# SpeedClock - Video Radar

> Measures speed of objects using device camera and motion detection. (iPhone/iPad app by Sten Kaiser.)

- Source: https://appshunter.io/ios/app/speedclock-video-radar/id400876654 (this page in markdown: same URL + `.md`)
- Developer: [Sten Kaiser](https://appshunter.io/developer/309325742)
- Category: Utilities, Sports
- Price: $2.99
- Rating: 2.40/5 from 83 App Store ratings · 146 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 34 MB
- Languages: American English
- Released: 2010-11-10
- Data updated: 2026-08-29
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/speedclock-video-radar/id400876654/reviews.md

## What is SpeedClock?

The iPhone speed radar - easy-to-use speed measurement in your pocket, anytime, anywhere!

A unique, advanced app designed to easily measure the speed of cars, boats, skaters, skiers, cyclists, animals, models, footballs, tennis serves, etc. The system is based on motion detection, enabling you to track a moving object using a hand-held device alone. SpeedClock includes three separate speed measurement tools and two distance estimation tools. 



Speed Radar 

SpeedClock uses the camera to detect and analyze motion, and a reference distance to calculate the speed of an object. Define the distance to the object of interest, hold the iPhone still and let the object pass across the the screen. The speed is displayed automatically. SpeedClock is also able to automatically measure the speed and save an image of passing objects. The measurement can be initiated from an Apple Watch and the speed displayed on the watch face.



High Speed Video Recording

An additional speed tool records and processes a video, which enables SpeedClock to track small, fast object, such as flying balls, that can be difficult to catch with regular motion detection. 

It also calculates additional parameters like acceleration.

Synchronized Timing Gates

A third speed instrument uses two iPhone/iPads equipped with motion detection to start and stop the timer and measure the speed. The distance between the devices is used as reference, and the speed is calculated based on the time taken by the object to travel between the 'Start' and 'Stop' devices. The time is transmitted wirelessly over WiFi or Bluetooth.



Distance Measurement 

The stadimeter uses the size of a known object, e.g. a car, to calculate the distance. 
The clinometer uses your own height as reference, along with the angle of the iPhone, to estimate the distance to a point on the ground. 
The distances obtained from either tool can then be used to calculate the speed. 


See a demo video at the application website (www.appmaker.se/speedClock)

ON LINE REVIEWS
“All I can say is, Fantastic”
http://www.madxperts.com/2010/12/03/measure-speed-app-speedclock-iphone-download/

"Wow, how cool is that!"
http://www.ithinkdiff.com/turn-iphone-speed-measuring-gun-speedclock-download/

"You really going to like this app"
dailyappshow.com/speedclock (video)

"A useful utility for anyone needing to measure speed"
appmodo.com/44581/

"Useful, easy to use and quite a bit of fun (4 of 5)"
appvader.com/2011/03/review-speedclock-iphone/

"speedClock is a useful app when you need to check the speed of yourself, or an object for exercise, racing or simple curiosity (4.5 of 5)"
www.cooliphoneipadapps.com/2010/12/speedclock.html

"Astonishing"
iphonelife.com/blog/5/speedclock-velocity-radar-099-app-lets-you-use-camera-measure-speed-objects

"It is a pleasure to use and operate.  A nice app for those looking for a open-ended radar gun app."
http://appadvice.com/appguides/show/baseball-radar-gun-apps

## Key features

- Motion detection speed measurement
- High-speed video recording
- Synchronized timing gates
- Distance estimation tools
- Apple Watch integration

## Chart rankings

- #42 in Top Paid · Utilities (US App Store)

## What do users think of SpeedClock?

Overall sentiment: mixed

**Pros**

- ✅ Accurate speed measurement when properly configured
- 💰 Affordable price point ($1.99-$4.99)
- 📸 Snapshot capture with timestamp and speed data
- 🎯 Works well with tripod stabilization
- 🔧 Versatile for measuring various moving objects
- 📊 Data logging and export capabilities
- 🌙 Functions in low-light conditions
- ⚙️ Customizable sensitivity settings
- 🎓 Comprehensive setup instructions available

