How do I revert back to a previous version?

They should call it not-so-SimpeNote now. The whole value of this app was in its simplicity... now with all the new features Ive started experiencing sync issues. And the new larger font blows. If youre going to add all these additional features, at least add the ability to change the font size.

Dan Grigoras about Simplenote, v4.4.3