# Function Health vs Crescent by Vessel Partners

The clearest difference is update cadence: Function Health at weekly against Crescent by Vessel Partners's fortnightly. On price, ads, in-app purchases and device support there is nothing between them.

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

Function Health ships an update weekly, Crescent by Vessel Partners fortnightly. The most recent releases landed on November 12, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Function Health | Crescent by Vessel Partners |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (25K ratings)](https://appshunter.io/ios/app/function-health/id6471280307/reviews)** | — |
| Number of ratings | **25K** | — |
| Positive reviews | 61.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Fortnightly |
| Monetization | Free | — |
| Size | 206 MB | 75 MB |
| Requires iOS | 16.4 | 16.4 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 17+ | 4+ |
| Developer | [Function Health](https://appshunter.io/developer/1715014524) | [Vessel Partners](https://appshunter.io/developer/1806140902) |

## What reviewers say

### Function Health

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

Gain deep insights into your health with over 160 lab tests annually, personalized protocols, and AI-powered chat. Understand your body's evolution, track progress, and make informed changes with advanced science and your data.

**Highlights:** 160+ annual lab tests, Personalized health protocols, AI-powered private chat, Home or office blood draws, Advanced MRI & CT scans, Connect wearables, 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


### Crescent by Vessel Partners

[App page](https://appshunter.io/ios/app/crescent-by-vessel-partners/id6747093282)

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

**In-app purchases:** none


## Frequently asked questions

### Is Function Health free?

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

### Is Crescent by Vessel Partners free?

Crescent by Vessel Partners is free to download, with no in-app purchases.

### Do Function Health or Crescent by Vessel Partners have ads?

Neither Function Health nor Crescent by Vessel Partners shows ads.

### Which is updated more often, Function Health or Crescent by Vessel Partners?

Function Health ships an update weekly, and Crescent by Vessel Partners fortnightly. Most recently, Function Health was updated on November 12, 2026 and Crescent by Vessel Partners on November 8, 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.*