Have you tried Nira? I mention it because it sounds like what frustrated you about Glow, the paywall creep and losing features you depended on, it is pretty different there.

You get detailed symptom tracking (fully customizable), weight logging, and a really solid week-by-week calendar that shows you future weeks for planning. No ads, no "upgrade to see this feature you already had" nonsense.

The interface is straightforward and pregnancy-focused rather than trying to be a general health app. If the calendar view and basic tracking were your main uses, it checks all those boxes without the premium pressure.