show datetime (and/or timeago) of entry for data points
Especially in the Android app (where I will tend to report for goals which require frequent irregular reporting), it would be useful to see the datetime at which each data point was entered.
This would make it easier to look at the data points already entered and avoid over/under-reporting. In particular the question "did I just report a minute ago or do I still need to?" is much easier to answer when the data points look like:
1m ago 1
3h ago 2
6h ago 1
...
than like:
2012.06.06 1
2012.06.06 2
2012.06.06 1
...

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Tom Jack commented
I no longer think this is important. The obvious solution in my case was to just make the reporting regular (say, report once every day at midnight).
Timestamps don't make much sense since the date displayed now is not necessarily the date entered.