I don't use any kind of currency/stock app personally, so this one was a little challenging. That being said, it was also interesting, because I think I could take a look at what's required with a set of fresh eyes.

Most of the rebounds I had looked at didn't seem to have any way of filtering a specific time, which I would assume would be very important for something like this. The calculator would give live output based on your value in the left field, with the ability to switch.

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