New exam paths, twelve in all, including HKDSE Physics. Nine new skills and many new problem types, now 66 skills across 21 topics: particle physics, special relativity, matter waves and X-rays, wave graphs and two-source interference, angled launches, static friction, vertical circles, escape speed, motional EMF, inductance and AC, kinetic theory and entropy. Exam items now follow each exam's real format: AP free-response with follow-through marks, A-Level required-practical data analysis, Common Test digit cells, CSAT 보기 items. Larger keypad keys, plus decimal commas and localized formula notation wherever your language uses them.

Physics Zen now speaks Russian: every problem, theory card and worked solution. Plus small fixes to theory cards.

Small improvements and polish.

New in 1.9.0: • Two new exam paths: AP Physics C: Mechanics, with calculus-based problems, and AP Physics 2. • Four new skills: the magnetic field of a current, AC and transformers, the electromagnetic spectrum, and sound intensity in decibels. • Electromagnetic induction is now free to practise.

New in 1.8.0: • Statistics: long topic names in the time chart no longer get cut off. • Units like m/s² no longer break across two lines. • New exam paths for Korea (CSAT Integrated Science, 2028 onward) and Taiwan (AST Physics), plus Simplified Chinese.

New in 1.7.0: • Physics Zen now speaks Dutch, Swedish, Japanese, Traditional Chinese and Korean, with every problem, hint and solution translated. • New exam practice: Japan's Common Test (Physics and Basic Physics) and Korea's CSAT Physics I, each with original exam-style items. • Fixed a few formulas in hints and solutions that showed as raw code instead of rendered math.

New in 1.6.0: • Use Math Zen too? Owners of one app now get the other's Lifetime at a lower price. You'll find it under More from us in Settings. • The upgrade screen now loads its prices reliably when Physics Zen opens from a link. • The upgrade screen shows all six Pro features.

New in 1.5.0: • Physics Zen is now made for iPad. The problem sits large on the page with your answer keypad docked beneath it. • In landscape, the problem and your work lie side by side like an open textbook. • Text, keys and diagrams are sized for the bigger screen.

New in 1.4.0: • Complete Brazilian Portuguese content: problems, theory, worked solutions and exam practice. • Eight new electricity and magnetism problem types: field and potential superposition, current-voltage data, device ratings, Kirchhoff junctions, RC measurements, magnetic force balance and flux linkage. • Expanded explanations for the new problems.

New in 1.3.0: • Complete Spanish content, including theory, worked solutions and exam practice. • Five new types of thermodynamics problems: electrical heating, phase-change timing, gas density and state changes, pressure-volume cycles, and heat-engine efficiency. • Expanded explanations and formulas for the new problems.

Physics Zen 1.2.0 extends the AP Physics 1 path and sharpens multiple choice everywhere. • Seven new exam-style problem sets for rotation and fluids: torque and balance, a rotational-dynamics lab, rolling bodies, angular momentum, pressure at depth, buoyancy and pipe flow, each with a distractor given and a worked solution • The AP Physics 1 path now has exam-style questions on 16 of its 26 skills • Wrong answers in multiple-choice problems across the whole curriculum are more realistic, so the correct value no longer stands out by its size

Physics Zen 1.1.1 polishes the interface. • Switches, progress bars, keypad keys and the practice-mode buttons are easier to see on the light theme • Lists now scroll all the way under the bottom edge instead of stopping short • Sheets fade in smoothly • Weekday labels on the activity calendar line up with their rows • Badge captions on the achievements screen are more legible

Physics Zen now includes German and French problems, theory and worked solutions. New focused paths for Abitur Physik and the physics portion of the French Bac, plus capacitors, RC circuits, interference and diffraction. New laboratory exercises build data interpretation and multi-step reasoning.