evmetrics
Deep diagnostics for your EV or JLR
Live battery telemetry, charging graphs and professional reports — for Jaguar, Land Rover and popular electric vehicles.
iPhone & iPad
For EV owners & enthusiastsConnect with a Bluetooth LE OBD adapter (about $30-$45 or £20-£35; classic Bluetooth ones don't work on iPhone). Watch the live dashboard and charging curve, and with Pro check your battery's state of health and decode a warning light.
- Live dashboard, charging curve and Full Vehicle Scanner
- Climate, tyre pressure and drivetrain data, and widgets
- Battery health and fault codes Pro
- Journeys with route maps, and Track Day lap timing Pro
- Pre-purchase audit and shareable reports Pro
$8.99 once. Optional Pro $20.99 a year. What's included
Join the public beta on TestFlight → Coming to the App StoreMac & Wired USB
For workshops, specialists & fleetsPlanned for 2027, not on sale yet. Wired ELM327 USB adapters for multi-hour sessions, full vehicle scans, Mode $06 on-board monitor tests and printable reports.
- Wired USB for long, uninterrupted scans
- Full vehicle scan across every mapped ECU
- Readiness monitors and Mode $06 test results
- Workshop checklists and Fleet cost tracking
- Printable reports for customers
The app, and optional Pro
The US comes first; other countries follow, with no dates yet. Email us to hear when it reaches you.
The app
$8.99 once (£7.49 when it reaches the UK)- Live sensor dashboard tailored to your car
- Full Vehicle Scanner
- Charging graph and charging history
- CAN Monitor and Vehicle Power
- Home Screen and Lock Screen widgets, and Siri readings
- Demo Mode
EvmetricsOBD Pro
$20.99 a year, optional (£17.49 when it reaches the UK)- Health: battery state of health, warnings, misfire scan
- Trouble Code Scanner: read and clear fault codes
- Diagnostic Reports, Battery Health Report and Vehicle Audit
- Garage, Journeys, Track Day and CarPlay
- Workshop, Fleet and Feature Advisor
- PID Scanner and Reverse Engineering tools
Pro renews automatically each year until you cancel: see the Terms. You also need an OBD adapter that works with iPhone: see the adapter guide.
Everything your vehicle is hiding
Standard OBD2 apps read emission PIDs. EvmetricsOBD uses manufacturer UDS Service 22 commands to read data those apps can't reach. Features marked Pro need EvmetricsOBD Pro.
HV Battery Deep Scan
Pack voltage, current, state of charge, state of health, individual cell voltages and battery temperatures — from the actual BMS, not OBD gateway proxies. State of health is in Health, part of Pro.
Charging Graph
Real-time power vs SoC curve plotted as you charge. See exactly where your battery's taper begins and compare sessions over time.
Diagnostic Reports Pro
Complete HTML reports covering all OBD modes ($01–$09): freeze frames, O2 sensors, IUPR counters, emissions readiness and EV battery sections, with optional NHTSA vehicle info. Each code shows its real status (pending, permanent or historical), its guidance and its history, including manufacturer HV-battery codes from the BECM. The report adds the Integrity Audit, consistency checks, "may be stuck" markers on readings and a per-cylinder misfire summary, and a scan that failed says so instead of reporting no codes.
Battery Health Report Pro
A one-page PDF of an EV's battery from the Health tab: state of health with its history, measured against nominal capacity, battery temperature, cell voltage min, max and spread, pack voltage and current, isolation resistance against its expected minimum, and a front-to-rear strip of module temperature sensors marking any that reported a fault in the last 30 days. Every figure is the car's own BMS reading. Useful when buying or selling, but it is a report, not a certificate.
Full Vehicle Scanner
Sweep every mapped ECU in the vehicle — BECM, HVAC, TPMS, TCM, E-Diff and more — and see which modules respond and which are silent. Interrupted scans save their progress and resume where they left off. Like every tool that sweeps the bus, it runs only while the car is parked and stops if it starts moving.
Live Sensor Dashboard
Customisable live view of all visible sensors: temperatures, pressures, voltages, speeds. Sensor categories are specific to each vehicle template.
CAN Bus Monitor
Track TX/RX counters per CAN bus in real time. See which protocol is active, how many frames are positive, and switch buses without disconnecting.
Emissions Readiness & Mode $06 Pro
Every readiness monitor is read from the engine individually, including the one that catches people out: supported but not yet complete, which fails an emissions test on a car with no faults at all. This drive cycle sits next to the figures since codes were cleared, so you can see how much further to drive, and the warning light is read as a light. Mode $06 test results come in real units, and a stored freeze frame is captured into the report.
VIN Decode
The VIN is read from the car and embedded in every diagnostic report. Turn on the optional NHTSA lookup in Settings → Privacy to add make, model, year and trim; it is off by default, so the VIN never leaves your device unless you ask.
iCloud Cross-Device Sync Pro
Seamlessly sync your Garage vehicle records, Workshop templates, active jobs, and Fleet costs across iPhone and iPad, and the Mac edition when it arrives.
