# Catchtrial ePro vs Ring

The clearest difference is in-app purchases: Catchtrial ePro at none against Ring's 4. Catchtrial ePro also leads on ads (none vs shown) and rating (5.0 vs 4.7). Ring's advantage is ratings volume (32 vs 1) and update cadence (every 3 weeks vs every 2 months). On price there is nothing between them.

Both are free to download. Ring sells 4 in-app purchases, starting at $2.99 per month. Catchtrial ePro asks for nothing beyond the download.

Catchtrial ePro holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Ring has 32 ratings behind it against 1, so its average is the more settled of the two.

Catchtrial ePro ships an update every 2 months, Ring every 3 weeks. The most recent releases landed on October 22, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Catchtrial ePro | Ring |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/catchtrial-epro/id1490097635/reviews)** | [4.7 (32 ratings)](https://appshunter.io/ios/app/ring-birth-control-tracker/id6596771398/reviews) |
| Number of ratings | 1 | **32** |
| Positive reviews | — | 87.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | **Free** | Freemium |
| Size | 61 MB | 85 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | +12 |
| Developer | [Meditrial Europe Ltd](https://appshunter.io/developer/958224235) | [Anna Ovchynnykova](https://appshunter.io/developer/1760578338) |

## What reviewers say

### Catchtrial ePro

[App page](https://appshunter.io/ios/app/catchtrial-epro/id1490097635)

This app allows clinical trial participants to conveniently report their data from home using their smartphone or tablet. It provides timely surveys and diaries through an easy-to-use interface, ensuring data accuracy and secure transmission to clinical trial databases.

**Highlights:** Home-based data reporting, Timely surveys and diaries, Step-by-step questionnaire interface, Secure data transmission, Offline data collection

**Features:** macOS Compatibility

**In-app purchases:** none


### Ring

[App page](https://appshunter.io/ios/app/ring-birth-control-tracker/id6596771398)

Manage your contraceptive ring birth control with an intuitive and user-friendly interface. Easily track insertion and removal times, customize your cycle, and receive timely notifications. Premium features include widgets, a personal diary, and PDF reports.

**Highlights:** Cycle overview, Ring insertion/removal reminders, Customizable cycle control, Daily calendar with notes, Custom notifications, Widgets, Personal diary and symptoms tracking

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $2.99 | per month |
| Monthly Pro | $3.99 | per month |
| Annual | $29.99 | per year |
| Yearly Pro | $34.99 | per year |


## Frequently asked questions

### Is Catchtrial ePro free?

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

### Is Ring free?

Ring is free to download, with in-app purchases available.

### Which has better reviews, Catchtrial ePro or Ring?

Catchtrial ePro is rated higher. Catchtrial ePro averages 5.0 out of 5 from 1 ratings, while Ring averages 4.7 from 32 ratings.

### Do Catchtrial ePro or Ring have ads?

Ring shows ads; Catchtrial ePro does not.

### Which is updated more often, Catchtrial ePro or Ring?

Catchtrial ePro ships an update every 2 months, and Ring every 3 weeks. Most recently, Catchtrial ePro was updated on October 22, 2026 and Ring on October 30, 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.*