# UPRIGHT vs Function Health

The clearest difference is monetization model: UPRIGHT at free against Function Health's subscription. UPRIGHT also leads on device support (3 vs 1). Function Health's advantage is review sentiment (62% vs 26%) and update cadence (weekly vs every 5 weeks). On price, ads, in-app purchases and iOS requirement 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 holds the better App Store score, 4.9 against 4.6. That said, the two scores are not equally well evidenced: Function Health has 25K ratings behind it against 3.9K, so its average is the more settled of the two. Written reviews point the same way: 26% of UPRIGHT's written reviews are positive against 62% of Function Health's.

UPRIGHT ships an update every 5 weeks, Function Health weekly. The most recent releases landed on October 13, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | UPRIGHT | Function Health |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (3.9K ratings)](https://appshunter.io/ios/app/upright/id1481438778/reviews) | **[4.9 (25K ratings)](https://appshunter.io/ios/app/function-health/id6471280307/reviews)** |
| Number of ratings | 3.9K | **25K** |
| Positive reviews | 25.6% of reviews | **62.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Weekly** |
| Monetization | **Free** | Subscription |
| Size | 90 MB | 202 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Upright Technologies Ltd](https://appshunter.io/developer/1098548242) | [Function Health](https://appshunter.io/developer/1715014524) |

## What reviewers say

### UPRIGHT

[App page](https://appshunter.io/ios/app/upright/id1481438778)

This app connects to a wearable device to provide real-time feedback on your posture. It helps you build awareness, strengthen core muscles, and establish good posture habits for improved health and confidence.

**Highlights:** Real-time posture feedback, Personalized daily goals, Posture training tutorial, Progress tracking and stats, Core muscle strengthening, Posture awareness development

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🚀 Effective in improving posture
- 🚀 Helpful real-time feedback
- 🚀 Intuitive app and device setup

**What reviewers complain about**

- 🐛 Connectivity issues with the app
- 🔋 High battery drain
- 🐛 Syncing and data tracking issues
- 🐛 Buggy app and software updates

**Reported bugs**

- App freezing and crashing
- Forced firmware updates causing device issues
- Inconsistent device performance and vibration detection

**Requested features**

- Apple Watch app integration
- Customizable goals and settings
- Improved data visualization and tracking


### 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 UPRIGHT free?

UPRIGHT 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, UPRIGHT or Function Health?

Function Health is rated higher. UPRIGHT averages 4.6 out of 5 from 3.9K ratings, while Function Health averages 4.9 from 25K ratings.

### Do UPRIGHT or Function Health have ads?

Neither UPRIGHT nor Function Health shows ads.

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

UPRIGHT ships an update every 5 weeks, and Function Health weekly. Most recently, UPRIGHT was updated on October 13, 2026 and Function Health on October 15, 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.*