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Apple Watch Series 9 & Fitbit Sense 2 have some important differences, both models are popular for their health tracking, smart features, and daily utility. The Apple Watch Series 9 is Apple’s latest GPS smartwatch with advanced health sensors and exclusive features like the double tap gesture and on-device Siri. The Fitbit Sense 2 focuses more on wellness, offering tools for stress management, sleep tracking, and impressive battery life. Let’s explore their differences and similarities to find your perfect fit!
Feature-by-Feature Breakdown
Processor:
- Apple Watch Series 9 has the S9 SiP with a 4-core Neural Engine that speeds up system performance and enables advanced features like on-device Siri.
- Fitbit Sense 2 uses a proprietary processor designed for basic smartwatch tasks and efficient battery use.
Winner:
Apple Watch Series 9
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Display:
- Apple Watch Series 9 includes an Always-On Retina LTPO OLED 1.9 inch display that maintains high visibility in all lighting conditions.
- Fitbit Sense 2 uses an 1.58 inch AMOLED display that turns off by default to conserve battery.
Winner:
Apple Watch Series 9
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Brightness:
- Apple Watch Series 9 supports up to 2000 nits of brightness that improves visibility in direct sunlight.
- Fitbit Sense 2 reaches up to 1000 nits, which is still usable outdoors but less vibrant.
Winner:
Apple Watch Series 9
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Operating System:
- Apple Watch Series 9 supports watchOS 10 and future updates that ensure long-term software compatibility.
- Fitbit Sense 2 runs Fitbit OS with limited third-party app support.
Winner:
Apple Watch Series 9
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Voice Assistant:
- Apple Watch Series 9 supports on-device Siri that processes commands quickly without internet connection.
- Fitbit Sense 2 supports Alexa and Google Assistant, but responses depend on a connected phone.
Winner:
Apple Watch Series 9
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Connectivity:
- Apple Watch Series 9 includes Bluetooth 5.3, dual-band Wi-Fi, and GPS that support seamless pairing and tracking.
- Fitbit Sense 2 includes Bluetooth and Wi-Fi but lacks dual-band Wi-Fi and latest Bluetooth standards.
Winner:
Apple Watch Series 9
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Health Features:
- Apple Watch Series 9 has ECG, Blood Oxygen, heart rate, cycling enhancements and temperature sensors that enhance health monitoring.
- Fitbit Sense 2 also supports ECG, SpO2, heart rate, temperature, and adds EDA for stress tracking.
Winner:
Apple Watch Series 9
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Speaker & Microphone:
- Apple Watch Series 9 includes a noise-reducing microphone and dual speakers that allow phone calls and Siri interaction.
- Fitbit Sense 2 has a microphone for voice assistants but no speaker for calls or audio playback.
Winner:
Apple Watch Series 9
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Internal Storage:
- Apple Watch Series 9 includes 64GB of internal storage that enables music downloads, app installs, and podcasts without your phone.
- Fitbit Sense 2 does not support onboard music or app storage.
Winner:
Apple Watch Series 9
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UWB (Ultra-Wideband):
- Apple Watch Series 9 includes a U1 chip that enhances location accuracy and enables features like precision Find My.
- Fitbit Sense 2 does not support ultra-wideband technology.
Winner:
Apple Watch Series 9
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Battery Life:
- The Apple Watch Series 9 offers 18-hour battery life that supports all-day use with advanced features enabled.
- Fitbit Sense 2 lasts up to 6+ days on a single charge depending on usage.
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Double Tap Gesture:
- Apple Watch Series 9 features double tap gesture that enables one-handed control for common actions.
- Fitbit Sense 2 does not support gesture controls.
