# WHOOP vs Function Health

The clearest difference is monetization model: WHOOP at free with in-app purchases against Function Health's subscription. WHOOP also leads on chart position (#60 vs unranked) and ratings volume (87K vs 25K). Function Health's advantage is review sentiment (62% vs 41%) and iOS requirement (16.4 vs 18.0). On price, rating, update cadence and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.8 for WHOOP against 4.9 for Function Health. Both are backed by a comparable volume of ratings — 87K and 25K respectively. Written reviews are what separate them: 41% of WHOOP's written reviews are positive against 62% of Function Health's.

Both ship on a similar rhythm, roughly weekly. Both last shipped on October 17, 2026.

## The numbers

| Metric | WHOOP | Function Health |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (87K ratings)](https://appshunter.io/ios/app/whoop/id933944389/reviews) | **[4.9 (25K ratings)](https://appshunter.io/ios/app/function-health/id6471280307/reviews)** |
| Number of ratings | **87K** | 25K |
| Positive reviews | 41.4% of reviews | **61.8% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | Weekly |
| Monetization | **Free with in-app purchases** | Subscription |
| Best chart rank | **#60** | — |
| Size | 518 MB | 203 MB |
| Requires iOS | 18.0 | **16.4** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 12+ | 17+ |
| Developer | [WHOOP](https://appshunter.io/developer/933944388) | [Function Health](https://appshunter.io/developer/1715014524) |

## What reviewers say

### WHOOP

[App page](https://appshunter.io/ios/app/whoop/id933944389)

**Currently charting:** #60 Top Free · Health & Fitness (US App Store)

This wearable device and companion app provide in-depth health insights, including sleep, recovery, and strain levels. It offers personalized coaching and recommendations based on your body's unique physiology to help you achieve your health and fitness goals.

**Highlights:** Personalized Sleep Insights, Daily Recovery Score, Cardiovascular & Muscular Strain Measurement, Real-time Stress Score, Behavior Tracking & Guidance, AI-powered Health Coach, Menstrual Cycle Insights

**In-app purchases:** none

**What reviewers like**

- 🚀 Great data and insights
- 🔒 Accurate sleep and recovery tracking
- 👍 Helpful for improving health and fitness
- 🚀 Innovative concept and technology
- 👍 Motivating and life-changing

**What reviewers complain about**

- 🐛 Connectivity issues and data sync problems
- 🔋 Battery life concerns
- 👎 Expensive subscription model
- 👎 Poor customer service and support
- 👎 Inaccurate data and metrics

**Reported bugs**

- Strap disconnecting frequently from app
- Inconsistent and unreliable data tracking
- App crashes and performance issues

**Requested features**

- Improved sleep and recovery suggestions
- Better integration with other fitness apps and devices
- More customization options for tracking
- Ability to manually log activities and workouts


### 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 WHOOP free?

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

### Is Function Health free?

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

### Which has better reviews, WHOOP or Function Health?

Function Health is rated higher. WHOOP averages 4.8 out of 5 from 87K ratings, while Function Health averages 4.9 from 25K ratings.

### Do WHOOP or Function Health have ads?

Neither WHOOP nor Function Health shows ads.

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

WHOOP ships an update weekly, and Function Health weekly. Most recently, WHOOP was updated on October 17, 2026 and Function Health on October 17, 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.*