In medium saucepan, combine berries, Swerve, and water. Cook over medium heat until berries are soft enough to mash with a fork, about 5-10 minutes. Mash to desired consistency.
Remove from heat and stir in the chia seeds. Let cool.
Transfer to a glass jar and refrigerate for a few hours, until set. Store in an airtight container in the refrigerator for up to 3 weeks.