For checking stats, the iOS app works fine.
I just checked my stats for today, and I get individual entries where the amounts are different - so for the same file I showed one at 38 cents, one at $2.85 and one at $16.80. However if there are multiple sales for a file for the same amount, you'll just see 2 for a total of 76 cents (for example)
Updated to correct what I wrote. The iOS app doesn't help if you have multiple SODs of different amounts in a single day. It adds the amounts together and shows you totals.
Today I had two SODs for a total of $1.46 on an image. In addition to 73 cents not being a number I have seen before for an SOD download, I remembered seeing a number this morning where there was only one download. This was one at 59 cents and one at 87 cents. If there are lots of SODs for an image, it could be almost anything. Here are some amounts for SODs I've seen just in October and November...
0.38, 0.45, 0.51, 0.55, 0.59, 0.64, 0.67, 0.71, 0.72, 0.75, 0.77, 0.82, 0.87, 0.89, 1.03, 1.47, 1.73, 1.80, 3.00 . . . and that's just the small SODs, presumably coming from the cheaper subscription packages. They must really be experimenting with pricing...