Known Conditions Database Pro
Contextual alerts cross-reference OEM campaigns. A charge limit that comes from a known manufacturer recall is explained as that, with its reference, instead of showing up as a new fault.
Reverse Engineering Tools Pro
Developer mode with PID scanner, raw AT command console and CAN broadcast capture. Send us a log and we use it to add support for your car. These tools only run while the car is parked.
Journeys Pro
Every drive is archived automatically — the live power curve, energy used, regen recovered, distance and duration, with the route on a map. A paused drive stays in the header until you resolve it, and you can Resume a recent journey to keep recording onto it as one continuous trip, even while another drive is recording (you confirm first, and the drive in progress is replaced). Synced via iCloud and exportable as a .evmjourney file.
Track Day Pro
GPS lap timing with a start/finish line you drop on a map, set where you stand, or let the app find on its own, plus sectors and a live delta to your best lap. A dark full-screen dashboard shows RPM or power, throttle and brake, temperatures and G-force, with a friction circle that can show where your G has been all session. Any car works through fast batched OBD2 requests, and EVs add pack and motor data. Share a lap card, PDF, CSV, GPX or .evmtrack file; the Track Dial widget and Live Activity keep your lap times on show.
Workshop Pro
Reusable checklist templates — Full Service, MOT Check, a cost-ordered Engine Diagnostic — applied per vehicle with red / amber / green on every item. Build your own and share as .evmwt files.
Fleet Pro
Track every vehicle's costs — expenses plus scheduled, recurring events — rolled into totals spent, what's due in the next 12 months and a projected annual run-rate. Exportable as .evmfleet.
Feature Advisor Pro
A read-only catalogue of dealer-activatable features your JLR or Porsche could receive — CarPlay, Configurable Dynamics, adaptive cruise, ambient lighting, and on a Porsche Sport Plus without Sport Chrono, InnoDrive, cluster personalisation and full-region PCM maps — with the car probed for what's active, present or missing. The app never codes anything; it refers you to a specialist.
Widgets, Siri, Shortcuts & CarPlay
Nine Home Screen and five Lock Screen widgets, two Live Activities in the Dynamic Island, a Connect to Car control for Control Center, the Lock Screen and the Action button, nine Siri shortcuts, twenty Shortcuts actions, Spotlight search and a CarPlay Power Monitor (part of Pro). Ask “what’s my battery level” with the phone locked, or connect the moment CarPlay starts. See every integration →
Pack Temperature While Charging
The live charge shows the hottest battery module, banded green, amber or red, with the pack average, the peak so far and whether the whole pack is warm or one module is running away from the rest. If it goes red you are alerted, even with the phone locked, with advice to stop and let it cool; once per excursion, so a reading sitting on the limit can’t nag. Needs a car that reports its module temperatures.
CO₂ & Period Totals
Journeys, charges and the Fleet carry a CO₂ figure: what a petrol or diesel trip burned at the tailpipe, and the grid carbon behind an EV’s charging at an intensity you set, so the two never double count and add up to one honest fleet total. The Journeys and Charging lists can collapse into monthly or yearly totals and drill back in. Journey and Fleet figures need Pro.
Parking Sensor Check
Jaguar I-Pace, XF and other JLR models: every ultrasonic parking sensor read live from the Parking Aid Module and drawn around the car, one per bumper corner, centre and side, adapting to how many the car has. Each shows Clear, or a reading as something comes into range. Hold your foot in front of each sensor in turn and the one that never reacts is the one to replace, no dealer visit needed to find it.
See it in action
The live drive header and an archived journey, captured on an iPhone.
Three ways to connect
ELM327-compatible adapters, no proprietary hardware. On iPhone and iPad it has to be Bluetooth LE or Wi-Fi: which adapter?
Bluetooth LE
The default on iPhone and iPad. Needs a Bluetooth LE adapter: classic Bluetooth ones don't work on iPhone.
USB Serial
Wired FTDI/CP210x/CH340 adapters for sustained workshop sessions. Planned for the Mac edition; not available on iPhone or iPad.
Wi-Fi
TCP socket connection to Wi-Fi ELM327 dongles. Useful where BLE range is insufficient. Auto-reconnects and can auto-join the adapter's network on iOS.
23 vehicle platforms
JLR I-Pace and XF available now, plus a Generic OBD-II template for any car. Hyundai E-GMP, VW MEB/MQB, Ford, the petrol Mustang, American Jeep, Dodge and Ram, pre-CAN Porsche 911, Boxster and Cayman, Toyota, Mazda, Mercedes and more carry unvalidated templates while we confirm them on real cars.
What it looks like in practice
Example scenarios, and real investigations on our own Jaguars.
See use cases →