Local-first utility

ScreenMeasure

A native measurement workspace for ruler, circle, area, history, and calibration tasks.

ScreenMeasure is built with SwiftUI for iPhone, iPad, and macOS. It treats the screen as a calibratable measurement plane so you can move between line checks, circle fitting, freehand area estimation, and saved results with a consistent workflow.

Distance ruler Circle tools Area tracing Manual calibration History sync

Ruler workspaceMeasure in mm, cm, m, in, or ft with edge zero-point options and a two-end distance mode.

Circle workspaceMeasure circles by diameter points or freehand fitting, then read center, radius, circumference, and area.

Area workspaceTrace a region, auto-close the contour, and estimate area with unit conversion and local history.

Core capabilities

Unified measurement modes

One app covers ruler, circle, and area workflows instead of splitting them into separate tools.

Cross-platform UI

The same state model drives iPhone, iPad, and macOS so the experience stays familiar across Apple devices.

History and sync

Measurements are saved locally and history can sync across devices on the same Apple account.

Calibrated results

Default ratios come from device or display data, and manual calibration can refine them when precision matters.

本地优先工具

ScreenMeasure

把标尺、圆形、面积、记录和校准整合到同一套原生测量工作区里。

ScreenMeasure 基于 SwiftUI 构建，面向 iPhone、iPad 和 macOS。它把屏幕当作可校准的测量平面，让你在长度测量、圆形拟合、自由描边面积估算和历史查看之间保持一致的使用体验。

距离测量圆形测量面积描边手动校准记录同步

标尺工作区支持 mm、cm、m、in、ft，多种零点方向，以及双端测距模式。

圆工作区既能两点定直径，也能自由描边拟合圆，并自动给出圆心、半径、周长和面积。

面积工作区自由描边后自动闭合轮廓，换算面积单位，并把结果写入本地历史记录。

核心能力

统一测量模式

一个应用覆盖标尺、圆形和面积三类测量，不需要在多个工具之间来回切换。

跨平台一致体验

同一套状态模型同时驱动 iPhone、iPad 和 macOS，换设备后也容易上手。

历史记录与同步

测量结果会保存在本地，并可在同一 Apple 账号下的设备之间同步历史记录。

更可靠的校准