# Hygrometer Barometer vs Stelt Viewer

The clearest difference is in-app purchases: Stelt Viewer at none against Hygrometer Barometer's 1. Stelt Viewer also leads on ads (none vs shown) and update cadence (every 5 weeks vs every 7 months). Hygrometer Barometer's advantage is iOS requirement (13 vs 15.0). On price and device support there is nothing between them.

Both are free to download. Hygrometer Barometer sells 1 one-off in-app purchase. Stelt Viewer asks for nothing beyond the download.

Hygrometer Barometer ships an update every 7 months, Stelt Viewer every 5 weeks. The most recent releases landed on October 17, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Hygrometer Barometer | Stelt Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (152 ratings)](https://appshunter.io/ios/app/hygrometer-barometer/id888520226/reviews)** | — |
| Number of ratings | **152** | — |
| Positive reviews | 72.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 7 months | **Every 5 weeks** |
| Monetization | Ad-supported | — |
| Size | 11 MB | 248 MB |
| Requires iOS | **13** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SHIGETO TAKAGI](https://appshunter.io/developer/519611619) | [Smarted srl](https://appshunter.io/developer/1740698356) |

## What reviewers say

### Hygrometer Barometer

[App page](https://appshunter.io/ios/app/hygrometer-barometer/id888520226)

This app measures relative humidity and calculates the discomfort index using your current location. It displays humidity in a badge and offers barometric readings for compatible devices. Use it to gauge outdoor conditions for appropriate clothing choices.

**Highlights:** Measures relative humidity via GPS, Calculates discomfort index (DI), Displays humidity in badge, Barometric pressure readings (iPhone 6+), Outdoor humidity reference

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### Stelt Viewer

[App page](https://appshunter.io/ios/app/stelt-viewer/id6484589392)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Hygrometer Barometer free?

Hygrometer Barometer is free to download, with in-app purchases available.

### Is Stelt Viewer free?

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

### Do Hygrometer Barometer or Stelt Viewer have ads?

Hygrometer Barometer shows ads; Stelt Viewer does not.

### Which is updated more often, Hygrometer Barometer or Stelt Viewer?

Hygrometer Barometer ships an update every 7 months, and Stelt Viewer every 5 weeks. Most recently, Hygrometer Barometer was updated on October 17, 2026 and Stelt Viewer 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.*