Just cuz I love this idea and the app so far:
If your losing a high percentage of customers after the free trial ends you could get away with a freemium model by allowing customers to have 2-3 habits and 1 goal (or be stuck on the starter island) and only by upgrading unlock full feature usage. If you’re worried about too many people only doing only the free version I would’ve still paid tbh, just don’t make the free version so constrained it turns people off from the app like music apps, their free plans are atrocious.
