When deciding which monetization model is better for your app, it is important to consider factors such as your target audience, app category, competitors, goals, and resources. Generally speaking, if your app has a large and diverse market potential, a high viral potential, and a low cost of service with a clear value proposition, the freemium model is best. On the other hand, if your app has a niche and loyal market potential, a high retention potential, a high cost of service, and a strong customer relationship, the free trial model is preferable. Ultimately, it is important to experiment with different models and variations and track key performance indicators such as downloads, retention, engagement, conversion, revenue, and customer lifetime value.