I may view this more favorably than the average, because this is the sort of thing I bought an iPad for. Stand-alone (as opposed to internet-connection-dependent) animated virtual reference app I can have on hand as I study how things work.
Mind you, this high-rate review is for the concept. And my expectations that the improvements that can be made, will be. More items, particularly of home and car items. The finger controls could use some fine-tuning, especially the zoom function. And fix that to-small-to-read information text box.But all-in-all, well done.
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