# SpeedClock - Video Radar

> Utilities

Canonical page: [https://chrome-stats.com/d/id400876654](https://chrome-stats.com/d/id400876654)

## Overview

- **ID:** `id400876654`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Sten Kaiser
- **Category:** Utilities
- **Rating:** 2.40 / 5 (83 ratings)
- **Version:** 12.2
- **Last updated:** 2021-10-30
- **First published:** 2010-11-10
- **Size:** 34 MB
- **Data as of:** 2026-09-22
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/speedclock-video-radar/id400876654)
- **Privacy policy:** [http://appmaker.se/speedclock/privacy/](http://appmaker.se/speedclock/privacy/)

## Description

SpeedClock - Video Radar for Chrome brings motion-based speed measurement to your browser. Use your webcam to detect motion and calculate the speed of moving objects, with built-in distance estimation and timing analysis.

It offers three measurement modes and two distance tools to support sports, science, or curious experiments. See a demo video and start measuring speeds, distances, and timing directly in your browser.

## Rankings

- #185,012 — Overall

## Review summary

User reviews are mixed. Some users report accurate speeds and useful traffic-monitoring capabilities when the app is set up and calibrated correctly. However, many describe the app as unreliable and difficult to use, with frequent inaccuracies, heavy setup requirements, background-motion false readings, and persistent errors. Compatibility and support concerns are also noted. The app can be helpful in ideal conditions but is not consistently dependable for everyday use.

### Pros

- Accurate speeds when configured/calibrated properly (often within +/- 0.5 mph).
- Useful for monitoring traffic and identifying speeders (e.g., HOA or neighborhood use).
- Can log speed data and capture an image with speed, date, and time.
- Calibration by measuring the distance to the subject can improve accuracy.
- Beneficial in ideal conditions with a stable setup and proper tracking parameters.

### Cons

- Inaccurate/unreliable readings across many attempts and locations.
- Requires extensive setup and calibration; many parameters to configure and precise distance measurements.
- Background motion or objects (trees, shadows, wind) trigger false readings.
- Frequent errors/freezes and no simple reset; data point errors.
- Support/updates appear inactive or compatibility issues on some iPhone models.

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Source: [Chrome-Stats](https://chrome-stats.com/d/id400876654)