# InsideTracker vs Function Health

The clearest difference is rating: Function Health at 4.9 against InsideTracker's 3.4. Function Health also leads on in-app purchases (none vs 2) and review sentiment (62% vs 33%). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. InsideTracker sells 2 in-app purchases, starting at $149.00 per year. Function Health asks for nothing beyond the download.

Function Health holds the better App Store score, 4.9 against 3.4. That said, the two scores are not equally well evidenced: Function Health has 25K ratings behind it against 341, so its average is the more settled of the two. Written reviews point the same way: 33% of InsideTracker's written reviews are positive against 62% of Function Health's.

InsideTracker ships an update fortnightly, Function Health weekly. The most recent releases landed on September 23, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | InsideTracker | Function Health |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.4 (341 ratings)](https://appshunter.io/ios/app/insidetracker/id1501674631/reviews) | **[4.9 (25K ratings)](https://appshunter.io/ios/app/function-health/id6471280307/reviews)** |
| Number of ratings | 341 | **25K** |
| Positive reviews | 33.3% of reviews | **61.9% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 112 MB | 201 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | iPhone | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [Segterra Inc](https://appshunter.io/developer/1487046588) | [Function Health](https://appshunter.io/developer/1715014524) |

## What reviewers say

### InsideTracker

[App page](https://appshunter.io/ios/app/insidetracker/id1501674631)

This app analyzes your blood, DNA, and fitness tracker data to provide personalized, science-backed recommendations for improving your health and well-being. It offers a guided program with actionable insights on nutrition, supplements, and exercise to help you feel stronger and live longer.

**Highlights:** Blood, DNA, and fitness tracker data analysis, Personalized Action Plan, Nutrition and supplement recommendations, Exercise and habit guidance, InnerAge analysis, AI-powered health guide

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| InsideTracker membership | $149.00 | per year |
| InnerAge 2.0 | $89.99 | one-time |

**What reviewers like**

- ⭐ Simple unprompted insights
- ⭐ Great app for health tracking
- ⭐ The health data I didn't know was available to me
- ⭐ The best biomarker analysis service
- ⭐ Love this App

**What reviewers complain about**

- 🐛 Not bad but doesn't import nutrition from Apple Health (or anywhere at all)
- 🐛 App Doesn't Work
- 🐛 Scam
- 🐛 Could be a lot better
- 🐛 Works fairly well, except nutrition deep dive

**Reported bugs**

- Syncing with Apple Health not working properly
- Inability to check in or check off daily recommendations
- Constant need to re-login
- Notifications not working as expected
- Garmin integration not working

**Requested features**

- Ability to import nutrition data from Apple Health
- Ability to manually enter sleep data


### 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


## Frequently asked questions

### Is InsideTracker free?

InsideTracker 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, InsideTracker or Function Health?

Function Health is rated higher. InsideTracker averages 3.4 out of 5 from 341 ratings, while Function Health averages 4.9 from 25K ratings.

### Do InsideTracker or Function Health have ads?

Neither InsideTracker nor Function Health shows ads.

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

InsideTracker ships an update fortnightly, and Function Health weekly. Most recently, InsideTracker was updated on September 23, 2026 and Function Health on September 29, 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.*