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(Credit: Krueger Systems)
For the more technical among us who love to build circuits, but either can't do so on the go or don't have all the right components, this is probably the app for you. Build a circuit, measure voltages and currents, or view how transient circuits map through the in-built oscilloscope.
(Credit: Transport for NSW)
Live Traffic NSW
Map apps are great for predicting traffic, but they're not always right. What about actually seeing what the road looks like before setting out? At least in NSW, you can do just that, even as you're walking across the parking lot with your phone.
Broken down, and you have no idea where you are? NRMA's app uses your smartphone's GPS abilities to let roadside assistance find out where you've gone wrong.