Apple Watch Series 9 vs Fitbit Inspire 3
The Verdict
Apple Watch Series 9 delivers a premium smartwatch experience with its vibrant 45mm LTPO OLED always-on display, comprehensive health monitoring including ECG capability, and powerful S9 processor enabling independent cellular connectivity and NFC payments. Fitness tracking and sleep monitoring excel across both devices, though the Apple's integration with iOS and extensive app ecosystem justify its premium positioning. Fitbit Inspire 3 serves budget-conscious users exceptionally well, offering essential health metrics, remarkable 10-day battery life versus Series 9's 18 hours, and genuine lightweight comfort at just 20 grams. However, it sacrifices advanced features like ECG, GPS, and meaningful processing power. For serious athletes or iPhone users wanting comprehensive fitness data and seamless device integration, Series 9 rewards the investment. Those prioritizing simplicity, battery longevity, and basic activity tracking will find Inspire 3 entirely adequate.
Who Should Buy
Buy the Apple Watch Series 9 if…
- →S9 chip enables on-device Siri and the new Double Tap gesture
- →Comprehensive health suite: ECG, SpO2, temperature, crash detection
- →Brightest Apple Watch display at up to 2000 nits
Buy the Fitbit Inspire 3 if…
- →10-day battery life — charge once and forget for well over a week
- →Color AMOLED display is a huge upgrade over Inspire 2's grayscale
- →Ultra-lightweight at 20 g — perfect for sleep tracking
Category Scores
Pros & Cons
Apple Watch Series 9
Pros
- S9 chip enables on-device Siri and the new Double Tap gesture
- Comprehensive health suite: ECG, SpO2, temperature, crash detection
- Brightest Apple Watch display at up to 2000 nits
- Seamless deep integration with iPhone and Apple ecosystem
- Wide variety of bands and cases for personalization
Cons
- 18-hour battery life requires daily charging
- Only useful if you own an iPhone — no Android support
- Cellular model adds significant ongoing carrier cost
- Incremental upgrade over Series 8 for existing owners
Fitbit Inspire 3
Pros
- 10-day battery life — charge once and forget for well over a week
- Color AMOLED display is a huge upgrade over Inspire 2's grayscale
- Ultra-lightweight at 20 g — perfect for sleep tracking
- SpO2 and skin temperature sensors at just $99
- 5ATM water resistance for swimming
Cons
- No built-in GPS — relies on phone GPS for outdoor tracking
- No NFC — cannot use Fitbit Pay
- Tiny screen limits notification readability
- Best health insights locked behind Fitbit Premium subscription
- No always-on display option
Full Specifications
| Spec | Apple Watch Series 9 | Fitbit Inspire 3 |
|---|---|---|
| Software | watchOS 10 | Fitbit OS |
| Body | ||
| Weight | 38.7 g (aluminum) | 20 g |
| Case material | Aluminum or stainless steel | Plastic resin |
| Water resistance | WR50 / EN13319 | 5ATM |
| Health & Sensors | ||
| ECG | ||
| SpO₂ | ||
| Skin temperature | ||
| Heart rate | ||
| Sleep tracking | ||
| Battery | ||
| Battery life | Up to 18 hrs, up to 36 hrs Low Power Mode | Up to 10 days |
| Display | ||
| Size | 45 mm | 0.73 inches |
| Type | Always-On Retina LTPO OLED | AMOLED |
| Always-on display | ||
| Resolution | 484 x 396 | 256 x 124 |
| Processor | ||
| RAM | 1 GB | — |
| Chipset | Apple S9 SiP | Fitbit custom processor |
| Connectivity | ||
| GPS | ||
| NFC | ||
| Wi-Fi | ||
| Cellular | ||
| Bluetooth | 5.3 | 5.0 |
Related Comparisons
This comparison is based on verified manufacturer specifications covering display, performance, camera, battery, and build quality. Scores are generated by analyzing specs across weighted categories on a 10-point scale. Learn more about our methodology.
Explore more in smartwatches, see all Apple products or all Fitbit products. View full details for the Apple Watch Series 9 or the Fitbit Inspire 3.