Frozen fruits are harvested and processed at the peak of ripeness thus retaining higher levels of nutrients when they reach consumption compared to their refrigerated and room-temperature counterparts. So long as the fruit is not frozen brick solid, if you enjoy eating produce frozen that is perfectly safe AND extremely nutritious. Frozen fruit makes a great snack on a hot day and a delicious dessert, as you may have already discovered. Bonus, as you mentioned, purchasing produce frozen is budget friendly. Bouzari A, Holstege D, Barrett DM. Vitamin retention in eight fruits and vegetables: a comparison of refrigerated and frozen storage. J Agric Food Chem. 2015 Jan 28;63(3):957-62. doi: 10.1021/jf5058793. Epub 2015 Jan 13. PMID: 25526594.