- Free — 30 days
- Pro — 90 days
- Pro Plus — no limit
The period selector offers longer ranges than your plan keeps; beyond your limit there is simply no data to show.
For a seasonal business, year-on-year comparison needs Pro Plus. On Free, take a screenshot each month.
Why the limit exists
History costs storage, so it is one of the things the plans differ on. The period selector still offers longer ranges than your plan keeps; beyond your limit there is simply nothing to draw.
Working around it on Free
Take a screenshot of the 30-day figures on the same date each month. It is crude, but it gives you a year of comparison for nothing.
Seasonal businesses comparing this year to last need Pro Plus.