Comparison

Dotty 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

Dotty

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YOUR TRACE, YOUR PACE Dotty brings together handwriting practice, reading and drawing activities in a single app designed to adapt to every learner. HANDWRITING PRACTICE Practice cursive or print handwriting with adjustable guide lines and dotted tracing worksheets. ACCESSIBLE READING Choose between standard reading and OpenDyslexic, with customizable settings designed to improve comfort and readability. READING, WRITING AND DRAWING WORKSHEETS Enjoy a growing collection of activities, illustrated worksheets and exercises that make learning more visual, engaging and fun. APPLE PENCIL SUPPORT Practice directly on your iPad using Apple Pencil and complete activities digitally without printing. CREATE AND PRINT YOUR OWN ACTIVITIES Generate personalized worksheets and reading exercises instantly, then print them for practice on paper. FULLY CUSTOMIZABLE Adjust font size, letter spacing, text color and background color to create a learning experience that works for you. SYNC ACROSS DEVICES Create an account and keep your progress synchronized across your devices. Perfect for children, people with dyslexia, educators, therapists, families, or anyone who wants to improve handwriting and reading skills in an accessible and engaging way.

About

Physics Zen

Features
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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

Screenshots

Dotty4 screens
Physics Zen4 screens

Verdict

The call

The clearest difference is update cadence: Physics Zen at every 2 days against Dotty's every 3 weeks. 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. Dotty sells 1 one-off in-app purchase 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

Dotty ships an update every 3 weeks, Physics Zen every 2 days. The most recent releases landed on October 2, 2026 and October 26, 2026 respectively.

Scorecard1 real difference · 5 level
Dotty versus Physics Zen: the parameters behind the verdict, then further details
ParameterDottyPhysics Zen
PriceFreeFree
Update frequencyEvery 3 weeksEvery 2 days — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS16.616.4 — better
Further details — not scored
Size29 MB84 MB
Age rating4+4+
DeveloperDevinetIvan Terekhin

In-app purchases

1 purchases

Dotty

One-time1
  • Magic Pencil$5.99
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 Dotty free?
Dotty 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 Dotty or Physics Zen have ads?
Neither Dotty nor Physics Zen shows ads.
Which is updated more often, Dotty or Physics Zen?
Dotty ships an update every 3 weeks, and Physics Zen every 2 days. Most recently, Dotty was updated on October 2, 2026 and Physics Zen on October 26, 2026.

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