Great App
While it does lack some features such as the charge of each element, this app is still great and very useful, especially for class. And for those complaining of the size of the app, if you watch the video of this app, he explains that they used a very high quality lens that took 15mp pictures. Each element was roughly 2gb of raw data before they compacted it so 1.7gb is nothing.
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The Elements by Theodore Gray, v1.0.2.1