On X, cadence decides. Posting once a day leaves you invisible to most of your own followers, simply because they were not in the app at that moment. Three to five posts a day is not excessive — it is the condition for anyone noticing at all.
Keeping that frequency spontaneously does not work alongside a full day job. Writing ahead does: you collect thoughts across the week, phrase them in one block and distribute them over the coming days — the feed stays active without you living in the app.
For the DACH region there is more: EU servers in Frankfurt, billing in euros with a proper invoice including VAT, interface in German. And one price for all channels — X costs nothing extra when LinkedIn and Instagram are already running.