SpeedClock vs SpeedGunner
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SpeedClock
This app uses your device's camera and motion detection to measure the speed of various moving objects. It offers multiple tools for speed and distance estimation, including high-speed video recording and synchronized timing gates.
- Motion detection speed measurement
- High-speed video recording
- Synchronized timing gates
- Distance estimation tools
- Apple Watch integration
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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
SpeedGunner
This app uses your device's camera and lidar to measure vehicle speeds in your neighborhood. It offers real-time detection with photo evidence and encrypted local storage for your peace of mind.
- Real-time speed detection
- Vehicle tracking and license plate modes
- LiDAR distance calibration
- Auto-capture with photo evidence
- Encrypted local data storage
- CSV export
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SpeedGunner uses your iPhone's camera, lidar and computer vision to measure vehicle speeds in your neighborhood. FEATURES: • Real-time speed detection using advanced computer vision • Two measurement modes: Vehicle Tracking (side profile) and License Plate (approaching) • Automatic LiDAR distance calibration on supported devices • Auto-capture with photo evidence when speed threshold is triggered • Seven-segment LCD-style speed display • Encrypted local data storage with CSV export • Thermal throttling management for sustained use • Camera shake compensation HOW IT WORKS: Point your iPhone at a road from a fixed position. SpeedGunner detects passing vehicles using advanced computer vision. Results are displayed in a classic digital readout style. IMPORTANT: SpeedGunner is a consumer tool for neighborhood safety awareness. Speed measurements are estimates and are not suitable for law enforcement or legal proceedings. Do not use while driving.
Screenshots
Verdict
The clearest difference is rating: SpeedClock at 2.4 against SpeedGunner's 1.0. SpeedClock also leads on review sentiment (41% vs 0%) and ratings volume (83 vs 2). SpeedGunner's advantage is price ($1.99 vs $2.99). On update cadence, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
SpeedClock costs $2.99 and SpeedGunner $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
SpeedClock holds the better App Store score, 2.4 against 1.0. That said, the two scores are not equally well evidenced: SpeedClock has 83 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 41% of SpeedClock's written reviews are positive against 0% of SpeedGunner's.
SpeedClock ships an update every 2 months, SpeedGunner monthly. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.
| Parameter | SpeedClock | SpeedGunner |
|---|---|---|
| Price | $2.99 | $1.99 — better |
| Rating | 2.4 (83 ratings) — better | 1.0 (2 ratings) |
| Positive reviews | 41.3% of reviews — better | 0.0% of reviews |
| Number of ratings | 83 — better | 2 |
| Update frequency | Every 2 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 34 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Sten Kaiser | i4software |
Customer experience
SpeedClock
SpeedGunner
Bugs and requests
SpeedClock
Reported bugs
13 issues- 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
Show 8 moreShow fewer
- 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
Requested features
10 requests- 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
Show 5 moreShow fewer
- Ability to filter traffic direction
- Faster processing for multiple vehicles
- Clearer error messages with solutions
- Trial version before purchase
- Better tutorial and documentation
SpeedGunner
Not enough reviews yet to summarise bugs or requests.
In-app purchases
SpeedClock
No in-app purchases
SpeedGunner
No in-app purchases








