Rev is an application for the iPhone and iPod Touch that monitors, displays, and records real-time vehicle data. By communicating directly with your vehicle's ECU via its OBD-II port, Rev is the first iPhone and iPod touch application to give you complete access to everything you want to know about your vehicle.
*Supported metrics are specific to vehicle make and model.
See our Features page for all the details.
Save a trip to the mechanic. Rev also reads and lists engine codes (like those responsible for your Check Engine/MIL light), and allows you to reset them as well!
Rev communicates directly with your vehicle's ECU via the ElmCanII-WLAN device. This great piece of hardware
sends your data to Rev wirelessly—you can place your iPhone or iPod touch wherever you want. See our
Hardware page for all the details.
Check out some great videos of Rev.
Rev: a brief introduction (new window)The iPhone is a powerful computing platform, and Rev takes advantage of all the iPhone's built-in technology to provide interesting metrics about your vehicle. These built-in metrics, available without the aid of additional hardware, include:
Rev gives you access to lots of vehicle metrics, communicating via the ElmCanII-WLAN device to extract highly accurate, real-time data directly from your vehicle's ECU. Those metrics include:
Data is great, but not very useful without a way to visualize it. Rev provides beautiful visual representations of everything about your vehicle:
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| Gauge: Displays a moving needle and LED display to show the current value of the metric. Themes allow you to select an empty backdrop or different gauge colors. A double-tap zooms in for best readability. | Graph: Displays current value over time. The graph units represent the proper minimum/maximum values for the metric. Acceleration values are also plotted against the selected metric. Double-tap to zoom in. | Accelerometer: view forward/lateral acceleration G's with local minima and maxima. | Map Track: use gps to correlate position on a track and forward acceleration. Red represents braking, green represents acceleration. |
You talked, we listened. Rev now provides data-logging. Here is a quick overview:
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| Record multiple metrics at the same time with the Multi-Metric Logger. | While recording, tap and hold to display the color key. Double-tap to set reference markers. | Any metric can now be recorded, reviewed and exported via email. |
Want to know why your Check Engine light is on? Rev will tell you why!
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| View the status of your Check Engine light. | View a detailed list of trouble codes and other diagnostic pending codes. | Reset your codes and turn off your Check Engine light with a single touch. |
Rev communicates with your vehicle via its physical OBD-II port. Interfacing with this port requires an OBD-II hardware device that supports the 802.11/WiFi interface on the iPhone and iPod touch.
Our device choice is the revolutionary ElmCanII-WLAN from CarCode-Müller. They have been developing great OBD-II hardware since 2001. In addition to providing serial and USB OBD-II hardware, they were the first company to bring Bluetooth OBD-II to the world market, and in November 2007, CarCode-Müller became the first to create a WiFi-based OBD-II device. One year later, DevToaster has worked closely with CarCode-Müller to create the next version of this great device, providing a much smaller new enclosure and engineered with the latest in WiFi and OBD-II technology.
The ElmCanII-WLAN is a wireless interface to your vehicle's own computer, connected and supported by a standard called OBD-II. This device allows Rev to connect to your vehicle through an extremely fast wireless interface.
Check out the great features of the ElmCanII-WLAN:
Perhaps our most-asked question has been "is my vehicle supported?". We cannot answer that question exactly because each vehicle model is set up differently by its manufacturer.
In the United States, all vehicles sold after 1996 (1998 in Canada) were required to have OBD-II support. That means if you're driving a 1996 or later vehicle in the United States (1998 in Canada), your car is virtually guaranteed to be supported. The number of metrics supplied by the vehicle may vary, but you are certain to get the important ones required for the operation and evaluation of the vehicle (speed, RPM, etc) as well as support for reading and clearing trouble codes.
If your vehicle was made before 1996, or if you're just not sure whether or not OBD-II is supported by your vehicle, check with your local dealer or service garage.
DevToaster does not sell the OBD-II hardware to Europe. For all European hardware sales, please order from CarCode-Müller. For sales outside the United States, Canada, or Europe, contact us at DevToaster and we will assist you.
Adding WiFi-broadcasting hardware to your automobile is probably a paradigm shift for most auto-enthusiasts. We ask that customers consider the following when purchasing WiFi automotive hardware for perminent installation:
Quality is paramount to us here at DevToaster, and that philosophy extends to our choice in hardware. Every single device we ship has been precision-engineered and tested by multiple engineers. Your specific device did not leave the factory without full functional testing. This is rare in the age of mass-produced cheap components from China.
DevToaster offers a 3-year warranty on all hardware. However, CarCode-Müller has shipped thousands of units since switching to their German manufacturer in 2005. Not one has been returned!
Bluetooth and wired USB (dock connector) data transfer protocols are off limits to iPhone developers. The only inter-device communication protocol available requires WiFi connectivity. Aside from being the only hardware option for the iPhone (at the moment), OBD-II WiFi offers some technical advantages over Bluetooth and USB:
We provide the 90 degree OBD-II cable for free with the hardware. It is much better than the alternative straight cables for long term driving because the straight cables stick out very far. If the 90 degree neck does not fit your steering-column OBD-II port, there is usually an extra OBD-II port on the ECU itself to which the cable might be able to connect. Alternatively, OBD-II cables are fairly cheap and available worldwide.
Rev Lite is a lite version of Rev. It does not connect to OBD-II interface hardware. Rev (full) communicates with OBD-II interface hardware.
Rev can only read metrics that are available via the OBD-II hardware. Likewise, the OBD-II interface hardware can only read metrics that are available via the OBD-II protocol supported by the vehicle manufacturer. If a metric is not available in Rev, the reason is because the vehicle does not present the data for that metric on the OBD-II bus.
Definitely not! The ElmCanII-WLAN broadcasts its own wireless network in Ad-Hoc (recommended for use with Rev) or standard infrastructure mode, so your wireless connectivity is available wherever you are.
Rev communicates with the ElmCanII OBD-II WLAN device to read vehicle OBD metrics. All cars and light trucks sold in the United States after model-year 1996 support OBD-II and will work with Rev. Manufacturers are only required to adhere to a subset of the OBD-II standard, so some advanced metrics may be unavailable for your vehicle, but Rev will dynamically adapt to the sensors supported by your vehicle.
We encourage users of Rev Lite (and all Rev versions) to provide feedback via our Feedback page.
'Metrics', in a scientific sense, refer to parts of a system of measurement. In Rev terms, 'metrics' are vehicle measurements.