| WHOOP 5.0 | Polar Grit X | |
|---|---|---|
| Pricing | ||
| Starting price | Free (hw) | $749 |
| Subscription | ⚠️ Required — $199/yr | ✓ None |
| Year 1 total cost | $199★ | $749 |
| Year 3 total cost | $597★ | $749 |
| Hardware | ||
| Weight | 27g★ | 57g |
| Water resistance | 10ATM | 100m★ |
| Battery | 14 days | 40 days★ |
| Always-on display | ❌ | ❌ |
| GPS | ❌ | ✅★ |
| Cellular | ❌ | ❌ |
| Platform | iOS & Android | iOS & Android |
| Tier | Fitness Tracker | Sports GPS |
| Buy timing | ||
| Released | May 8, 2025 | Apr 11, 2024 |
| Cycle advice | good★ | bad |
| Deals advice | neutral | good★ |
| Next model | — | — |
WHOOP 5.0 gives you a biological age score derived from your sleep, recovery, and training habits — showing whether your lifestyle is ageing you faster or slower than your years. Updated daily, it makes long-term health trends visible at a glance.
WHOOP's AI Coach learns your body's patterns and delivers personalised daily recommendations in plain language — not just what happened, but why, and what to do next. It adapts to your training load, sleep debt, and recovery trends.
WHOOP 5.0 added a dedicated strength trainer that auto-detects sets, measures neuromuscular load alongside cardiovascular strain, and shows recovery demand from resistance training — a gap every previous WHOOP version had.
Five times the battery of the Vantage V3 — enough for week-long mountain stages or ultramarathons without charging access.
Automatically segments your run by uphill and downhill sections, calculating pace and power for each — essential for mountain race training.
Running power without a chest strap or foot pod — Polar's key differentiator versus Garmin at this price tier.
The right pick depends on what you optimize for.
$597 vs $749 over 3 years.
40 days vs 14 days battery.
9 sensors · 26 Hz HR sampling.
27g.
Athletes, coaches, and fitness-obsessed users who want deep recovery and sleep data without screen distractions. WHOOP suits those who train hard and want to understand whether their body is ready to push. Not for casual users or those who want smartwatch features like notifications or GPS.
Full details →Trail runners, hikers, and outdoor athletes who want Polar's analytics with significantly longer battery life than the Vantage V3. The titanium case and sapphire glass make it suitable for technical terrain where watch durability matters.
Full details →