Ventify vs Schmuddelwetter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ventify
This app analyzes indoor and outdoor conditions to advise on optimal ventilation for humidity control. It converts relative humidity to absolute values, providing clear recommendations on whether airing out a room is beneficial. Supports HomeKit and automatic weather data retrieval.
- Absolute humidity calculation
- Ventilation recommendations
- HomeKit integration
- Automatic weather data
- Celsius and Fahrenheit support
- Sensor integration
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Ventify helps you find out whether airing out your room will increase or decrease its humidity. Relative humidity depends on temperature and does not reflect the actual amount of water in the air. However, when ventilating, absolute humidity is what matters. That’s why fresh outside air, even with seemingly low relative humidity, can still raise the humidity indoors. Ventify converts relative humidity into absolute values and gives you a clear recommendation on whether ventilating makes sense. Convenient and automatic: Ventify supports HomeKit, current weather data, and both **Celsius and Fahrenheit**. You can select a room with temperature or humidity sensors, so Ventify automatically uses these values. Alternatively, you can define a location from which weather data is automatically retrieved. This way you save manual input and get results even faster.
Schmuddelwetter
Get detailed weather forecasts, animated radar, and severe weather alerts for Germany. Customize rain predictions, view storm and wind maps, and receive personalized warnings. Includes a daily weather report and augmented reality sun finder.
- 60-minute precipitation forecast in 5-minute steps
- Animated rain radar with timeline
- Severe weather warnings (DWD)
- Customizable rain alerts
- Storm, wind, and cloud maps
- Daily weather report
- AR sun finder
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This version mainly brings improvements and fixes: • Switch off the seagull: Under Settings, Appearance, you can turn the seagull off. It then disappears from the whole app, and the app icon becomes a cloud • Lock Screen: The rain graph no longer gets stuck on an old reading • Widgets, the Lock Screen and Apple Watch now follow the rain radar. When the radar shows no rain, they show dry weather too • Thunderstorms show up more reliably in widgets and on Apple Watch • The rain card now tells you how long the rain will last • Day and night follow the position of the sun at the chosen place • Apple Watch: Complications are no longer cut off, in English and on smaller watches too. Corner complications show their scale again
Screenshots
Verdict
The clearest difference is price: Schmuddelwetter at Free against Ventify's $0.99. Schmuddelwetter also leads on update cadence (every 10 days vs every 2 months). Ventify's advantage is in-app purchases (none vs 3). On review sentiment, ads, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Schmuddelwetter is free to download; Ventify costs $0.99 up front. Schmuddelwetter sells 3 one-off in-app purchases. Ventify asks for nothing beyond the download.
Ventify ships an update every 2 months, Schmuddelwetter every 10 days. The most recent releases landed on November 8, 2026 and November 6, 2026 respectively.
| Parameter | Ventify | Schmuddelwetter |
|---|---|---|
| Price | $0.99 | Free — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Update frequency | Every 2 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Requires iOS | 18.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 100 MB |
| Age rating | 4+ | 4+ |
| Developer | Johannes Bauer | Dennis Schweitzer |
Customer experience
Ventify
Schmuddelwetter
In-app purchases
Ventify
No in-app purchases
Schmuddelwetter
- Small Fries$1.99
- Large Special Fries$3.99
- Lifetime Fries Supply$8.99









