Comparison

PROODOS 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

PROODOS

Features
Read full description

PROODOS, c'est le coaching scolaire nouvelle génération pour les lycéens de Première et Terminale, en Maths et Physique-Chimie. Deux univers, un seul objectif : ta réussite. • ÉLITE — un accompagnement sur mesure pour progresser au lycée et viser une mention au Bac. • CONCOURS — une préparation exigeante pour les concours d'ingénieurs. CE QUE PROODOS T'APPORTE • Tes cours en visio : rejoins tes séances d'un simple appui, avec ton groupe et ton professeur. • Tes notes en temps réel : suis ta moyenne et ta progression, matière par matière. • Tes devoirs : reçois-les, photographie ta copie et rends-la en un instant. • Ta bibliothèque : cours, exercices et corrigés en PDF, où que tu sois. • Ton coach, tout le temps : une question ? Ton coach te répond directement dans l'app. POUR LES PARENTS Suivez la scolarité de votre enfant en toute transparence : notes, présence, devoirs et objectifs réunis au même endroit, et échangez avec l'équipe PROODOS. POUR LES PROFESSEURS Gérez vos groupes, faites l'appel, donnez des exercices et suivez les rendus de vos élèves, directement depuis votre téléphone. Toute la scolarité, réunie dans une seule application, simple et élégante. Une question ? bonjour@proodos.fr

About

Physics Zen

This app provides focused, repeatable physics practice with generated problems and instant feedback. It covers 66 skills across 21 topics and offers exam preparation for various international curricula. Access theory and worked solutions directly within practice sessions.

Highlights
  • Generated physics problems
  • Instant answer checking
  • On-demand theory and solutions
  • Mastery progression system
  • Mistake journal for review
  • Visual aids for concepts
  • Offline functionality
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, accelerating and rotating frames, energy, momentum, centre of mass, rotation, circular motion, gravitation, oscillations and fluids • Electricity and Magnetism: electric fields, circuits and the Wheatstone bridge, capacitors, RC transients, magnetic fields and the Hall effect, 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, Compton scattering, black-body radiation, matter waves, X-rays, nuclear physics, particle physics and special relativity EXAM PREP Fifteen 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 • AP Physics C: Electricity and Magnetism, with calculus practice on Gauss's and Ampère's laws and RC, LR and LC circuits • NY Regents Physics, built on the Reference Tables • 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 • FSP Physik (Studienkolleg), for the Feststellungsprüfung at a German Studienkolleg • 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 thirteen languages: English, German, French, Spanish, Brazilian Portuguese, Dutch, Swedish, Norwegian, 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

PROODOS4 screens
Physics Zen4 screens

Verdict

The call

The clearest difference is in-app purchases: PROODOS at none against Physics Zen's 6. On price, update cadence, ads 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. Physics Zen sells 6 in-app purchases, starting at $3.99 per 7 days. PROODOS asks for nothing beyond the download.

UpkeepUpdate frequency

PROODOS ships an update every 2 days, Physics Zen every 3 days. The most recent releases landed on November 6, 2026 and November 8, 2026 respectively.

Scorecard1 real difference · 8 level
PROODOS versus Physics Zen: the parameters behind the verdict, then further details
ParameterPROODOSPhysics Zen
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 2 days — betterEvery 3 days
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better16.4
Further details — not scored
Size28 MB86 MB
Age rating4+4+
DeveloperS COURS ACADEMYIvan Terekhin

In-app purchases

None

PROODOS

No in-app purchases

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 PROODOS free?
PROODOS is free to download, with no in-app purchases.
Is Physics Zen free?
Physics Zen is free to download, with in-app purchases available.
Do PROODOS or Physics Zen have ads?
Neither PROODOS nor Physics Zen shows ads.
Which is updated more often, PROODOS or Physics Zen?
PROODOS ships an update every 2 days, and Physics Zen every 3 days. Most recently, PROODOS was updated on November 6, 2026 and Physics Zen on November 8, 2026.

Other comparisons