把设备秒变专业电子透写台
一键锁屏吞掉一切误触，素描与纯净轮廓智能提取。直接在平板上铺一张A4纸，拿起铅笔轻松学画画！
One-tap screen lock eliminates accidental touches. Extract smart sketches and clean outlines. Place regular paper over your screen and start tracing effortlessly!
专为临摹而生的核心体验
Built Specially for Tracing, Sketching & Drawing
告别昂贵笨重的物理拷贝台，让每一张好照片都变成你的画画底稿 · Replace bulky light tables with your digital device
底层防误触锁定
True Touch-Proof Lock
进入锁屏临摹状态，底层手势拦截技术彻底吞掉手掌压屏、画纸擦碰误触；长按2秒呼吸倒计时安全解锁，无惧误触中断。
System-level gesture intercept swallows palm resting and paper sliding. Hold 2 seconds to unlock safely with a visual countdown ring.
智能转线稿引擎
Smart Line-Art Engine
高斯差分 (DoG) 纯净轮廓与颜色减淡素描算法，高清照片自动提炼清晰黑白线稿，平坦背景保持纯白，笔触清晰利落。
Difference of Gaussians (DoG) and Color Dodge algorithms turn photos into clear black & white line drawings with clean white backgrounds.
悬浮上下滑杆
Vertical Slider Control
按需弹出右侧滑杆，上下滑动实时微调线条粗细、细节深浅与对比灵敏度，所见即所得，松手即算。
On-demand vertical slider allows real-time fine-tuning of line thickness, contour depth, and sensitivity with instant visual feedback.
高透光常亮护航
Max Brightness & Keep Awake
锁屏期间屏幕自动调至最高亮度并保持常亮，光线强劲穿透素描纸、打印纸或水彩纸，描线清晰无比。
Automatically turns screen brightness to maximum and keeps it awake during tracing, clearly shining through copy paper, sketch paper, or vellum.
构图无级掌控
Smooth Canvas Navigation
支持多点触控双指自由缩放、任意平移、90°顺逆时针旋转与水平一键镜像翻转，左撇子右撇子都顺手。
Smooth pinch-to-zoom, pan, 90° clockwise/counter-clockwise rotation, and horizontal mirror flip for perfect framing.
图片本机处理
On-Device & Private
不索取多余权限，不收集设备识别码，无第三方追踪 SDK。切到后台或关闭再打开，上次构图与滤镜无缝保留。
No unnecessary permissions, zero tracking SDKs, and no cloud uploads. App state auto-persists across background switching.