Believe it or not, you don’t need a special gadget to pit cherries. Using a sharp paring knife, cut each cherry in half around the pit and remove the pit. Work over a bowl to catch all the precious juice! How much lime juice you add will depend on how sweet your cherries are, so taste as you go.
Pit the cherries and place in a large bowl. Toss with the sugar and let sit until the cherries release their juice, about 15 minutes. Purée the mixture in a blender until smooth, and then add the lime juice to taste.
Pour the mixture into ice pop molds and insert sticks. Freeze until firm, at least 6 hours or up to 1 week.
To unmold the pops, run hot water over the outsides of the molds for a few seconds, then gently pull the sticks.