43+ iOS apps & games curated and reviewed
With an average user rating of 3.7★, the wellue o2 ring category is one of the App Store's strongest. Browse all 43+ apps and games we track, sorted so the most loved ones surface first.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 3.1★ (1.1K) | No | Yes | Jul 2026 |
| 2 |  | Free | 3.8★ (5) | No | No | May 2026 |
| 3 |  | Free | 4.5★ (8) | No | No | May 2026 |
| 4 |  | Free | 1.0★ (8) | No | No | Jul 2026 |
| 5 |  | Free | — | No | No | May 2026 |
| 6 |  | Free | 5.0★ (1) | No | No | May 2026 |
| 7 |  | Free was $0.99 | 4.8★ (460) | Yes | Yes | Jul 2026 |
| 8 |  | Free | 5.0★ (1) | No | No | Jul 2026 |
This app syncs with Viatom devices to display historical health data. It offers real-time monitoring, report sharing, and multi-user management for easy health tracking and goal achievement.
This app helps users calculate O-Ring dimensions and find compatible materials for their applications. It provides recommendations based on ISO standards and supports both metric and inch measurements.
Calculates remaining oxygen in a cylinder for ambulatory users. Input device, liter flow, and cylinder size for precise remaining hours and minutes. Provides peace of mind for oxygen users on the go.
Easily determine your accurate ring size for any finger with this intuitive application. It provides precise measurements down to 1/8 sizes and offers convenient conversion to international sizing standards.
This app connects to sophisticated rings that display a loved one's real-time heartbeat. It's designed for couples, those seeking alternatives to traditional wedding bands, or individuals in high-risk professions to foster connection and reduce worry.
Easily measure jewelry ring sizes using your phone's screen. Simply place your ring on the screen and adjust the slider to match its inner edge. The app provides accurate sizing in multiple international measurement systems.
Easily determine your jewelry ring size with this accurate tool. It offers multiple measurement units, visual guides, and supports numerous international sizing systems. Share your findings effortlessly.
Easily measure rings and jewelry with precision using your phone. Features include real-time finger sizing, global size support, and measurement history. Perfect for enthusiasts and professionals alike.
A straightforward puzzle game where players manipulate rings to free them by touching their ends or pillars. The objective is to clear the rings by strategically interacting with them. Enjoy a simple yet engaging challenge.
This app provides a comprehensive offline tool for selecting standard rubber seal sizes, including O-Rings, X-Rings, and Back-Up Rings. It offers dimension searches, housing calculations for various sealing applications, and supports multiple international standards in both metric and imperial units.
Accurately measure ring sizes using your phone's screen. Determine diameter, circumference, and convert between international sizing systems. Ideal for jewelers and shoppers needing precise measurements.
This app enhances budget smart rings with advanced health tracking features, offering sleep analysis, heart rate monitoring, and activity tracking. It provides Oura-quality insights without the premium price tag, supporting a variety of compatible rings and integrating with health platforms.
Transform two devices into a powerful anti-thief system for your home. Monitor your space remotely with live video and high-quality audio, ensuring security and peace of mind from anywhere.
Virtually try on engagement rings and wedding bands using AI. Upload a photo of your hand to see how various styles sparkle, from gold to rose, solitaire to halo. Save and share your favorite looks effortlessly.