# Skyn vs Arborsense upGRADE

The clearest difference is rating: Arborsense upGRADE at 5.0 against Skyn's 3.1. Arborsense upGRADE also leads on iOS requirement (15.0 vs 26.0). Skyn's advantage is ratings volume (17 vs 2). On price, update cadence, 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.

Arborsense upGRADE holds the better App Store score, 5.0 against 3.1. That said, the two scores are not equally well evidenced: Skyn has 17 ratings behind it against 2, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 24, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Skyn | Arborsense upGRADE |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.1 (17 ratings)](https://appshunter.io/ios/app/skyn/id1537455256/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/arborsense-upgrade/id6636515039/reviews)** |
| Number of ratings | **17** | 2 |
| Positive reviews | 40.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free | Free |
| Size | 44 MB | 115 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 12+ |
| Developer | [KHN Solutions Inc](https://appshunter.io/developer/553347501) | [Arborsense, Inc.](https://appshunter.io/developer/1762911500) |

## What reviewers say

### Skyn

[App page](https://appshunter.io/ios/app/skyn/id1537455256)

This wearable biosensor tracks alcohol levels from your skin, estimating your blood alcohol content in near real-time. Connect it to the companion app via Bluetooth for continuous monitoring. For investigational use only, it's not a tool for determining driving safety.

**Highlights:** Wearable biosensor, Skin alcohol measurement, Estimated BAC range, Near real-time data, Bluetooth connectivity, Companion app integration

**Features:** Vision Pro support

**In-app purchases:** none


### Arborsense upGRADE

[App page](https://appshunter.io/ios/app/arborsense-upgrade/id6636515039)

This app pairs with a wearable device to continuously monitor alcohol vapors transpiring through your skin. It collects and records alcohol data periodically, allowing for real-time tracking via Bluetooth connection.

**Highlights:** Continuous transdermal alcohol monitoring, Bluetooth connectivity to wearable, Periodic data collection, Real-time alcohol vapor tracking, Wrist-worn device integration

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Skyn free?

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

### Is Arborsense upGRADE free?

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

### Which has better reviews, Skyn or Arborsense upGRADE?

Arborsense upGRADE is rated higher. Skyn averages 3.1 out of 5 from 17 ratings, while Arborsense upGRADE averages 5.0 from 2 ratings.

### Do Skyn or Arborsense upGRADE have ads?

Neither Skyn nor Arborsense upGRADE shows ads.

### Which is updated more often, Skyn or Arborsense upGRADE?

Skyn ships an update every 3 weeks, and Arborsense upGRADE every 3 weeks. Most recently, Skyn was updated on October 24, 2026 and Arborsense upGRADE 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.*