# Rubjoy vs Function Health

Rubjoy and Function Health both sit at 5.0 stars, but that hides the real split: 100% of Rubjoy's written reviews are positive against 62% of Function Health's. Rubjoy also leads on monetization model (free vs subscription) and device support (3 vs 1). Function Health's advantage is update cadence (weekly vs every 6 months) and ratings volume (25K vs 1). On price, rating, 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.

On the App Store both sit at effectively the same score — 5.0 for Rubjoy against 4.9 for Function Health. That said, the two scores are not equally well evidenced: Function Health has 25K ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 100% of Rubjoy's written reviews are positive against 62% of Function Health's.

Rubjoy ships an update every 6 months, Function Health weekly. The most recent releases landed on October 7, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Rubjoy | Function Health |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rubjoy/id1517267222/reviews)** | [4.9 (25K ratings)](https://appshunter.io/ios/app/function-health/id6471280307/reviews) |
| Number of ratings | 1 | **25K** |
| Positive reviews | **100.0% of reviews** | 61.8% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Weekly** |
| Monetization | **Free** | Subscription |
| Best chart rank | — | **#162** |
| Size | 82 MB | 203 MB |
| Requires iOS | **10.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [WINKGRIN LLC](https://appshunter.io/developer/1517267221) | [Function Health](https://appshunter.io/developer/1715014524) |

## What reviewers say

### Rubjoy

[App page](https://appshunter.io/ios/app/rubjoy/id1517267222)

Control an advanced robotic arm with your smartphone. This app connects via Bluetooth to a micro-controller, allowing you to operate powerful servo motors for complex tasks. It's designed for a serious robotic platform, not a simple toy.

**Highlights:** Bluetooth connectivity, Control servo motors, Advanced robotics, Smartphone interface, Micro-controller integration

**In-app purchases:** none


### Function Health

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

**Currently charting:** #162 Top Free · Health & Fitness (US App Store)

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 Rubjoy free?

Rubjoy 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, Rubjoy or Function Health?

Rubjoy is rated higher. Rubjoy averages 5.0 out of 5 from 1 ratings, while Function Health averages 4.9 from 25K ratings.

### Do Rubjoy or Function Health have ads?

Neither Rubjoy nor Function Health shows ads.

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

Rubjoy ships an update every 6 months, and Function Health weekly. Most recently, Rubjoy was updated on October 7, 2026 and Function Health on October 18, 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.*