Which is better for someone who doesn't write code?
Base44 is the more contained of the two: apps, database, integrations and hosting are one product, and the free plan covers up to 5 apps on 25 message credits a month, so a non-developer can get a long way without making a decision about infrastructure. Lovable expects slightly more comfort with the idea of a repository — Git sync is on from the free plan, which is useful the moment something goes wrong and beside the point if you never intend to open the code. If nobody on the project reads code, Base44 is the smaller learning curve.