KartTracker vs Stopwatch°
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KartTracker
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KartTracker is a fully automated, wireless timing system for karts. Laps are timed with 0.001s precision (including sector times) on your mobile without pressing a button or lifting a finger. Simply install one of our KartTracker timers on your kart and you're ready to go. KartTracker is compatible with standard magnetic timing strips as found on most karting tracks. In addition, KartTracker includes a manual lap timer which can be combined with the automatic timing system or used as a standalone timer. (We won't forget you, early users!) It is the easiest and most accurate on the market. Big buttons which instantly record the time. No more trying to hit the tiny Lap button of the built-in stopwatch. You can mix automatic timing (for your own drivers) with manual timing (for the competition, hehe) so you can easily compare lap times. Features: * Time 1 to 4 different drivers, using large buttons which fill the screen * Mix automatic (using KartTracker timers, available on our website) and manual timing to your heart's content * Scrollable results list of recorded laps with lap number, lap time and sector times * Automatically time laps and sectors with 0.001s precision. That's one thousandths of a second, folks. * Displays the fastest lap for each driver (in green) * Displays the fastest lap time of all drivers (in purple) * Displays the last lap time for each driver (in white) * Shows the time gap between adjacent drivers (to check if Driver 2 is closing in on Driver 1, for example) *currently only for manually timed laps * Records time immediately and accurately when your finger hits the screen (not when your finger is lifted, like other timers) * You can connect up to 4 KartTracker timers to automatically time four drivers at once! Manual Usage: 1. Press one of the big blue buttons to start timing (you can press all of them at once, if you like) 2. Press again when a driver has completed the lap (pro tip: use an easy visual reference point, far enough from your own position) 3. To stop recording, press Stop (when you've pressed Stop, the lap numbers will start at 1 again, but the previous lap times are retained) 4. To reset to zero, hold the Stop button for half a second 5. To cycle between 1, 2, 3, or 4 timers, press the "1...4" button 6. Optionally give each timer a name (only the initial letter will be shown) Automatic Usage: 1. Buy a KartTracker timer on our website. You won't regret it! 2. Pair the KartTracker timer with the app (the KartTracker timer needs within a few inches / cm of your mobile) 3. Install the KartTracker timer on your kart (somewhere on the floor pan, low to the ground) 4. Choose the number of sectors for the track you'll be driving on (this corresponds to the number of magnetic strips) 5. Set which sector is the first sector of the track (that usually depends on where the strips are and where the pit-lane exit is) 6. Stand next to the track (closer than 20m / 60ft or at a higher vantage point) and magically see lap and sectors times appear on the app! 7. Optionally enter the name of the driver to easily recognize each kart And don't worry. We had security in mind from the start. Nobody else can see your lap times. Unless you show them your screen and tell them how great KartTracker is, obviously. Feel free to tell you friends about us! Enjoy! Please send feedback and ideas to our contact email
Stopwatch°
This app provides precise timekeeping with multiple stopwatches for simultaneous activity tracking. It offers a distraction-free full-screen mode and allows data export for analysis. Enjoy a reliable, ad-free, and subscription-free timing experience.
- Multiple stopwatches
- Simultaneous activity timing
- Full-screen mode
- Intuitive interface
- CSV data export
- Ad-free experience
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Stopwatch helps you time activities and record laps on iPhone and iPad. Use a single stopwatch or run several at once for sports, cooking, training, experiments, and everyday tasks. • Time multiple activities Run stopwatches independently or start and stop them together. • Keep your timers organized Name your stopwatches and group them into folders for different activities. • Record and compare laps Give laps descriptive names, review split and total times, and compare your fastest, slowest, and average laps. • Choose your view Switch between digital and analog displays, or use fullscreen mode for a larger clock. • Export your results Save stopwatch and lap data as CSV files to review in a spreadsheet or share with others. • Adjust the display Choose your preferred time precision and customize stopwatch controls to suit how you use the app. Terms of Service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://stopwatchapp.carrd.co/#privacy
Screenshots
Verdict
The clearest difference is update cadence: Stopwatch° at every 2 weeks against KartTracker's every 2 months. KartTracker's advantage is iOS requirement (10.0 vs 17.0). On price, ads, in-app purchases and device support 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
KartTracker ships an update every 2 months, Stopwatch° every 2 weeks. The most recent releases landed on October 5, 2026 and October 12, 2026 respectively.
| Parameter | KartTracker | Stopwatch° |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.8 (306 ratings) — better |
| Positive reviews | — | 98.1% of reviews |
| Number of ratings | — | 306 — better |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 10.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 16 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | UVee | Kai Oelfke |
Bugs and requests
KartTracker
Not enough reviews yet to summarise bugs or requests.
Stopwatch°
Reported bugs
1 issue- CSV export not working (produces empty email)
Requested features
14 requests- Periodically ask for rating after extended use
- Add feature to sum time lapsed in folders
- Add feature to show start and end time for each lap
- Move reset or delete all buttons to less accessible locations
- Make buttons larger for easier use while biking
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- Make it float on the Lock Screen
- Add dark mode option
- Add option for different font colors for fastest/slowest laps in export
- Add option to delete single laps by swiping left
- Make delete confirmation optional
- Full screen option
- Make available for Apple Watch
- Visibly running current lap time on Apple Watch
- Rename folders
In-app purchases
KartTracker
No in-app purchases
Stopwatch°
No in-app purchases
Questions
Is KartTracker free?
Is Stopwatch° free?
Do KartTracker or Stopwatch° have ads?
Which is updated more often, KartTracker or Stopwatch°?
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