At a Glance: The Verdict
| Samsung Galaxy Ring | Ultrahuman Ring AIR |
|---|---|
|
Best For: Android and Samsung Galaxy phone owners The longer-lasting ring with a 7-day battery and blood oxygen (SpO2) tracking. It only works on Android, and it shines if you already live inside Samsung Health. |
Best For: iPhone users and anyone who wants platform freedom Cheaper at $349, works on both iOS and Android, and has no subscription. You give up SpO2 and two days of battery, but you keep your phone choice. |
Quick Buy Path
Check today’s pricing before you go deeper.
If these are already your two finalists, compare current pricing now, then keep reading for the full verdict.
Both of these are titanium smart rings that weigh next to nothing and track your sleep, heart rate, and recovery without a screen on your finger. But the gap between them isn’t about flashy features. It comes down to which phone you own, whether you want blood oxygen tracking, and how much you care about an extra two days of battery.
Key Differences
- Phone compatibility: The Samsung Galaxy Ring is Android-only and leans on Samsung Health. The Ultrahuman Ring AIR works on both iPhone and Android.
- Blood oxygen: The Galaxy Ring tracks SpO2. The Ring AIR does not have a SpO2 sensor at all.
- Battery life: Galaxy Ring lasts about 7 days per charge. The Ring AIR lasts about 5 days.
- Price: The Ring AIR is $349. The Galaxy Ring is $399.99. Neither charges a monthly subscription, which is the whole point of skipping an Oura.
- Bluetooth: Galaxy Ring uses the newer Bluetooth 5.4; the Ring AIR uses Bluetooth 5.0.
Deep Dive Comparison
Design & Comfort
Both rings weigh just 3 grams, so neither one is going to bother you in your sleep or at the gym. The Galaxy Ring uses Grade 5 titanium and is rated 10 ATM plus IP68, which means it laughs off swims and showers. The Ring AIR uses titanium with a tungsten carbide coating and a 100M water rating, with a slim 2.45mm band that’s one of the lowest-profile rings out there. Comfort is basically a tie. The real difference is that Samsung pushes you to a sizing kit and a Galaxy phone before you can even start.
Battery Life
This is a clear win for Samsung. The Galaxy Ring runs about 168 hours (7 days) on a charge, while the Ring AIR runs about 120 hours (5 days). Neither has GPS to drain it, so these are real, everyday numbers. Two extra days isn’t life-changing, but it’s the difference between charging once a week versus remembering to do it more often.
Health & Fitness Features
Here’s where the spec sheets split. The Galaxy Ring packs heart rate, SpO2 (blood oxygen), skin temperature, and an accelerometer. The Ring AIR has heart rate (PPG), skin temperature, and a 6-axis IMU for movement, but no SpO2. If you want overnight blood oxygen trends, the Galaxy Ring is the only one here that can do it. Both handle sleep, recovery, and activity tracking well, and Ultrahuman is known for a clean, no-nonsense recovery and sleep-index approach.
Smart Features
Don’t expect much, and that’s fine. Neither ring has a display, NFC payments, a microphone, or a speaker. These are tracking devices, not mini smartwatches. The only smart-feature edge is Bluetooth 5.4 on the Galaxy Ring versus 5.0 on the Ring AIR, which is a minor connection-stability bump, not something you’ll feel day to day.
Price & Value
The Ultrahuman Ring AIR lists at $349 and the Samsung Galaxy Ring at $399.99. Both skip the subscription trap entirely, so the sticker price is the real price. For $50 less, the Ring AIR gives you cross-platform support; for $50 more, the Galaxy Ring gives you SpO2 and longer battery. If you own a Samsung phone, the extra spend is easy to justify. If you own an iPhone, the Galaxy Ring isn’t even an option.
Technical Specs
| Spec | Samsung Galaxy Ring | Ultrahuman Ring AIR |
|---|---|---|
| Weight | 3.0 g | 3.0 g |
| Material | Titanium Grade 5 | Titanium w/ tungsten carbide coating |
| Water Rating | 10 ATM + IP68 | 100M |
| Battery | 168 hours (7 days) | 120 hours (5 days) |
| Sensors | HR, SpO2, Skin Temp, Accelerometer | HR (PPG), Skin Temp, 6-axis IMU |
| Connectivity | Bluetooth 5.4 | Bluetooth 5.0 (BLE) |
| Phone Support | Android only | iOS + Android |
| Price | $399.99 | $349 |
The Verdict
Your phone decides this one more than anything else. Buy the Samsung Galaxy Ring if you own an Android phone, ideally a Samsung Galaxy, and you want the longest battery plus SpO2 blood oxygen tracking. It’s the more complete sensor package, and the 7-day battery is the best here. Buy the Ultrahuman Ring AIR if you use an iPhone, or if you simply want the freedom to switch phones later without ditching your ring. At $349 with no subscription, it’s the cheaper, more flexible pick, and you only really lose SpO2 and a couple days of battery. For iPhone owners, the Ring AIR isn’t just the better choice, it’s the only choice between these two.
Frequently Asked Questions
Which smart ring is better overall?
It depends entirely on your phone. The Samsung Galaxy Ring wins on battery (7 days) and adds SpO2, but it only works on Android. The Ultrahuman Ring AIR is cheaper and works on both iPhone and Android, making it the better all-around pick for most people who aren’t locked into Samsung.
Does the Ultrahuman Ring AIR track blood oxygen like the Galaxy Ring?
No. The Ring AIR does not have an SpO2 sensor, so it can’t track blood oxygen. If overnight blood oxygen trends matter to you, the Samsung Galaxy Ring is the only one of these two that measures it.
Is the Galaxy Ring worth the extra $50?
If you own an Android phone, yes. The extra $50 buys you SpO2 tracking and two more days of battery life, and neither ring charges a subscription. If you own an iPhone, the question is moot since the Galaxy Ring won’t work with it at all.
Will the Samsung Galaxy Ring work with my iPhone?
No. The Galaxy Ring requires an Android phone and Samsung Health, with full features tied to a Samsung Galaxy device. iPhone users should go with the Ultrahuman Ring AIR, which supports iOS and Android equally.
Do either of these rings have a monthly subscription?
No, and that’s a big part of the appeal. Both the Galaxy Ring and the Ring AIR give you full app access for the one-time purchase price, unlike the Oura Ring, which gates much of its data behind a paid membership.
🏆 Ready to Decide?
Check the latest deals to see which one fits your budget.
Need a broader starting point first? Read Best Fitness Tracker (2026) for the fastest shortlist.
*We earn a commission if you make a purchase.
Specs and features may change. Always verify details on the manufacturer’s official site before purchasing.
