Devim GPS: 0-60 and Drag Timer

Devim GPS: 0-60 and Drag Timer

GPS + OBD Drag & Speedometer

1 ratings
1 review
Free

Details

  • Released
  • Updated
  • April 22, 2026
  • August 8, 2026

Features

Devim GPS: 0-60 and Drag Timer screenshot #1 for iPhone
Devim GPS: 0-60 and Drag Timer screenshot #2 for iPhone
Devim GPS: 0-60 and Drag Timer screenshot #3 for iPhone
Devim GPS: 0-60 and Drag Timer screenshot #4 for iPhone
Devim GPS: 0-60 and Drag Timer screenshot #5 for iPhone
Devim GPS: 0-60 and Drag Timer screenshot #6 for iPhone
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About

This app measures vehicle acceleration and distance using your iPhone's GPS or an OBD-II adapter. Analyze detailed run data, compare performance, and organize results by vehicle. An Apple Watch companion app is also included.

0-60 mph and custom speed range timing
Distance measurement (1/4 mile, 1 mile, etc.)
Automatic standing-start detection
GPS and BLE OBD-II adapter support
Detailed run analysis (graphs, splits, G-force)
Apple Watch companion app
Vehicle profile organization
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+1

What's New in Devim GPS

2.1.0

August 8, 2026

Version 2.1.0 brings the run closer to your wrist and makes the measurement flow more dependable from setup to save. APPLE WATCH • Follow live speed, ready, measuring, and completed states, distance progress, trip statistics, and recent results from your wrist. • Switch between Speed, Distance, and Trip, adjust targets, and use trip controls on Apple Watch. • Away from the iPhone, Watch GPS works as a standalone speedometer. Recording measurements still requires the connected iPhone with Devim GPS open. MORE DEPENDABLE MEASUREMENTS • Standing starts now filter stationary GPS and motion noise and wait for confirmed movement before timing begins. • Completed runs are safeguarded as soon as they finish and can recover after an interruption or relaunch without creating duplicate records. • Once a measurement is armed, its mode, target, data source, selected vehicle, and standing-start settings remain fixed until it ends. SMARTER OBD SETUP • Guided BLE OBD-II setup now includes live-speed verification, automatic reconnection, easier adapter management, clearer troubleshooting, and GPS fallback. • Some Tesla vehicles can opt in, vehicle by vehicle, to experimental CAN speed input when standard vehicle-speed data is unavailable. Support varies by model; this beta remains untested on some vehicles. SHARING AND CLARITY • Choose whether result cards include the graph, speed splits, and location; Pro can optionally attach a measurements CSV. • Clearer timing evidence shows the GPS/OBD method, sample and signal context, alignment, and result status without overstating small differences. POLISH • Added Keep Screen Awake and easier access to support, with improved error handling, accessibility, small-screen layouts, and localized text. Set everything up while parked and keep the phone secured.

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User reviews

It’s okay

Did multiple pulls 60-130 and got a 1.8 uncertainties each time. Which means I could be running 7’s or not. So yeah could very well be my gps signal but I was closer to the city so I couldn’t see it being gos more than the app not holding a stable connection?

Response from developer

Thanks for the feedback. With ±1.8 s uncertainty, the phone’s GPS was not precise enough during this pull to confidently confirm a result in the 7s. This reflects the speed data reported by the phone, not necessarily a lost connection. Devim GPS reports the uncertainty so you know when a result should not be treated as exact. We agree this needs to be clearer, and we’ll improve how GPS quality and timing confidence are shown in the app in next version.

Developer apps

FAQ

What is Devim GPS?

Devim GPS is a performance timing application that uses your iPhone's GPS or a compatible OBD-II adapter to measure vehicle acceleration and distance. It provides detailed analysis of each run, including speed graphs, splits, and G-force.

Does Devim GPS require an account or adapter?

No account is required to use Devim GPS. You can start measuring performance using your iPhone's GPS alone. For enhanced accuracy and data, you can optionally connect a compatible BLE OBD-II adapter.

What kind of performance metrics can Devim GPS measure?

Devim GPS can time various speed ranges like 0-60 mph or 0-100 km/h, and measure distances such as 1/8 mile, 1/4 mile, or custom distances. It also offers automatic standing-start detection.

What data is available for analysis after a run?

After each run, Devim GPS provides speed graphs, splits, slope, altitude, G-force, route information, and indicators to help you judge the result. It also shows timing method and sample rates for transparency.

Is there an Apple Watch version of Devim GPS?

Yes, Devim GPS includes an Apple Watch companion app at no extra cost. You can follow live speed, measurement state, and recent results directly from your wrist. The Apple Watch GPS can function as a standalone speedometer.

What are the features of Devim GPS Pro?

Devim GPS Pro is a one-time purchase that unlocks core features like GPS + OBD analysis, multiple garage vehicles, side-by-side run comparison, CSV export, and unlimited saved runs. Online features like weather and wind data are included for two years.

How does Devim GPS handle user privacy?

Devim GPS is private by default, requiring no account. Saved runs remain on your device unless you choose to share or export them. Optional analytics are turned off by default.

Is Devim GPS certified timing equipment?

No, Devim GPS is not certified timing equipment. GPS and OBD readings can vary due to signal, device, vehicle, and environmental conditions. It is recommended to configure the app while parked and perform tests only in safe, legal, closed-course environments.