6). On price, ads, 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

Both are free to download. SkyGO sells 2 in-app purchases, starting at $9.99 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.

UpkeepUpdate frequency

SkyGO ships an update monthly, Physics Zen every 2 days. The most recent releases landed on October 16, 2026 and October 24, 2026 respectively.

Scorecard2 real differences · 4 level
SkyGO versus Physics Zen: the parameters behind the verdict, then further details
ParameterSkyGOPhysics Zen
PriceFreeFree
Update frequencyMonthlyEvery 2 days — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.616.4 — better
Further details — not scored
Size4 MB82 MB
Age rating4+4+
DeveloperNikita PetrovIvan Terekhin

In-app purchases

2 purchases

SkyGO

Subscriptions2
  • SkyGo Pro — Monthly$9.991 Month
  • SkyGo Pro — 6 Months$24.996 Months
6 purchases

Physics Zen

Subscriptions3
  • Physics Zen Weekly$3.997 Days
  • Physics Zen Monthly$6.991 Month
  • Physics Zen Annual3 Days trial$29.991 Year
One-time3
  • Physics Zen Lifetime$24.99
  • Physics Zen Lifetime$29.99
  • Physics Zen Lifetime$39.99

Questions

Is SkyGO free?
SkyGO is free to download, with in-app purchases available.
Is Physics Zen free?
Physics Zen is free to download, with in-app purchases available.
Do SkyGO or Physics Zen have ads?
Neither SkyGO nor Physics Zen shows ads.
Which is updated more often, SkyGO or Physics Zen?
SkyGO ships an update monthly, and Physics Zen every 2 days. Most recently, SkyGO was updated on October 16, 2026 and Physics Zen on October 24, 2026.

Other comparisons