**Cons**

- 🐛 Inconsistent accuracy across devices and iOS versions
- ⚠️ Requires precise manual distance calibration
- 🎯 Poor object tracking in crowded scenes
- 🌳 Sensitive to background motion and environmental factors
- 📱 Incompatible with some iPhone models
- 🔧 Steep learning curve for setup
- ❌ Frequently fails to detect moving objects
- 🌤️ Unreliable in varying lighting conditions
- 💥 Crashes and freezing issues
- 🔌 Requires completely stable phone positioning
- 📉 Accuracy degrades with multiple simultaneous objects

**Commonly reported bugs**

- App crashes on startup after updates
- Background motion detection too sensitive
- Speed readings 50% lower than actual speed
- Pins reset to different location after saving
- Cannot clear speed log properly
- Snapshot not saving to camera roll
- Data export sends blank emails
- Save to file opens blank screen and locks up
- Translation prompt appears unexpectedly
- Support website returns 404 error
- Settings reset on every app launch
- Camera freezes after first image capture
- Inconsistent readings between iPhone models

**Most requested features**

- Single object tracking from multiple options
- Automatic distance calibration via GPS
- User profiles for different configurations
- Improved data export functionality
- Date and time stamp on captured images
- Ability to filter traffic direction
- Faster processing for multiple vehicles
- Clearer error messages with solutions
- Trial version before purchase
- Better tutorial and documentation

## Recent user reviews (10 of 146)

All indexed reviews: https://appshunter.io/ios/app/speedclock-video-radar/id400876654/reviews.md

### 5/5 — Great

*2025-12-14*

Does what it says with a few extras like distances

### 1/5 — Golf swing

*2025-11-14, version 12.2*

Has trouble tracking specific objects especially if things are close by, don’t recommend for anything more than 60 mph

### 5/5 — Фіксація предметів

*2025-09-13, version 12.2*

Дякую хороший додаток але ви могли ще додати таку функцію щоб із багатьох предметів можна було вибрати один предмет і коли він рухається він слідкував за цим предметом?

### 1/5 — Ging früher sehr gut.

*2025-09-13*

Seit 3 Jahren kein Upgrade mehr. Aktuell keine Möglichkeit mehr, Geschwindigkeiten zu messen.

### 1/5 — Geht nur manchmal

*2025-09-06*

Funktioniert nur in seltenen Fällen. Woran es liegt, keine Ahnung. Geld ist weg.

### 2/5 — Doesn’t work.

*2025-08-28, version 12.2*

Difficult to use, doesn’t work on iPhone. Waste of money.

### 5/5 — Speed clock

*2024-06-27*

I’ve been using this on my iPhone on and off for a couple of years and it works without any issues. Captures speed of vehicles and captures a snapshot with a time stamp. There is a slight glitch when stopping recording and pressing the menu option as it ask for translation, however this does not stop the app from working and is very minor problem. Brilliant app.

### 1/5 — Seems to have a Major Glitch

*2024-05-01*

I’ve been trying to use it on a narrow road with traffic coming from both directions. So two distances (say 1m and 3m) set up.  However, the speed recorded seems to be only 50% of the actual speed.  Looks like a coding issue but ruins a potentially great app.

### 1/5 — Waste of money

*2024-04-01*

Even when it did register something, and after I set car length etc. It still showed cars doing over 200km hr as doing 50 or didn’t register. Don’t bother.

### 5/5 — Works perfectly!

*2023-11-03*

Worked perfectly straight out of the box. Even at night, under streetlights, it records the speed of passing cars and saves the photo to your camera roll. Very impressive app. Thank you.

## Frequently asked questions about SpeedClock

### What does SpeedClock do?

SpeedClock is an iPhone application designed to measure the speed of various moving objects using your device's camera and motion detection technology. It can track cars, athletes, animals, and even small fast objects like balls.

