There are no device or impression level metrics available so all metrics available are at the aggregate level. The only way to achieve what you are talking about would be to measure with multiple sets of lookback windows, because it’s possible to change the lookback window to 1 day and capture the true number that converted from just the past day. I would not recommend doing this other than experiment as it will likely cause confusion and overhead. If you are aware of another platform that supports the exact thing you are asking for feel free to point it out to us so we can pass on feedback to product managers.
Thanks,
John