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Guides, tips, and insights about GPS speed tracking

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Odometer vs Speedometer vs Trip Meter

Learn what ODO, speedometer and Trip A/B readings mean, how speed differs from distance, and where a phone GPS trip recorder fits.

tutorials

September 11, 2026 • 5 min read

Apple Watch Speedometer: Three Ways to See Your Speed

Choose between Apple's cycling workout speed, a phone-assisted speedometer companion and a standalone Watch app for phone-free use.

features

September 10, 2026 • 5 min read

How to See Your Current Speed While Using Apple Maps

Learn the difference between Apple Maps' posted speed limit and your current speed, plus how to add a floating GPS speed display on iPhone.

features

September 10, 2026 • 5 min read

Google Maps Speedometer on iPhone: Turn It On and Understand the Reading

Turn on the Google Maps speedometer on iPhone. Understand current speed vs speed limits and choose between navigation, trip recording and a browser check.

features

September 10, 2026 • 3 min read

278 km/h on the Shinkansen: What a GPS Speedometer Records on a Bullet Train

A GPS speedometer filmed on a Shinkansen in October 2024 held 276–278 km/h and logged 13.2 km in 2:51. Here are the numbers, and why the app's top speed says 283.

use-cases

August 14, 2026 • 17 min read

How to Test Your Boat's Real Speed with GPS

A disagreement alone does not identify which instrument is wrong. Compare their different reference frames and measurement conditions before changing calibration.

tutorials

August 2, 2026 • 9 min read

Best Free Speedometer Apps for iPhone (2026)

Compare five iPhone speedometer apps by what is confirmed free, what needs an optional purchase, and which feature limits to check before your first trip.

comparisons

July 9, 2026 • 8 min read

Best Speed Camera Detector Apps for iPhone (2026)

Compare five iPhone camera-alert apps by task, data source and limitations. GPS warnings, offline data and regional rules explained without a tested ranking.

comparisons

July 4, 2026 • 8 min read

Which iPhone GPS Speedometer App Fits Your Trip?

Choose an iPhone speedometer for a large display, trip records, HUD or navigation. Seven named apps, purchase boundaries and dated official sources.

comparisons

July 4, 2026 • 5 min read

How Accurate Is a GPS Speedometer at High Speeds?

GPS speed accuracy at highway speeds depends on the receiver, signal and software. Understand update delays and compare readings without assuming a fixed error.

comparisons

May 14, 2026 • 4 min read

Tire Size and Speedometer Readings: Estimate the Change

Estimate how a tire-diameter change affects a speedometer, understand the calculation limits, and compare readings without assuming GPS is ground truth.

tutorials

May 12, 2026 • 6 min read