Realtime Charts for Torque Pro

Review by eFreeware

If you already run Torque Pro with a wireless OBD2 adapter in your car, Realtime Charts is the kind of add-on that turns a dashboard of numbers into something you can actually study. It is a plugin, not a standalone app, and it exists to draw live graphs of what your engine is doing: up to ten sensors at once, plotted as series on a phone or tablet screen. The people most likely to want it are automotive hobbyists, tuners and DIY mechanics who care about how a car behaves rather than just what fault code it throws.

The pitch is straightforward. Instead of watching one gauge at a time, you build charts that combine the readings you care about, name them, color them and keep them. You can save sessions and reload them later, export the numbers to a spreadsheet, or take a screenshot to post on a forum. It is a $2.49 purchase with no ads and no in-app purchases, which for a tool in this niche is a refreshingly simple arrangement.

What appeals to me most is that it treats charting as a serious job rather than a novelty. Sampling can be set from a tenth of a second up to ten seconds, axes can scale themselves or stay fixed, and series attributes can be changed while a chart is running. That level of control is what separates a diagnostic aid from a pretty display.

Live graphing for tuning and diagnosis

The core of the app is real-time plotting. Sensors such as RPM, speed, fuel economy, horsepower and torque can be shown together, each as its own series, so you can see how one value moves in relation to another as you drive. The developer puts the ceiling at ten sensors on a single chart, which is enough to follow a chain of related readings without the graph turning into spaghetti.

For tuning work, the interesting part is the correlation. Watching RPM climb while a calculated torque figure lags, or spotting a fuel economy dip at a steady cruise, is far easier on a shared timeline than across separate gauges. Because the sampling rate is adjustable, you can choose a fine resolution for a short pull or a coarser one for a long highway run, and the x-axis can be labeled with the time of day so a saved session still makes sense weeks later.

Running averages can be graphed alongside raw values, and you can set upper and lower limits on a sensor. Dynamic scaling lets a series be multiplied by factors from 0.01x up to 100x, which helps when two readings live in very different numeric ranges. Units follow Torque's own preference, so English or metric display is handled at that level rather than being re-entered here.

Scatter plots, triggers and recorded sessions

Two features push this beyond simple line charts. The first is scatter plot analysis, which can run live or over a session you have already saved. Rather than watching values over time, you look at how one sensor relates to another across a whole run, which is a useful way to examine the shape of an engine's behavior instead of a single moment in it. Frequency plot analysis is available in the same vein.

The second is threshold-triggered capture. You can tell the app to start recording when one or more sensors meet criteria you set, for example when RPM reaches a certain figure, when speed passes a given value, or when both conditions hold at once. That means you can leave the app running and let it collect the specific events you care about, rather than scrubbing through a long recording afterward.

Recorded data can be saved to the device and loaded again for review, and CSV export makes it possible to open the numbers in a spreadsheet for your own calculations. Sessions can be paused and resumed with time compensation, so a break in the middle does not distort the timeline. Trip data can also be saved automatically when the engine is shut off or you end the session, and the app manages storage space for those trips on its own.

Building charts you can keep and share

Charts here are meant to be reused. You can create up to 100 of them, each with its own sensor combination, sampling frequency, colors and series attributes, so a setup you build for one diagnostic purpose stays available for the next time you need it. Sensors can be added to or removed from a chart while it is running, and color and line attributes can be adjusted on the fly, which saves stopping and restarting a session to fix a display choice.

The app includes simple and custom color selection tools, which matters more than it sounds when several series share one plot. Screenshots can be captured and shared on social media or automotive forums, and chart configurations can be passed to friends, so a useful setup does not have to be rebuilt from scratch by someone else.

There is also an auto-pause option that halts the chart when the vehicle is stopped, which keeps idle time from padding out a recording. Scrolling and zooming work with finger gestures or dedicated buttons, and the y-axis can either scale itself or be pinned to fixed values when you want consistent comparisons between runs.

What you need before it will run

This is the part to read carefully, because Realtime Charts will not do anything on its own. It works as an add-on to Torque Pro, and the developer is explicit that Torque Pro must be installed on the same device. You also need a wireless OBD2 adapter in the car. Without both pieces in place, there is nothing for the plugin to read from.

The developer points to Ian Hawkins' Torque site for setup help and links to an install video covering OBD2 devices, and mentions Carista's adapter as an option. Supported Android versions start at 2.3 and above, and the developer lists testing across a range of older and newer devices with a Carista Bluetooth adapter. The app has been around for a while and has been updated since.

Simulation mode is a nice touch: it lets you build and arrange charts with no ECU connected. That is useful for preparing a configuration indoors before you get to the car, and it means you can learn how the chart editor behaves without burning fuel to do it. The app can also keep recording sensors while it runs in the background, so you can switch to gauge or navigation apps during a session.

Where the appeal really sits

I would expect this to fit people who already treat Torque Pro as a serious tool. If you are chasing an intermittent fault, comparing before-and-after results from a modification, or trying to understand why fuel economy shifts under certain conditions, the combination of multi-sensor graphing, threshold triggers and saved sessions covers ground that a gauge display does not. The scatter and frequency analysis in particular is aimed at someone who wants to examine relationships between readings, not just watch them move.

For someone who already owns the adapter and the Torque Pro app, that is a modest addition to an existing setup. It has drawn more than 10,000 installs and holds a 4.2 average across 377 ratings, which suggests a settled audience rather than a passing novelty.

The developer also states that the app collects no personal, location or usage data, which is a sensible note for a tool that spends its time plugged into your car. The narrowness is the point: this is a charting layer for one specific host app, and it does that job in depth rather than trying to be a general-purpose dashboard.

A focused add-on for Torque Pro owners

Realtime Charts is worth the $2.49 if you already have Torque Pro and a wireless OBD2 adapter, and you want to see engine data as trends rather than single readings. The ability to plot ten sensors together, trigger captures on conditions you define, analyze scatter and frequency relationships, and export the results to a spreadsheet gives it real depth for tuning, diagnosis and general curiosity about how a car behaves.

It is not a starting point. Anyone without the host app or the adapter has nothing to plug this into, and simulation mode, while handy, is a design tool rather than a substitute for a live connection. For the hobbyist, the professional or the DIY mechanic who already has that hardware in place, this is a well-specified companion that earns its small price through the range of control it offers over how data is captured and displayed.