Winner:
Apple Watch Series 9
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Specs at a Glance
| Feature |
Apple Watch Series 9 |
Fitbit Sense 2 |
| Display |
Always-On Retina LTPO OLED |
AMOLED Touchscreen |
| Display Size |
1.9 inches |
1.58 inches |
| Resolution |
396 x 484 pixels |
336 x 336 pixels |
| Display Brightness |
Up to 2000 nits |
Up to 1000 nits |
| Processor |
S9 SiP dual-core |
Custom Fitbit processor |
| RAM |
1GB (approximate) |
Not officially disclosed |
| Storage |
64GB internal storage |
No onboard storage for media |
| Battery Life |
Up to 18 hours |
Up to 6+ days |
| Fast Charging |
Yes |
Yes |
| GPS |
Built-in |
Built-in |
| Water Resistance |
WR50 (50 meters) |
Water-resistant up to 50m |
| Wi-Fi |
Yes (802.11b/g/n, 2.4GHz/5GHz) |
Yes |
| LTE Option |
Available in other models |
Not available |
| Bluetooth |
Bluetooth 5.3 |
Bluetooth support |
| Voice Assistant |
On-device Siri |
Google Assistant (limited), Alexa |
| Sensors |
ECG, SpO2, HR, skin temperature, accelerometer |
ECG, SpO2, HR, EDA, skin temperature, accelerometer |
| Case Material |
Aluminum (Titanium in other models) |
Aluminum |
| Action Button |
No (available on Ultra models only) |
No |
| Double Tap Gesture |
Yes |
No |
| Ultra-Wideband (UWB) |
Yes (U1 chip) |
No |
| Mic + Speaker |
Dual mic with speaker |
Microphone only (no speaker playback) |
| OS |
watchOS 10 |
Fitbit OS |
| App Store |
Full App Store access |
Limited third-party apps |
Who Should Buy What?
Buy the Apple Watch Series 9 if you:
- Want a full-featured smartwatch with a sharp, bright display and powerful processor.
- Need advanced features like Siri on-device, gesture control, and ultra-wideband.
- Use your watch for apps, music, calls, and seamless iPhone integration.
- Prefer a high-end design with premium screen resolution and speaker functionality.
- Want LTE capability for phone-free use during runs or errands.
Check Apple Watch Series 9 Best Price
Buy the Fitbit Sense 2 if you:
- Prefer a longer battery life that lasts nearly a week between charges.
- Focus on stress and sleep management with dedicated tools like EDA and Sleep Profiles.
- Want a lightweight, wellness-focused smartwatch that is easy to use.
- Have a tighter budget and don’t need full app store access or LTE.
- Don’t require an always-on display or internal media storage.
Check Fitbit Sense 2 Best Price |
Winner by Category
| Category |
Winner |
| Processor |
Apple Watch Series 9 |
| Display |
Apple Watch Series 9 |
| Display Size |
Apple Watch Series 9 |
| Resolution |
Apple Watch Series 9 |
| Brightness |
Apple Watch Series 9 |
| Speaker |
Apple Watch Series 9 |
| Storage |
Apple Watch Series 9 |
| Battery Life |
Fitbit Sense 2 |
| Fast Charging |
Tie |
| Wi-Fi |
Apple Watch Series 9 |
| On-Device Siri |
Apple Watch Series 9 |
| Double Tap Gesture |
Apple Watch Series 9 |
FAQ
Does the Apple Watch Series 9 work with Android phones?
No, the Apple Watch Series 9 only works with iPhones. It requires iOS 17 or later and does not support pairing with Android devices.
Can you use the Fitbit Sense 2 without a smartphone?
Fitbit Sense 2 can function as a standalone fitness tracker, but many features such as notifications, GPS syncing, and app updates require connection to a smartphone.
Is the Apple Watch Series 9 suitable for sleep tracking?
Yes, the Apple Watch Series 9 includes sleep tracking features that monitor sleep stages and provide insights, though its shorter battery life may require charging before bed.
How long does the Fitbit Sense 2 battery last?
The Fitbit Sense 2 battery lasts up to 6 days with normal use, though using features like always-on display or GPS may reduce this time.
Does either watch support blood oxygen level tracking (SpO2)?
Yes, both the Apple Watch Series 9 and Fitbit Sense 2 include SpO2 sensors to track blood oxygen levels, especially during sleep and workouts.
Can you make phone calls directly from these watches?
You can make phone calls from the Apple Watch Series 9 when connected to an iPhone via Bluetooth or when using the LTE model. Fitbit Sense 2 does not support speakerphone calls but allows call notifications and voice assistant replies.
Which watch is better for managing stress and mindfulness?
Fitbit Sense 2 is more focused on stress management with an EDA sensor and daily stress scores. The Apple Watch Series 9 offers basic mindfulness sessions through the Mindfulness app.
Are both watches water-resistant enough for swimming?
Yes, both watches are rated for water resistance up to 50 meters and are safe for swimming in pools or shallow water.
Can you install third-party apps on these watches?
The Apple Watch Series 9 supports a wide range of third-party apps through the App Store. Fitbit Sense 2 supports a limited selection of third-party apps and has a smaller app ecosystem.
Do these watches track heart rate continuously?
Yes, both the Apple Watch Series 9 and Fitbit Sense 2 continuously monitor your heart rate throughout the day and during workouts.