# OOVA vs Evie Ring

The clearest difference is rating: OOVA at 4.4 against Evie Ring's 1.5. OOVA also leads on review sentiment (47% vs 7%) and ratings volume (50 vs 16). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

OOVA holds the better App Store score, 4.4 against 1.5. Both are backed by a comparable volume of ratings — 50 and 16 respectively. Written reviews point the same way: 47% of OOVA's written reviews are positive against 7% of Evie Ring's.

OOVA ships an update every 2 weeks, Evie Ring every 3 weeks. The most recent releases landed on October 1, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | OOVA | Evie Ring |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (50 ratings)](https://appshunter.io/ios/app/oova/id1487480281/reviews)** | [1.5 (16 ratings)](https://appshunter.io/ios/app/evie-ring/id1636846759/reviews) |
| Number of ratings | **50** | 16 |
| Positive reviews | **47.1% of reviews** | 6.6% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | Free | Free |
| Size | 31 MB | 154 MB |
| Requires iOS | 17.6 | **16.0** |
| Devices | iPhone | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [OOVA inc.](https://appshunter.io/developer/1424539047) | [Movano Inc](https://appshunter.io/developer/1491286943) |

## What reviewers say

### OOVA

[App page](https://appshunter.io/ios/app/oova/id1487480281)

This app translates hormone levels using at-home urine tests to track, predict, and confirm ovulation. It offers personalized insights into your unique cycle, allowing you to customize data logging and share results with healthcare providers.

**Highlights:** Quantitative hormone measurement (LH, E3G, PdG), Personalized cycle tracking and fertile window prediction, Customizable data logging (mood, symptoms, etc.), HIPAA-compliant data sharing with healthcare providers, At-home urine test analysis via smartphone camera, Medically trusted design in partnership with Mount Sinai

**In-app purchases:** none


### Evie Ring

[App page](https://appshunter.io/ios/app/evie-ring/id1636846759)

This app offers a comprehensive approach to women's wellness, empowering users to track their menstrual cycle, analyze sleep quality, and monitor daily activity. It provides personalized insights to help users understand their bodies and take control of their health journey.

**Highlights:** Menstrual cycle tracking, Sleep quality analysis, Activity tracking, Workout logging, SpO2 monitoring, Heart rate monitoring

**In-app purchases:** none

**What reviewers like**

- 💍 Attractive, comfortable ring design with open band
- 💰 No subscription fee required
- 📱 Simple, intuitive app interface
- 👩‍⚕️ Women-focused health tracking approach
- ⚡ Fast charging capability

**What reviewers complain about**

- 🔋 Poor battery life, drains quickly
- 🐛 Frequent app crashes and data loss
- 😴 Inaccurate sleep tracking
- 🚶 Inflated step counts
- 📊 Lack of meaningful insights and analytics

**Reported bugs**

- Ring won't sync with app
- Battery dies within 3-6 months of use
- App crashes frequently
- Sleep data not recorded on some nights
- Spot check feature fails consistently

**Requested features**

- Apple Health integration
- Manual sleep and activity logging/editing
- Automatic workout detection
- Advanced cycle tracking with temperature insights
- Pregnancy tracking mode


## Frequently asked questions

### Is OOVA free?

OOVA is free to download, with no in-app purchases.

### Is Evie Ring free?

Evie Ring is free to download, with no in-app purchases.

### Which has better reviews, OOVA or Evie Ring?

OOVA is rated higher. OOVA averages 4.4 out of 5 from 50 ratings, while Evie Ring averages 1.5 from 16 ratings.

### Do OOVA or Evie Ring have ads?

Neither OOVA nor Evie Ring shows ads.

### Which is updated more often, OOVA or Evie Ring?

OOVA ships an update every 2 weeks, and Evie Ring every 3 weeks. Most recently, OOVA was updated on October 1, 2026 and Evie Ring on September 29, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*