I'd suggest performing a mandatory check right after each fresh swap. Otherwise the displayed info is obsolete, e.g. it looks like there is 87% fresh swap written, when in fact it is close to zero.

Also, a mandatory check is performed each time FlopSwap is started by the user, which refreshes the info. Since Flopswap thus doesn't require a Check button press to update the info at app start, it makes sense to update the info after a fresh swap as well.

Finally, note that a mandatory check will not add much time to the fresh swap operation; a fresh swap typically takes minutes, and a check takes a few seconds.