Vroomist vs Devim GPS

Vroomist turns your iPhone into a precision vehicle performance analyzer. Connect a RaceBox GPS, Dragy Lite device via Bluetooth for professional-grade measurements, or use your iPhone's built-in GPS. SPRINT MEASUREMENTS Measure acceleration times across any speed range. Built-in presets include 0-60 mph, 60-130 mph, 0-100 km/h, 100 - 200 km/h and dozens more. Create your own custom sprint specs for any speed range you want to test. DRAG RACING Track your 1/8 mile, 1/4 mile, 1/2 mile, and full mile times with trap speed readouts. Add custom distance targets to match your local strip. SLOPE-CORRECTED TIMES Every sprint and drag result includes a slope-corrected time that estimates your flat-ground performance. Vroomist divides each run into segments and corrects each one individually based on its actual elevation change — so hills, dips, and rolling terrain are all accounted for, not just the difference between start and finish altitude. GPS LOGGING Record full GPS sessions to capture every detail of your run — speed, altitude, G-force, and distance — all timestamped and stored locally. REAL-TIME CHARTS Watch your speed, G-force, and altitude update live on a customizable chart. Adjust the time or distance window, tweak G-force smoothing, set dead zones, and zoom in for a closer look. After a run, compare multiple measurements side by side with overlay charts. SHIFT & SPEED ALERTS Set a shift point and Vroomist beeps when it's time to shift. Set a max speed alert and get notified the moment you hit it. Both work in the background while you drive. WEATHER & DENSITY ALTITUDE Vroomist automatically captures temperature, humidity, barometric pressure, and density altitude with every measurement, so you can correlate performance with environmental conditions. SUPPORTED DEVICES • Dragy Lite (up to 25 Hz GPS, selectable 10/20/25 Hz sample rate) • RaceBox Mini (25 Hz GPS) • RaceBox Mini S (25 Hz GPS) • RaceBox Micro (25 Hz GPS) • iPhone Internal GPS (1 Hz) APPLE WATCH See your live speed, device connection status, and measurement results right on your wrist. DATA EXPORT Export individual results or bulk-download your entire measurement history as CSV files in a ZIP archive. Filter by measurement type and time range. Save chart images to your photo library. FULLY CUSTOMIZABLE • Metric or imperial units for speed, temperature, and distance • Custom sprint and drag specifications • Adjustable slow-run filters to automatically discard poor results • Chart draw rate, zoom, smoothing, and visibility toggles • Sound and haptic feedback options • Per-car measurement profiles PRIVACY FIRST Your data stays on your device. Vroomist stores everything locally with no cloud uploads, no accounts.

Devim GPS is an enthusiast-built GPS speedometer and performance timer for drivers who want to understand a run, not just save a number. Measure acceleration or distance with your iPhone, inspect the data behind the result, and compare runs with the context that matters. No account or adapter is required to start. MEASURE SPEED AND DISTANCE • Time 0–60 mph, 0–100 km/h, 100–200 km/h, or any custom speed range. • Measure 60 ft, 1/8 mile, 1/4 mile, 1/2 mile, 1 mile, or a custom distance. • Automatic standing-start detection waits for confirmed movement. • Use iPhone GPS on its own or connect a compatible BLE OBD-II adapter. • Hear spoken speed-threshold announcements and follow live speed in metric or imperial units. UNDERSTAND EVERY RUN • Review speed graphs, splits, slope, altitude, G-force, route, and indicators that help you judge the result. • See the timing method, sample rates, signal context, and other evidence behind the time. • Organize results by vehicle and add photos and notes. • Build a clean share card and decide whether to include the graph, speed splits, or location. IPHONE AND APPLE WATCH • The Apple Watch companion is included at no extra cost. • Follow live speed, measurement state, distance progress, trip statistics, and recent results from your wrist. • Away from the iPhone, Apple Watch GPS works as a standalone speedometer. Recording or saving a measurement requires the connected iPhone with Devim GPS open. DEVIM GPS PRO Devim GPS Pro is a one-time purchase. Its core Pro features remain unlocked: GPS + OBD analysis, multiple garage vehicles, side-by-side run comparison, measurement CSV export, and unlimited saved runs. Weather, wind, and other online Pro features are included for two years from the purchase date where services are available. OBD compatibility depends on the vehicle and adapter; a compatible BLE adapter using ELM327-style commands is required. PRIVATE BY DEFAULT No account is required. Saved runs stay on your device unless you choose to share or export them. Optional analytics is off by default. GPS and OBD readings can vary with signal, device, vehicle, adapter, phone position, slope, and conditions. Devim GPS is not certified timing equipment. Configure the app while parked, secure the phone, and perform tests only in safe, legal, closed-course environments. Never operate the app while driving.