# Which smartwatch is compatible with both Android and iOS devices? — Verified Specification Comparison

> All specification data verified from official manufacturer documentation.

Which smartwatch is compatible with both Android and iOS devices?

## Products

### Fitbit Sense 2 Smartwatch
```yaml
product: fitbit-sense-2-smartwatch
brand: Fitbit
price_gbp: 147.54
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
brand: Fitbit
model: Sense 2 Smartwatch
resolution: 336 x 336
screen_size: 1.58
battery_life: 144
connectivity: Bluetooth 5.0, Wi-Fi, NFC
operating_system: Works with most phones running on Android 11.0 or iOS 16.4 or newer
water_resistance: 5 ATM
heart_rate_monitor: Multi-path optical (24/7 continuous) heart rate sensor
```

- **Price:** £147.54 [^1]
- **Summary:** Fitbit Sense 2 is an advanced health and fitness smartwatch with an ECG app for heart rhythm assessment and all-day body-response (cEDA) stress tracking. It also includes on-wrist heart rate monitoring, SpO2 tracking, and skin temperature variation tracking, plus Google Maps and Google Wallet support. With a 1.58-inch AMOLED display and up to 6+ days of battery life, it suits people who want deeper health insights and smartwatch features without daily charging.
- **Ideal For:** It supports both iOS and Android (works with phones running iOS 16.4 or newer and Android 11.0 or newer), making it compatible with both platforms.
- **Additional Sources:** [^2]

### Polar Ignite 3
```yaml
product: polar-ignite-3
brand: Polar
price_gbp: 250.81
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
brand: Polar
model: Ignite 3
resolution: 416 x 416
screen_size: 1.28 in
battery_life: 120
connectivity: Bluetooth LE
operating_system: Polar OS
heart_rate_monitor: Polar Precision Prime optical heart rate sensor
```

- **Price:** £250.81 [^3]
- **Summary:** The Polar Ignite 3 is a lightweight fitness and wellness watch with a bright AMOLED touchscreen, built-in GPS, sleep tracking, recovery insights, and continuous heart rate monitoring. Its battery lasts up to five days in smartwatch mode or 30 hours during GPS training, making it suitable for everyday fitness, exercise, and sleep tracking.
- **Ideal For:** The Polar Ignite 3 suits users seeking Android and iOS compatibility because it connects to phones through Bluetooth LE and syncs with the Polar Flow mobile app.

---
## References & Sources
[^1]: Best Buy, accessed 2026-09-13. https://www.bestbuy.com/product/google-fitbit-sense-2-advanced-health-smartwatch-works-with-android-and-ios-graphite-2022/J3GWJ6S2GX
[^2]: Google Store, accessed 2026-09-13. https://store.google.com/us/product/fitbit_sense_2?hl=en-US
[^3]: Polar, accessed 2026-09-13. https://www.polar.com/en/ignite3