Pegel vs Air Alarm G
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Pegel
Access real-time water levels, measurements, and forecasts for rivers, waterways, and coastal areas across Germany. View historical data, tide times, and relevant weather information directly on a map.
- Current water levels from numerous gauges
- Water-level forecasts
- Measurement history and trends
- High and low tide times
- Map with gauge locations
- Water and air temperatures
- Sunrise, sunset, moon phase, and weather info
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Pegel.app keeps current water levels, measurements and forecasts at your fingertips – clearly presented, quick to access and available directly on the map. The app displays gauges on rivers, waterways and coastal areas throughout Germany. The information is obtained from public data sources maintained by the Federal Waterways and Shipping Administration and other responsible authorities. Features: - Current water levels from numerous gauges - Water-level forecasts, where available - Forecast values grouped by date for several days - Measurement history and trends - Astronomical deviation between observed water levels and predicted tides, where available - High and low tide times at tidal gauges - Map with gauge locations - Sorting by name or distance - Search by gauge, waterway or region - Favourites for frequently used stations - Reference water levels and vertical datums - Water and air temperatures, where provided by the station - Sunrise, sunset, moon phase and weather information - German, English, French, Dutch, Norwegian and Spanish - For vessels 90 metres or longer, the app also calculates the permitted maximum speeds over ground on the tidal Elbe. The calculation is based on the official current data table published by the Federal Waterways and Shipping Administration and the high-water times at the four reference gauges. Whether you are monitoring a river, planning a trip, visiting the coast or spending time on the water, Pegel.app presents important water-level information in a clear and convenient format. The information shown is provided for general guidance. Official notices, flood warnings, traffic signs, instructions from vessel traffic services and nautical publications must always be followed for navigation and safety-related decisions.
Air Alarm G
Receive real-time, minute-by-minute alerts for ultrafine dust levels. This app provides instant notifications when air quality changes, utilizing precise sensor technology for accurate monitoring.
- Real-time ultrafine dust monitoring
- Minute-by-minute air quality updates
- Instant alerts for air quality changes
- Powered by Gonggam Sensor technology
- Precise air quality tracking
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Monitor PM₁.₀ in real time with minute-by-minute updates. Receive instant notifications when air quality changes so you can respond quickly. Powered by GGSensors technology, the app delivers accurate data from both GGSensors 1-minute monitors and hourly national monitoring stations across South Korea.
Screenshots
Verdict
The clearest difference is review sentiment: Air Alarm G at 100% against Pegel's 40%. On price, update cadence, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Pegel ships an update every 3 weeks, Air Alarm G every 6 weeks. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.
| Parameter | Pegel | Air Alarm G |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 40.0% of reviews | 100.0% of reviews — better |
| Update frequency | Every 3 weeks — better | Every 6 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 17.0 — better | 17.2 |
| Further details — not scored | ||
| Size | 3 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Hans-Jurgen Beckmerhagen | 주식회사 공감센서 |
Customer experience
Pegel
Air Alarm G
In-app purchases
Pegel
No in-app purchases
Air Alarm G
No in-app purchases









