# UNC Well Aware vs Constella Sky

The clearest difference is update cadence: Constella Sky at every 5 days against UNC Well Aware's fortnightly. On price, rating, ratings volume 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 — 5.0 for UNC Well Aware against 5.0 for Constella Sky. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UNC Well Aware ships an update fortnightly, Constella Sky every 5 days. The most recent releases landed on October 9, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | UNC Well Aware | Constella Sky |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/unc-well-aware/id1582671776/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/constella-sky/id6797038223/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 5 days** |
| Monetization | Free | — |
| Size | 26 MB | 142 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [University of North Carolina at Chapel Hill](https://appshunter.io/developer/924947571) | [QUIET EYE ADVISORS LLC](https://appshunter.io/developer/6785305409) |

## What reviewers say

### UNC Well Aware

[App page](https://appshunter.io/ios/app/unc-well-aware/id1582671776)

This app empowers well owners to test their water for lead, microbial, and arsenic contamination using at-home kits. It utilizes machine learning and color analysis to interpret test results and provides connections to local resources for further action.

**Highlights:** At-home water testing, Lead, microbe, and arsenic detection, AI-powered result analysis, Connect to local resources, Water test history, Citizen science participation

**Features:** macOS Compatibility

**In-app purchases:** none


### Constella Sky

[App page](https://appshunter.io/ios/app/constella-sky/id6797038223)

**In-app purchases:** none


## Frequently asked questions

### Is UNC Well Aware free?

UNC Well Aware is free to download, with no in-app purchases.

### Is Constella Sky free?

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

### Which has better reviews, UNC Well Aware or Constella Sky?

UNC Well Aware and Constella Sky are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do UNC Well Aware or Constella Sky have ads?

Neither UNC Well Aware nor Constella Sky shows ads.

### Which is updated more often, UNC Well Aware or Constella Sky?

UNC Well Aware ships an update fortnightly, and Constella Sky every 5 days. Most recently, UNC Well Aware was updated on October 9, 2026 and Constella Sky on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*