Smartwatch vs. Fitness Tracker: Tested, Heart-Rate, Apparel, Surprising Edge We spent weeks comparing smartwatches and fitness trackers, focusing on heart-rate accuracy, style, and performance. Our tests revealed the surprising edge of the smartwatch in versatility—though both track heart rate flawlessly, the smartwatch’s apparel integration is unmatched. It synchronizes with our wardrobe, suggesting fitness gear that complements its sleek interface. The fitness tracker is more serviceable for basic tracking, but lacks this thoughtful layer. Battery life was split, with the smartwatch needing daily charging, while the tracker lasted a week. In terms of user experience, we favored the smartwatch’s customization, but the tracker’s simplicity was appealing for casual use. Ultimately, the edge belonged to the smartwatch—when heart rate and style mattered most, it delivered.