How does the trial work?
The trial gives you 14 days of Lonzo Agenda free — the same plan it converts into, so nothing changes when it converts — and you're charged only at conversion, at $4.99/month. Cancel before the trial ends and you won't be charged.
You can't start it yet. The app is not yet on Google Play, and the trial is offered at Google Play's checkout — so there is nothing to start today. If we invited you to try Lonzo before then, your access is given rather than trialled: it isn't billed, it doesn't expire, and it doesn't use up the one trial your account gets. That is still yours to start when the listing is live.
A payment method is collected up front, and there is one trial per account. If the trial isn't converted, the account has no product access until you subscribe — your data is retained, so subscribing later restores your account rather than restarting it. Trials started through the app store are also subject to that store's trial terms; see the Subscription & Billing Terms.
See also: How do I cancel my subscription? · How do I subscribe?