Comparison

Warmup WSM vs FWAS

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Warmup WSM

This application controls your snow melting system using weather forecasts. It activates pre-heating based on upcoming snowfall, eliminating the need for external sensors and simplifying installation with an all-in-one unit.

Highlights
  • Weather forecast activation
  • Automatic snow melting
  • Pre-heating functionality
  • Sensor-free operation
  • All-in-one unit
Features
Read full description

Let the weather forecast activate your snow melting system. Warmup’s WSM-252W requires no sensors and automatically manages your snow melting system based on parameters set in the app. -Pre-heating: only the WSM-252W can activate the system in anticipation of the snowfall. Typical sensor-based controllers are reactive and require too much wattage and amperage -All in one: no more sensors or j-boxes. The WSM-252W is 12x12x6” with everything built-in

About

FWAS

This app provides critical weather information and custom alerts for firefighters to anticipate dangerous fire behavior. It offers map-based access to fire-specific weather data, including RAWS, NWS forecasts, and radar, helping to prevent entrapments.

Highlights
  • Custom weather alerts
  • RAWS/ASOS station data
  • Fire-specific weather forecasts
  • Satellite hotspot mapping
  • Incident location and fire perimeters
  • NWS watches, warnings, and advisories
  • NEXRAD radar data
Features
Read full description

Many firefighters have been entrapped due to rapid changes in weather causing unexpected fire behavior. These weather events are often predictable using local weather measurements and forecasts, but on-the-ground firefighters have historically lacked access to this information. The Fire Weather Alert System provides this access. It monitors nearby weather observations and forecasts to warn firefighters of dangerous incoming weather and provides convenient map-based access to fire-specific weather information (RAWS, NWS zone fire weather forecasts, NEXRAD radar data, etc.). GET CUSTOM WEATHER ALERTS • Get custom weather alerts when wind speed, wind gust, relative humidity, air temperature, and precipitation exceed your set thresholds. • RAWS/ASOS stations and short-term forecasts (HRRR model) are monitored. • Designate the watch area for your fire. • Alerts broadcast using in-app messages, text, and/or email. VIEW RAWS DATA • Select weather stations from a map and view data in graph and tabular form. • Access RAWS, iRAWS, ASOS, and other station networks. VIEW SATELLITE HOTSPOTS • Display VIIRS and MODIS hotspots on the map. VIEW INCIDENT LOCATIONS AND FIRE PERIMETERS • View incident name, type, size, and most recent perimeter (including smaller IA fires). VIEW NWS WATCHES, WARNINGS AND ADVISORIES • See National Weather Service Active Alerts on the map and read the text. • Monitor Red Flag Warnings, Fire Weather Watches, Wind Advisories, Severe Thunderstorm Warnings, etc. ACCESS ZONE FIRE WEATHER FORECASTS • Access and read your local fire weather forecast. • See fire weather zone names and boundaries on the map. MONITOR APPROACHING STORMS WITH NEXRAD RADAR • Display animated radar data on the map.

Screenshots

Warmup WSM4 screens
FWAS2 screens

Verdict

The call

The clearest difference is rating: FWAS at 3.3 against Warmup WSM's 3.0. FWAS also leads on iOS requirement (10.0 vs 13.0). Warmup WSM's advantage is review sentiment (33% vs 25%). On price, ratings volume, update cadence and ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

FWAS holds the better App Store score, 3.3 against 3.0. Both are backed by a comparable volume of ratings — 4 and 10 respectively. Written reviews complicate that: 33% of Warmup WSM's written reviews are positive against 25% of FWAS's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Warmup WSM ships an update every 7 months, FWAS every 4 months. The most recent releases landed on October 29, 2026 and November 3, 2026 respectively.

Scorecard3 real differences · 7 level
Warmup WSM versus FWAS: the parameters behind the verdict, then further details
ParameterWarmup WSMFWAS
PriceFreeFree
Rating3.0 (4 ratings)3.3 (10 ratings) — better
Positive reviews33.3% of reviews — better25.0% of reviews
Number of ratings410 — better
Update frequencyEvery 7 monthsEvery 4 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS13.010.0 — better
Further details — not scored
Size31 MB200 MB
Age rating4+4+
DeveloperClement HurelUS Forest Service

Customer experience

Warmup WSM

All ratings4 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews3 reviews
Positive33.3%
Neutral33.3%
Negative33.3%

FWAS

All ratings7 ratings
Positive42.9%
Neutral14.3%
Negative42.9%
Written reviews4 reviews
Positive25.0%
Neutral25.0%
Negative50.0%

In-app purchases

None

Warmup WSM

No in-app purchases

None

FWAS

No in-app purchases

Questions

Is Warmup WSM free?
Warmup WSM is free to download, with no in-app purchases.
Is FWAS free?
FWAS is free to download, with no in-app purchases.
Which has better reviews, Warmup WSM or FWAS?
FWAS is rated higher. Warmup WSM averages 3.0 out of 5 from 4 ratings, while FWAS averages 3.3 from 10 ratings.
Do Warmup WSM or FWAS have ads?
Neither Warmup WSM nor FWAS shows ads.
Which is updated more often, Warmup WSM or FWAS?
Warmup WSM ships an update every 7 months, and FWAS every 4 months. Most recently, Warmup WSM was updated on October 29, 2026 and FWAS on November 3, 2026.

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