SpeedClock - Video Radar 4+

Sten Kaiser

    • 2.5 • 72 Ratings
    • $2.99


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)

“All I can say is, Fantastic”

"Wow, how cool is that!"

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

"A useful utility for anyone needing to measure speed"

"Useful, easy to use and quite a bit of fun (4 of 5)"

"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)"


"It is a pleasure to use and operate. A nice app for those looking for a open-ended radar gun app."

What’s New

Version 12.2

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

Ratings and Reviews

2.5 out of 5
72 Ratings

72 Ratings

kevin L 623 ,

Hit and miss

I’ve been using the app now for about two weeks. I have noticed if I am in a shadow and the subject areas and light it does not work well I’m not I’m also having issues on Cloutier days is not working this morning and it works great afternoon zero very disappointing.

victory_gym_vhc ,


Using and iPhone XS, completely updated with the latest IOS. If any thinks this will work correctly in 5 minutes, you’ll be disappointed. This is not a fire and forget app. You need to measure your distance properly. Insure your field of view is clear. Pan down if there are a lot of trees in the background and it’s windy. Adjust your settings tracking sensitivity to about the mid-point (worked best for me). Also, check the zoom as your tracking. Zoomed far out, I had a lot of trouble getting a reading. However, zooming in to a tracking distance of about 25/30 feet, from start to end, and it caught the speeds nearly every time. If you press Start, and you get a tracking error (background movement, etc), just tap Stop, then Start again. This seemed to stabilize things. Try and line your tracking boxes (the Red bars on either side) up with a fixed point to insure a good track. And most importantly, hold it very very still (a tripod would be perfect).
DONT take the overall rating as this is a bad app. Many factors come into play when using this. This is why in the beginning of my review, I said what phone I was using, and if it was up to date.

JonHenry333 ,

Excellent, and for the price, incredible!

I installed the SpeedClock App on my iPhone X. I positioned the iPhone on a tripod in my driveway with a clear view of my street. I accurately measured the distance from the iPhone to the center of the street (43 feet) and input that number into the App as per the instructions. I drove down the street several times at 30 mph and found the App measured and recorded my speed accurately to within a couple of mph. I also used the option to capture the image which shows speed, date and time. I am the HOA President and I can use this App to help identify the speedsters in our neighborhood. My thanks to the developer!

App Privacy

The developer, Sten Kaiser, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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