C&O Pro, powered by viO’s OvuSense™ technology, builds on the capabilities of the original C&O PowerPlug by adding clinically validated temperature-based ovulation confirmation and detailed cycle health insights. While both versions offer period and ovulation day prediction, C&O Pro goes further with:
These upgrades make C&O Pro especially valuable for users tracking fertility in irregular cycles, or monitoring patterns linked to cycle-related health conditions, while maintaining the accuracy and privacy standards of Ultrahuman’s ecosystem.
| Features/Capabilities | C&O | C&O Pro |
|---|---|---|
| Period prediction | ✅ | ✅ |
| Ovulation day prediction | ✅ | ✅ |
| Support for irregular and complicated cycles | ❌ | ✅ |
| Ovulation confirmation | ❌ | ✅ |
| Ovulation confirmation with 90%+ accuracy | ❌ | ✅ |
| Anovulatory cycle detection | ❌ | ✅ |
| Cycle flags | ❌ | ✅ |
| CE Class 2 medical device status | ❌ | ✅ |
| FDA-cleared under product code LHD and is regulated with controls consistent with Class II medical devices | ✅ | ✅ |
| HSA/FSA eligible | Not applicable | ✅ |
The OvuSense™ algorithm is built on years of research and trained on data from over 260,000 menstrual cycles recorded using a Class II medical-grade vaginal temperature sensor. Leveraging this robust dataset, the algorithm can precisely detect temperature-based variations across cycles and flag meaningful deviations, helping track key cycle phases, provide support for when you’re trying to conceive and provide valuable insights into health conditions such as PCOS, as well as a range of other cycle-related conditions.
A medical-grade algorithm is one that’s developed and tested to clinical standards, using data from approved medical devices, in controlled medical studies-so it’s accurate, reliable, and trusted for health-related insights. Furthermore OvuSense performance has been showcased in numerous clinical studies and clinically proven for use with skin-worn temperature data (Hurst et al, 2022).
Accuracy means how close C&O Pro’s predictions or flags are to the actual events in your cycle, based on clinically validated algorithms and your real biomarker data. Higher accuracy means the insights closely match what’s happening in your body.
1C&O Pro has an accuracy of ovulation detection of over 90% compared to ovulation prediction kit based on four hormones $^1$, unlike the conventionally used single-hormone (luteinising hormone) test.
1 Internal equivalence testing in OvuSense Technical File
Ovulation confirmation means verifying after it has happened that ovulation occurred in your cycle, usually by detecting a sustained rise in temperature or other biomarkers.