### What are the key features of SpeedClock?

Key features include a Speed Radar tool that uses the camera to calculate speed, High Speed Video Recording for tracking small, fast objects, and Synchronized Timing Gates using two devices for precise timing. It also includes distance estimation tools like a stadimeter and clinometer.

### How much does SpeedClock cost?

Based on the provided information, SpeedClock is a paid application. It does not feature in-app purchases or advertisements, indicating a one-time purchase model.

### What devices is SpeedClock compatible with?

The application is designed for iPhone and can be initiated from an Apple Watch. The Synchronized Timing Gates feature also supports using two iPhones or iPads.

### What are some common use cases for SpeedClock?

Common use cases include measuring the speed of oneself or others during exercise, tracking speeds in sports like cycling or football, monitoring the speed of pets, or simply for curiosity about the speed of moving objects.

## Version history (last 5 releases)

### 12.2 — 2021-10-30

Improved human and car tracking in Live Speed, especially on older devices.

### 12.1 — 2021-03-16

- More consistent tracking of humans and cars in Live Speed on older devices.
- Better feedback of the tracking performance.

### 12.0.2 — 2021-02-22

v 12.0.2 fixes the problem with low frame rates in Video Speed and a potential crash in Live Speed.

v 12.0 was a major update with a new 'Live Speed' tool that includes AI-based object detection. It can be used as a much-improved version of Speed M.

### 12.0.1 — 2021-01-19

v 12.0.1 fixes a problem with saving snapshots in Live Speed.

v 12.0 was a major update with a new 'Live Speed' tool that includes AI-based object detection. It can be used as a much-improved version of Speed M.

### 12.0 — 2021-01-12

v 12.0 is a major update with a new 'Live Speed' tool that includes AI-based object detection. It can be used as a much-improved version of Speed M.

## Apps similar to SpeedClock

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Speedometer: MPH Speed Tracker](https://appshunter.io/ios/app/speedometer-mph-speed-tracker/id1583190276) | 4.5 (203) | Free | Utilities |
| [Speedometer GPS: Speed Tracker](https://appshunter.io/ios/app/speedometer-gps-speed-tracker/id6448165553) | 4.6 (8,611) | Free | Utilities |
| [Speedometer ٞ](https://appshunter.io/ios/app/speedometer/id1309554658) | 4.3 (778) | Free | Utilities |
| [GPS Speedometer・Miles per hour](https://appshunter.io/ios/app/gps-speedometermiles-per-hour/id1644074261) | 4.4 (97) | Free | Utilities |
| [GPS Speedometer- Speed Tracker](https://appshunter.io/ios/app/gps-speedometer-speed-tracker/id1291822089) | 4.0 (4,169) | Free | Utilities |
| [Speedmeter ..](https://appshunter.io/ios/app/speedmeter/id1632828052) | 4.6 (285) | Free | Utilities |

## More apps by Sten Kaiser

- [SeeLevel - visual clinometer](https://appshunter.io/ios/app/seelevel-visual-clinometer/id333213338)
- [RacquetTune - String Tension](https://appshunter.io/ios/app/racquettune-string-tension/id365729342)
- [SwingTool - Swing Weight](https://appshunter.io/ios/app/swingtool-swing-weight/id408209116)
- [SprintTimer - Photo Finish](https://appshunter.io/ios/app/sprinttimer-photo-finish/id430807521)
- [FitnessMeter - Test & Measure](https://appshunter.io/ios/app/fitnessmeter-test-and-measure/id477488986)

All apps by Sten Kaiser: https://appshunter.io/developer/309325742

## Related topics

[speed radar soccer](https://appshunter.io/ios/topics/speed-radar-soccer) · [speed radar car](https://appshunter.io/ios/topics/speed-radar-car) · [speed radar swing](https://appshunter.io/ios/topics/speed-radar-swing)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-29.*