For years, fitness trackers and smartwatches have dominated the wearable tech space. However, smart rings are gaining momentum as a more discreet, lightweight, and practical alternative for tracking health and wellness. I’ve been testing the Luna Ring, and it has the potential to redefine how we monitor our health without the bulk of a smartwatch.

The Luna Ring is designed to provide advanced sleep tracking, heart rate monitoring, stress analysis, and AI-powered coaching, all while maintaining a sleek and comfortable design. It competes directly with other leading smart rings but stands out due to its high accuracy, AI-driven insights, and lack of a subscription model. Over the next few weeks, I will be diving deep into its features, usability, and whether it can truly replace other fitness wearables.

What Makes the Luna Ring Stand Out?

The Luna Ring is built to provide a comprehensive health and performance tracking experience without the need for a screen or a bulky device. Some of the features that immediately caught my attention include:

1. Highly Accurate Sleep Tracking

One of Luna Ring’s standout features is its precision sleep tracking, powered by Philips Biosensing algorithms with a reported 98.2 percent accuracy rate. It provides a detailed breakdown of REM, deep sleep, light sleep, and awake time, giving insight into overall sleep quality. Additionally, the ring tracks nighttime movement, respiratory rate, blood oxygen levels (SpO2), and heart rate variability (HRV) to offer a complete picture of sleep health.

Unlike smartwatches that can feel cumbersome while sleeping, the Luna Ring is lightweight, made from durable titanium, and designed for all-night comfort.

2. AI-Powered Coaching for Health and Fitness

The Luna Ring includes an AI health coach designed to offer personalized insights and recommendations based on individual health data. Whether it's suggesting optimized sleep schedules, workout intensity adjustments, or nutrition recommendations, the AI adapts to your habits and provides actionable feedback.

Luna’s AI is built from a dataset of over 20 million users, making it one of the most advanced machine-learning health assistants in the smart ring space. Unlike traditional fitness trackers that give raw data, Luna interprets it and provides contextual insights to improve daily well-being.

3. Continuous Health Monitoring

Beyond sleep, the Luna Ring measures a wide range of real-time health metrics, including:

24/7 heart rate tracking for resting and active states
Stress monitoring, analyzing HRV and body temperature fluctuations
Menstrual cycle tracking for women, including fertility prediction and symptom logging
Calorie burn estimation based on movement and heart rate data
Real-time temperature tracking, recording skin temperature every five minutes during sleep

Luna’s activity tracking automatically detects when you’re moving and categorizes high, medium, and low-intensity activity, ensuring a more accurate reflection of daily exertion levels.

4. No Subscription Fees – One-Time Purchase

Many smart wearables lock premium features behind a subscription model, requiring users to pay monthly fees to access detailed health insights. The Luna Ring is one of the few products that provides full access to all features with a one-time purchase.

This is a major advantage over competitors like Oura, Ultrahuman, and Whoop, which require ongoing fees for detailed insights and historical data.

5. Built for Durability and Comfort

Designed with a fighter jet-grade titanium shell, the Luna Ring is lightweight yet durable. It is also water-resistant up to 50 meters, making it suitable for activities like swimming, showering, and even some water sports.

The interior features a hypoallergenic, non-metallic lining, ensuring comfort for long-term wear, even for those with skin sensitivities.

6. Long-Lasting Battery Life

Battery life is always a concern with wearables, and the Luna Ring performs well in this area. It features a battery capacity of 13.5 to 21.5 mAh, which translates to an expected battery life of up to seven days on a single charge. A full recharge takes approximately 90 to 120 minutes, allowing for quick top-ups when needed.

How Does It Compare to Other Smart Rings?

The smart ring market is growing, with brands like Oura, Ultrahuman, and Circular competing for dominance. Luna Ring holds its own in several key areas:

Price: Luna Ring costs $300, compared to Oura ($299 - $549) and Ultrahuman ($349).
Subscription Fees: Luna Ring requires no subscription, while Oura charges $5.99 per month for premium insights. Ultrahuman also has no subscription fees.
Battery Life: Luna Ring lasts 6-7 days on a single charge, which is similar to Oura (4-7 days) and Ultrahuman (5-6 days).
Sleep Tracking Accuracy: Luna Ring’s 98.2 percent accuracy is among the best in the industry, competing with Oura and Ultrahuman.
Heart Rate Monitoring: All three rings provide continuous heart rate tracking for resting and active states.
Skin Temperature Tracking: Luna Ring, Oura, and Ultrahuman all include real-time skin temperature tracking.
AI-Powered Coaching: Luna Ring is the only one offering AI-driven workout and nutrition coaching. Oura and Ultrahuman lack this feature.
Menstrual Health Tracking: Luna Ring and Oura support menstrual health tracking, while Ultrahuman does not.
Water Resistance: Luna Ring is water-resistant up to 50 meters, compared to 100 meters for Oura and Ultrahuman.
Weight: Luna Ring weighs 3-4 grams, making it slightly lighter than Oura (4-6 grams) and comparable to Ultrahuman (2.4-3.4 grams).

Upcoming Video Review

I will be testing the Luna Ring over the next few weeks to determine:

Does it live up to its claims of accuracy and AI-powered coaching?
How does it compare in real-world usage to Oura and other leading smart rings?
Is it comfortable enough for 24/7 wear?
Does the battery actually last a full week?

My in-depth video review will cover all these aspects and more. If you’re considering the Luna Ring, you can get an exclusive 10 percent discount using my affiliate link below:

https://shop.lunazone.com/ryanmercer

Or my Luna Ring discount code: RYANMERCER10

Stay tuned for the full video review, and let me know in the comments—would you switch to a smart ring over a smartwatch?