
Fitbit Charge 2
Score: 78/100
Fitbit Inspire 3
Score: 77/100Rankings

The Fitbit Charge 2 delivers continuous PurePulse heart-rate monitoring, 4-day battery life, and water resistance up to 50 m, complemented by phone-connected GPS. Its limitations include a small tap-activated OLED display and lack of built-in GPS or SpO₂ monitoring. Ideal for users seeking a reliable, brand-trusted tracker for basic fitness and sleep tracking.

The Fitbit Inspire 3 is a slim, lightweight fitness tracker that excels with a 120-hour battery and built-in GPS. Its trade-off is a tiny screen and lack of advanced smartwatch features. Best for users who want basic health monitoring and swimming capability without a bulky device.
| Attribute | ![]() | ![]() |
|---|---|---|
— | 120 hoursbest | |
| ↓ lower better | 31.8 gbest | 108 g |
0.72 inbest | 0.7 in |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Battery & Power(1) | ||
Battery Life (hours) | 4 days hours | 120 hours |
Build & Design(1) | ||
Weight (g) | 31.8 g | 108 g |
Display(2) | ||
Screen Size (in) | 0.72 in | 0.7 in |
Display Type | OLED | AMOLED |
Connectivity(1) | ||
Built‑in GPS | false | true |


Products in the top-left offer the best value (high score, low price).

Professional reviewers commend the Charge 2 for its surprisingly accurate heart-rate tracking that aligns with chest-strap references, its comprehensive suite of fitness and sleep features, and its solid 4-day battery life.
Everyday users value the 24/7 heart-rate monitoring, comfortable small blue band, auto-sleep and exercise detection, and the long battery that minimizes charging.