# The U vs Function Health

The U and Function Health both sit at 5.0 stars, but that hides the real split: 100% of The U's written reviews are positive against 62% of Function Health's. The U also leads on device support (3 vs 1). Function Health's advantage is in-app purchases (none vs 3) and update cadence (weekly vs every 2 months). On price, rating, ads and iOS requirement there is nothing between them.

Both are free to download. The U sells 3 in-app purchases, starting at $39.99 per month. Function Health asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for The U against 4.9 for Function Health. That said, the two scores are not equally well evidenced: Function Health has 25K ratings behind it against 12, so its average is the more settled of the two. Written reviews are what separate them: 100% of The U's written reviews are positive against 62% of Function Health's.

The U ships an update every 2 months, Function Health weekly. The most recent releases landed on October 11, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | The U | Function Health |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (12 ratings)](https://appshunter.io/ios/app/the-u/id1527171221/reviews)** | [4.9 (25K ratings)](https://appshunter.io/ios/app/function-health/id6471280307/reviews) |
| Number of ratings | 12 | **25K** |
| Positive reviews | **100.0% of reviews** | 61.8% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | **Free with in-app purchases** | Subscription |
| Best chart rank | — | **#193** |
| Size | 52 MB | 203 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 17+ |
| Developer | [The Digital U, LLC](https://appshunter.io/developer/1674041535) | [Function Health](https://appshunter.io/developer/1715014524) |

## What reviewers say

### The U

[App page](https://appshunter.io/ios/app/the-u/id1527171221)

Receive personalized workout plans from specialists based on your health history and goals. Engage in interactive live-streamed classes with real-time feedback from trainers, or access a library of on-demand content. Programs are also available for specific medical conditions.

**Highlights:** Customized workout prescriptions, Live interactive at-home classes, On-demand workout library, Doctor-endorsed programs for medical conditions, Nutrition and meditation guidance, Real-time trainer feedback

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 30 Days On-Demand | $39.99 | per month |
| 30 Days On-Demand (Premium) | $74.99 | per month |
| Live Classes | $150.00 | per month |


### Function Health

[App page](https://appshunter.io/ios/app/function-health/id6471280307)

**Currently charting:** #193 Top Free · Health & Fitness (US App Store)

Take control of your health with comprehensive lab testing, personalized protocols, and AI-powered insights. Understand your body's data, track changes over time, and make informed decisions for long-term wellness. Connect wearables and upload records for a complete health picture.

**Highlights:** 160+ lab tests annually, Personalized health protocols, Private AI Chat for results, Connect health wearables, Advanced MRI & CT scans, Upload health records

**Features:** Apple Wallet

**In-app purchases:** none

**What reviewers like**

- 🚀 Seamless process for blood tests and results
- 📊 Comprehensive health insights and tracking
- 🧠 Helpful clinician notes and recommendations
- 👍 User-friendly and visually appealing app
- 💰 Affordable compared to other options

**What reviewers complain about**

- 🔍 Lack of communication and support responsiveness
- 🐛 Some bugs and usability issues in the app

**Reported bugs**

- App sometimes redirects back to the home screen when trying to view results
- Occasional typos and formatting issues in the app

**Requested features**

- More customization options in the app settings
- Ability to print or export test results and recommendations
- Specific supplement recommendations rather than broad suggestions


## Frequently asked questions

### Is The U free?

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

### Is Function Health free?

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

### Which has better reviews, The U or Function Health?

The U is rated higher. The U averages 5.0 out of 5 from 12 ratings, while Function Health averages 4.9 from 25K ratings.

### Do The U or Function Health have ads?

Neither The U nor Function Health shows ads.

### Which is updated more often, The U or Function Health?

The U ships an update every 2 months, and Function Health weekly. Most recently, The U was updated on October 11, 2026 and Function Health on October 20, 2026.

---

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