# Function Health vs KaiCare

The clearest difference is iOS requirement: Function Health at 16.4 against KaiCare's 26.2. 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.

Function Health ships an update weekly, KaiCare every 8 days. The most recent releases landed on October 26, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Function Health | KaiCare |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (25K ratings)](https://appshunter.io/ios/app/function-health/id6471280307/reviews)** | — |
| Number of ratings | **25K** | — |
| Positive reviews | 61.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 8 days |
| Monetization | Subscription | — |
| Size | 203 MB | 22 MB |
| Requires iOS | **16.4** | 26.2 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 17+ | 17+ |
| Developer | [Function Health](https://appshunter.io/developer/1715014524) | [MyHealth CCM LLC](https://appshunter.io/developer/1837845328) |

## What reviewers say

### Function Health

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

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


### KaiCare

[App page](https://appshunter.io/ios/app/kaicare/id6757854423)

**Features:** macOS Compatibility, 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 KaiCare free?

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

### Do Function Health or KaiCare have ads?

Neither Function Health nor KaiCare shows ads.

### Which is updated more often, Function Health or KaiCare?

Function Health ships an update weekly, and KaiCare every 8 days. Most recently, Function Health was updated on October 26, 2026 and KaiCare on October 23, 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.*