# Studio Companion Watch App vs The Function Lab

Studio Companion Watch App and The Function Lab are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Studio Companion Watch App ships an update every 9 days, The Function Lab fortnightly. The most recent releases landed on October 13, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Studio Companion Watch App | The Function Lab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (7 ratings)](https://appshunter.io/ios/app/studio-companion-watch-app/id1643779061/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 42.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 days** | Fortnightly |
| Monetization | Free | — |
| Size | 48 MB | 42 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [F45 Training](https://appshunter.io/developer/895513031) | [The Function Lab LLC](https://appshunter.io/developer/1879017761) |

## What reviewers say

### Studio Companion Watch App

[App page](https://appshunter.io/ios/app/studio-companion-watch-app/id1643779061)

Enhance your F45 workouts with real-time heart rate sync and workout summaries directly on your Apple Watch. Track calories, duration, and progress seamlessly with Apple Health integration.

**Highlights:** Live heart rate sync to LionHeart, Real-time zones, points, and heart rate, Logs calories, duration, and workout summaries, Apple Health integration, Workout tracking without extra straps

**Features:** Apple Watch app

**In-app purchases:** none


### The Function Lab

[App page](https://appshunter.io/ios/app/the-function-lab/id6759491502)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Studio Companion Watch App free?

Studio Companion Watch App is free to download, with no in-app purchases.

### Is The Function Lab free?

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

### Do Studio Companion Watch App or The Function Lab have ads?

Neither Studio Companion Watch App nor The Function Lab shows ads.

### Which is updated more often, Studio Companion Watch App or The Function Lab?

Studio Companion Watch App ships an update every 9 days, and The Function Lab fortnightly. Most recently, Studio Companion Watch App was updated on October 13, 2026 and The Function Lab on October 1, 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.*