GPS Race Timer vs DragCalc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GPS Race Timer
Accurately measure vehicle acceleration times like 0-60 mph and 1/4 mile using your iPhone's GPS. Set up timers beforehand and let the app automatically start measurements when speed targets are met or motion is detected. Save, export, and transfer your performance data easily.
- Measure 0-60 mph, 60-120 mph, 1/4 mile
- Automatic start detection
- Save and export results
- Preset and adjustable timers
- No extra hardware required
- Optional PRO version features
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Measure acceleration times such as 0–60 mph, 60–120 mph and 1/4 mile directly with your iPhone — accurately and without extra hardware. The app is designed so it doesn’t need to be operated while driving; you just set everything up beforehand while stationary. Measurements then start automatically — when the target speed is reached or when a start is detected. You can save results locally on your iPhone and, if needed, export them or transfer them to other devices. Preset timers: 60 ft, 1/8 mile, 1/4 mile, 1/2 mile, 1 mile, 0 – 60 mph, 0 – 120 mph, 50 – 75 mph, 60 – 120 mph, 0 – 100 km/h, 0 – 200 km/h, 80 – 120 km/h, 100 – 200 km/h. All timers are, of course, fully adjustable. The free version measures up to two times per run. How to use the app: Check the timer settings on the start screen. If everything looks good, place your iPhone in the car where it has good GPS reception and is held securely, then start the acceleration test. You can adjust the timer configuration in the Settings screen (just tap the relevant timer). Then return to the race screen and follow the previous instruction. Optional PRO version (in-app purchase): 1. Up to four timers in parallel (instead of two) 2. Precise determination of elevation differences 3. Simulation of a Sportsman start and reaction-time measurement 4. No ad banners
DragCalc
This app predicts drag racing performance metrics like quarter-mile times and trap speeds using a physics-based simulation. It allows users to input car specifications, compare different builds, and analyze real-world runs.
- AI-powered car input
- Quarter & Eighth Mile ET/trap speed predictions
- Side-by-side car build comparison
- Slope correction for track grade
- Analysis of imported run data
- Cloud sync for presets
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DragCalc is the ultimate drag racing performance calculator. Predict your quarter-mile times, trap speeds, and acceleration metrics with physics-based simulation. FEATURES: • AI-Powered Input — Describe any car and get instant specs • Quarter & Eighth Mile — Accurate ET and trap speed predictions • Compare Builds — Race up to 4 cars side-by-side with animated simulation • Slope Correction — Correct your times for track grade • Analyze Runs — Import Dragy CSV files or timeslips • Cloud Sync — Sign in to save presets across devices PHYSICS ENGINE: • Real tire compounds (slicks, radials, street) • Surface grip modeling (prep, asphalt, concrete) • Drivetrain losses and transmission efficiency
Screenshots
Verdict
The clearest difference is rating: GPS Race Timer at 4.5 against DragCalc's 3.0. GPS Race Timer also leads on review sentiment (34% vs 0%) and ratings volume (2.7K vs 1). DragCalc's advantage is in-app purchases (none vs 1). On price, update cadence and ads 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. GPS Race Timer sells 1 one-off in-app purchase. DragCalc asks for nothing beyond the download.
GPS Race Timer holds the better App Store score, 4.5 against 3.0. That said, the two scores are not equally well evidenced: GPS Race Timer has 2.7K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 34% of GPS Race Timer's written reviews are positive against 0% of DragCalc's.
GPS Race Timer ships an update every 7 months, DragCalc every 5 months. The most recent releases landed on October 17, 2026 and October 13, 2026 respectively.
| Parameter | GPS Race Timer | DragCalc |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (2.7K ratings) — better | 3.0 (1 ratings) |
| Positive reviews | 34.4% of reviews — better | 0.0% of reviews |
| Number of ratings | 2.7K — better | 1 |
| Update frequency | Every 7 months | Every 5 months — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Ad-supported — better |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 12.2 — better | 18.1 |
| Further details — not scored | ||
| Size | 50 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Thomas Hagenau | Sheharyar Irfan |
Customer experience
GPS Race Timer
DragCalc
Bugs and requests
GPS Race Timer
Reported bugs
4 issues- Timer doesn't reset properly
- App crashes on startup
- Significant GPS/speed detection delays
- Recorded times do not match actual performance
Requested features
4 requests- Add 60ft and 1/8 mile times
- Automatic start/stop of timer
- Manual start option for timer
- Improved accuracy and consistency
DragCalc
Not enough reviews yet to summarise bugs or requests.
In-app purchases
GPS Race Timer
- PRO$4.99
DragCalc
No in-app purchases
