Oura Ring 4 vs 5 sleep tracker: Is the upgrade worth it?

Oura Ring 4 and 5 sleep tracker comparison reveals key differences and value considerations. The Oura Ring 5, launched in May 2026, boasts improved sensor technology, design, and battery life over its predecessor, the Oura Ring 4, which was launched in October 2024.

The Oura Ring 5 has fewer sensors but they are of higher quality, leading to 12% more accurate overnight HRV (heart rate variability) readings. HRV is a strong indicator of how deeply the body recovers from stress, providing a consistent measure of the body's resilience. The upgraded physical design of the Oura Ring 5 also enhances sleep tracking by having small bumps on the interior surface, which improves sensor contact with the skin for better accuracy.

Battery life is another factor to consider, with the Oura Ring 5 lasting 6 to 9 days on a single charge, compared to the Oura Ring 4's 5 to 8 days. However, this difference does not directly affect the performance of the sleep tracking features.

Both smart rings require a monthly subscription fee of $5.99 (or £5.99), which remains consistent regardless of the model chosen. The Oura Ring 4 can often be found at discounted prices on Amazon, with the lowest price currently at $254.48 for a size 15 Stealth finish. On the other hand, the Oura Ring 5 starts at $399 (or £389) for basic finishes like Black or Silver, with more luxurious options like Gold or Rose Gold priced at $499.

When deciding whether to upgrade from an Oura Ring 4 to an Oura Ring 5, the main factors to weigh are the improved sleep tracking accuracy, design, and battery life. If you are willing to invest in a higher-quality sleep tracker and can take advantage of potential sales or discounts, the Oura Ring 5 may be worth the additional expense.