# Gene Doe vs NephRef

The clearest difference is rating: NephRef at 5.0 against Gene Doe's 4.0. NephRef also leads on update cadence (every 10 days vs every 4 weeks) and iOS requirement (11.0 vs 15.6). Gene Doe's advantage is ratings volume (3 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

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

NephRef holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

Gene Doe ships an update every 4 weeks, NephRef every 10 days. The most recent releases landed on June 1, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Gene Doe | NephRef |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (3 ratings)](https://appshunter.io/ios/app/gene-doe/id1470352738/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/nephref/id1486749987/reviews)** |
| Number of ratings | **3** | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 10 days** |
| Monetization | Free | Free |
| Size | 48 MB | 44 MB |
| Requires iOS | 15.6 | **11.0** |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 12+ | 12+ |
| Developer | [Christopher Metts](https://appshunter.io/developer/1046317677) | [Media Foundations LLC](https://appshunter.io/developer/589717539) |

## What reviewers say

### Gene Doe

[App page](https://appshunter.io/ios/app/gene-doe/id1470352738)

This platform enables citizen science by connecting users with research studies. Researchers can publish protocols and collect data via HealthKit and ResearchKit, while users can enroll in studies after meeting screening requirements and providing consent.

**Highlights:** Citizen science platform, Research study participation, Data collection via HealthKit, ResearchKit ActiveTasks integration, Self-enrollment in studies

**Features:** macOS Compatibility

**In-app purchases:** none


### NephRef

[App page](https://appshunter.io/ios/app/nephref/id1486749987)

This medical reference tool aids physicians and advanced practitioners in managing patients with kidney disease. It provides quick access to educational resources and guidance on patient referral, urgency, and interval management.

**Highlights:** Kidney disease patient care guidance, Referral management, Urgency assessment, Interval management, Educational resources access

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Gene Doe free?

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

### Is NephRef free?

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

### Which has better reviews, Gene Doe or NephRef?

NephRef is rated higher. Gene Doe averages 4.0 out of 5 from 3 ratings, while NephRef averages 5.0 from 1 ratings.

### Do Gene Doe or NephRef have ads?

Neither Gene Doe nor NephRef shows ads.

### Which is updated more often, Gene Doe or NephRef?

Gene Doe ships an update every 4 weeks, and NephRef every 10 days. Most recently, Gene Doe was updated on June 1, 2026 and NephRef on September 18, 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.*