# Kestrel LiNK vs Zelus WBGT

The clearest difference is in-app purchases: Kestrel LiNK at none against Zelus WBGT's 6. Kestrel LiNK also leads on iOS requirement (13.0 vs 15.6). Zelus WBGT's advantage is update cadence (every 4 weeks vs every 2 months) and chart position (#94 vs unranked). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Zelus WBGT sells 6 in-app purchases, starting at $4.49 per month. Kestrel LiNK asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 2.9 for Kestrel LiNK against 2.8 for Zelus WBGT. Both are backed by a comparable volume of ratings — 31 and 56 respectively. Written reviews are what separate them: 27% of Kestrel LiNK's written reviews are positive against 31% of Zelus WBGT's.

Kestrel LiNK ships an update every 2 months, Zelus WBGT every 4 weeks. Both last shipped on November 7, 2026.

## The numbers

| Metric | Kestrel LiNK | Zelus WBGT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.9 (31 ratings)](https://appshunter.io/ios/app/kestrel-link/id1489485544/reviews)** | [2.8 (56 ratings)](https://appshunter.io/ios/app/zelus-wbgt/id1605250081/reviews) |
| Number of ratings | 31 | **56** |
| Positive reviews | 27.3% of reviews | **31.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | — | **#94** |
| Size | 70 MB | 87 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nielsen-Kellerman Co.](https://appshunter.io/developer/698732840) | [Zelusports LLC](https://appshunter.io/developer/1598600165) |

## What reviewers say

### Kestrel LiNK

[App page](https://appshunter.io/ios/app/kestrel-link/id1489485544)

This application allows users to monitor, download, and share environmental data collected by Kestrel Instruments meters and data loggers. It provides a seamless way to send your weather information to the cloud for further analysis and accessibility.

**Highlights:** Monitor environmental data, Download data, Share data, Send data to the cloud, Connect with Kestrel Instruments devices

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

**In-app purchases:** none


### Zelus WBGT

[App page](https://appshunter.io/ios/app/zelus-wbgt/id1605250081)

**Currently charting:** #94 Top Grossing · Weather (US App Store)

This advanced system monitors outdoor environmental risks in real-time, including heat, lightning, and air quality. It provides essential tools for organizations to safeguard teams and ensure operational safety without needing extra hardware. Trusted globally by professionals for compliance and peace of mind.

**Highlights:** Real-time WBGT monitoring, Lightning detection alerts, AQI monitoring, Risk management tools, Automated data logging

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Club | $4.49 | per month |
| Pro | $19.99 | per month |
| Monthly AllStar | $29.99 | per month |
| Club | $49.99 | per year |
| Pro | $199.00 | per year |
| Yearly AllStar | $299.00 | per year |


## Frequently asked questions

### Is Kestrel LiNK free?

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

### Is Zelus WBGT free?

Zelus WBGT is free to download, with in-app purchases available.

### Which has better reviews, Kestrel LiNK or Zelus WBGT?

Kestrel LiNK is rated higher. Kestrel LiNK averages 2.9 out of 5 from 31 ratings, while Zelus WBGT averages 2.8 from 56 ratings.

### Do Kestrel LiNK or Zelus WBGT have ads?

Neither Kestrel LiNK nor Zelus WBGT shows ads.

### Which is updated more often, Kestrel LiNK or Zelus WBGT?

Kestrel LiNK ships an update every 2 months, and Zelus WBGT every 4 weeks. Most recently, Kestrel LiNK was updated on November 7, 2026 and Zelus WBGT on November 7, 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.*