OneUke vs PhysicsBench

OneUke 是为尤克里里完全新手设计的入门 App。每天打开，只需要完成一个清楚的小目标：认识四根弦、把琴调准、跟稳四拍、按响第一个和弦，最后弹出一首熟悉的旋律。 你可以： - 跟随 7 天入门计划，从第一次拨弦开始学习 - 使用标准 G C E A 调音器，理解每根弦该调高还是调低 - 学习 C、Am、F、G7 等常用入门和弦 - 用节拍器、慢速播放和分段循环建立稳定节奏 - 练习原创旋律与公版经典旋律，并查看和弦或 TAB - 导入 ChordPro、TXT 或 PDF 曲谱，保存在自己的设备上 - 查看练习分钟、课程进度和本地成就 无需注册或登录。调音时，麦克风音频只在设备上实时分析，不会录音、保存或上传；导入的曲谱和学习进度也只保存在本机。 免费下载可完成前两天课程，体验“认识琴弦、完成调音、弹出熟悉旋律”的完整入门过程。一次性买断即可解锁后续课程、完整和弦库、全部曲目、曲谱导入和详细统计。

Solve real physics, not fake wiring puzzles. PhysicsBench simulates actual circuits, light paths and torque — then shows you the formula behind your solution. Wire a battery, close a switch, watch current flow and a bulb light up. Bounce a beam off mirrors into the target. Balance a lever with the right weights. Every level ends with a Principle Card: the law, the formula, and your level's real numbers substituted in. MAIN FEATURES • 108 levels across seven subjects: Circuits, Optics, Mechanics, Dynamics, Electromagnetism, Heat & Fluids, Waves & Sound • Three difficulties per subject: Intro, Core, Brainer • True simulation — nodal analysis for DC circuits with diodes and capacitors, ray tracing for light, torque balance, and closed-form models for motion, induction, heat and sound • Principle Card after every solve, with your own values • Daily experiment with streaks • Courses by topic, a review queue for levels you needed hints on, and a mastery radar • Unlimited hints, never a consumable • Import and play levels friends share as a code or .physlab file • Home-screen widget, Apple Pencil notes and bench recording • Works fully offline. No ads, no accounts, no tracking PRO — ONE-TIME PURCHASE • All 108 levels, including every Brainer level • Full step-by-step derivation on every Principle Card • Frame-by-frame replay with velocity and force arrows, and a draggable RC charging curve • Free Bench lab: sliders for every model, plus building, naming and saving experiments • Level editor that proves your puzzle is solvable before you share it • Full probe panel: per-branch voltage, current and power; every beam path; torque breakdown • Four extra themes and three alternate app icons • Future local Pro levels in this app ANSWER REPORTS — OPTIONAL Pro includes every answer and all Pro features. One-time purchase. No subscription. Three sample answers per category are free to view again. Unlock Pro for all remaining answers. Existing answer-pack purchases can still be restored for their original difficulty. PRIVACY Everything runs on your device. Progress syncs through your own private iCloud. No account, no analytics SDK, no data sent to us. NOTE Levels use teaching-simplified models (ideal wires, batteries with internal resistance, single-colour rays). The in-app "About the model" page lists every assumption. Support · Privacy Policy · Terms of Use are in Settings.