Replay Video Introduction to testing By Meta Blueprint Published: Sep 1, 2023 Duration 3m Difficulty Advanced Rating 1 star 2 stars 3 stars 4 stars 5 stars Average rating: 0 0 No reviews Some effects are difficult to test in Meta Spark Studio, and you might encounter bugs on your device that don't show up in the Simulator. This lesson explains why testing effects on an actual device is so important.