SiteWarn vs AvWx
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SiteWarn
Receive site-specific weather information, forecasts, and storm warnings 24/7. Get proactive alerts from meteorologists and view detailed radar maps for informed decision-making during adverse weather.
- Site-specific weather information
- 24/7 storm warnings
- Proactive meteorologist alerts
- Customized geographic coverage
- Moving asset tracking
- High-resolution radar maps
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SiteWarn by WeatherGuidance delivers fully customized, site-specific weather information, forecasts and storm warnings directly into the hands of decision makers 24/7/365. Every second counts in severe and other adverse weather situations, and SiteWarn's proprietary technology allows designated users to make informed decisions during those critical moments. SiteWarn alerts, advisories and warnings are created and issued by WeatherGuidance’s own meteorologists, who monitor your locations and other assets 24/7/365 and notify you when they will be impacted by severe or other adverse weather conditions. SiteWarn provides customized weather coverage for: -Single or multiple fixed locations, such as buildings, campuses, site locations, etc. -Pre-defined geographic areas, such as a general service area or other boundary -Segments, such as highways, power lines, pipelines and air routes -Moving assets, where the warning follows the phone or other mobile device wherever it is carried by designated users in the field (requires a GPS enabled device with permissions) With SiteWarn you can: -Receive alert notifications proactively sent to you by WeatherGuidance meteorologists -View public warnings issued by the government for larger, non-specific geographic areas -Have quick access to your organization’s standard operating procedures matching the warnings that are issued (optional) -Pan, zoom and animate the highest resolution, most up-to-date radar as well as view active advisories, warnings and customized site location markers on the same interactive map -View current conditions and the latest WeatherGuidance SiteWarn Forecast for your location(s) A cellular or WiFi data connection as well as SiteWarn service from WeatherGuidance are required in order to activate and use this application.
AvWx
Provides pilots and dispatchers with fast, reliable aviation weather information. It integrates data from official sources into an intuitive interface for operational decision-making, offering features like METAR/TAF analysis and advisory highlights.
- METAR & TAF runway wind components
- FAA Advisories integration
- Unlimited airport tracking (Pro)
- Extended Apple Weather forecasts (Pro)
- Sun & moon events visualization (Pro)
- Alternate requirements highlighting (Pro)
- Offline-aware operation
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Situational awareness for pilots and dispatchers — every airport you care about, on one screen. AvWx brings NOAA's forecasts and radar, AviationWeather.gov, FAA advisories and NOTAMs, Digital ATIS, NWS alerts and Apple Weather into one picture, so you can read a whole day of flying without opening five apps. TAF TIMELINE Every TAF drawn on one time axis: TEMPO and PROB groups in their own band, each hour's worst ceiling and visibility with its flight category, runway wind components, the current METAR overlaid, and NOAA's hourly forecast beneath it. NOAA METEOGRAM One day, hour by hour: clouds by altitude to 45,000 ft, the freezing level, precipitation and snowfall by type, winds aloft and the flight category — each reading labeled with the NOAA model behind it. MAPS AND RADAR NOAA's newest radar scans looped over the last hour, storm cells with motion arrows, lightning within minutes of the flash, satellite clouds, fronts, NWS alert regions, worldwide forecast layers, airspace, and satellite imagery down to the runway. ALSO • Ceiling and visibility every 15 minutes for six hours in the US, and out to a week worldwide • NOTAMs worldwide, straight from the FAA's NOTAM Management Service — closed runways and approach aids out of service marked on the runway table and METAR tiles, closures drawn on the satellite view • Traffic flow and the runways in use, handy at non-towered fields • SIGMETs, CWAs and NWS alerts matched to your airport's position, not just its region • Decoded D-ATIS, METAR tiles, favored runways, density altitude, sun and moon • Saved places beyond airports — home, layovers, anywhere — with full forecasts FREE: up to five airports, METAR and TAF, the TAF timeline, NOTAMs, traffic flow and FAA advisories. PREMIUM: unlimited airports, the maps and radar, the NOAA meteogram and charts, Apple Weather's tiles and charts, and no ads. One-week free trial. An in-app Guide and Legend explain every bar and color. AvWx is a professional supplement, not a replacement for certified flight-planning tools. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://avwxllc.github.io/privacy-policy.md
Screenshots
Verdict
The clearest difference is review sentiment: AvWx at 100% against SiteWarn's 50%. AvWx also leads on update cadence (every 2 weeks vs every 6 weeks) and ratings volume (8 vs 2). SiteWarn's advantage is rating (5.0 vs 4.5) and in-app purchases (none vs 2). On price and device support 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. AvWx sells 2 in-app purchases, starting at $0.99 per month. SiteWarn asks for nothing beyond the download.
SiteWarn holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 2 and 8 respectively. Written reviews complicate that: 50% of SiteWarn's written reviews are positive against 100% of AvWx's, so the app with the better star average is not the one people write more warmly about.
SiteWarn ships an update every 6 weeks, AvWx every 2 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.
| Parameter | SiteWarn | AvWx |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 4.5 (8 ratings) |
| Positive reviews | 50.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 2 | 8 — better |
| Update frequency | Every 6 weeks | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.1 — better | 18.2 |
| Further details — not scored | ||
| Size | 33 MB | 115 MB |
| Age rating | 17+ | 4+ |
| Developer | Rob White | AvWx, LLC |
Customer experience
SiteWarn
AvWx
In-app purchases
SiteWarn
No in-app purchases
AvWx
- All Access7 Days trial$0.991 Month
- All Access7 Days trial$9.991 Year









