# umweltinfo vs Cyanometer

The clearest difference is price: umweltinfo at Free against Cyanometer's $0.99. umweltinfo also leads on update cadence (every 5 months vs every 39 months) and review sentiment (50% vs 25%). Cyanometer's advantage is chart position (#186 vs unranked). On ads, in-app purchases and device support there is nothing between them.

umweltinfo is free to download; Cyanometer costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

umweltinfo ships an update every 5 months, Cyanometer every 39 months. The most recent releases landed on October 16, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | umweltinfo | Cyanometer |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | — | **[2.8 (4 ratings)](https://appshunter.io/ios/app/cyanometer/id1476812898/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | **50.0% of reviews** | 25.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 39 months |
| Monetization | **Free** | Paid |
| Best chart rank | — | **#186** |
| Size | 50 MB | 14 MB |
| Requires iOS | **12.0** | 16 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Bayerisches Staatsministerium fuer Umwelt und Verbraucherschutz](https://appshunter.io/developer/1876248896) | [Jan-Hendrik von Kuick](https://appshunter.io/developer/1190145903) |

## What reviewers say

### umweltinfo

[App page](https://appshunter.io/ios/app/umweltinfo/id1046531427)

Receive instant alerts for natural and environmental hazards like floods, severe weather, and ozone levels. Stay informed about your local environmental conditions, including air quality and pollen forecasts. Customize alerts for up to five locations and share important warnings with others.

**Highlights:** Real-time hazard warnings (flood, weather, avalanche), Environmental condition monitoring (air quality, pollen), Customizable alerts for up to five locations, Push notifications for immediate alerts, Location-independent environmental information via GPS, Share warning function

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

**In-app purchases:** none


### Cyanometer

[App page](https://appshunter.io/ios/app/cyanometer/id1476812898)

**Currently charting:** #186 Top Paid · Weather (US App Store)

Measure the intensity of blue in the sky to understand atmospheric conditions. Save scans with location and time data for comparison across different places. Offers modern, historical, and custom color scales.

**Highlights:** Measure sky blueness intensity, Modern, Saussure, and custom scales, Save scans with date, time, and location, Compare sky conditions across locations, Privacy-focused, no external data processing

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

**In-app purchases:** none


## Frequently asked questions

### Is umweltinfo free?

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

### Is Cyanometer free?

Cyanometer costs $0.99, with no in-app purchases.

### Do umweltinfo or Cyanometer have ads?

Neither umweltinfo nor Cyanometer shows ads.

### Which is updated more often, umweltinfo or Cyanometer?

umweltinfo ships an update every 5 months, and Cyanometer every 39 months. Most recently, umweltinfo was updated on October 16, 2026 and Cyanometer on October 9, 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.*