Comparison

Storm Window vs Fat Tail Weather

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

Head to head
About

Storm Window

This app provides clear outdoor risk guidance based on hourly weather data, highlighting safe times for outdoor activities. It accounts for lightning, heat, wind, air quality, and rain, offering tailored advice for various pursuits.

Highlights
  • Clear outdoor risk guidance
  • 48-hour hourly risk timeline
  • Lightning-aware storm risk
  • Heat, air quality, wind, UV, rain, snow context
  • National Weather Service alert awareness
  • Home Screen widgets and Apple Watch support
Features
Read full description

Storm Window helps you find safer outdoor windows when weather risk is changing. Instead of giving you another raw forecast, Storm Window turns hourly weather data into a clear outdoor risk timeline, highlighting when conditions look clear, marginal, stormy, or severe. Built for runners, cyclists, walkers, golfers, beach days, trail time, work crews, and anyone who plans around lightning, heat, wind, air quality, and rain. Core features: • Clear "go / wait" style outdoor risk guidance • 48-hour hourly risk strip, shown as bars or dots • Lightning-aware storm risk • Heat, air quality, wind, UV, rain, and snow context • National Weather Service alert awareness • Current-location planning, plus one saved place • Home Screen widgets and Apple Watch support • Built-in explanations of what's driving each hour's risk Storm Window Pro adds: • Multiple saved locations • Activity-specific risk profiles (runner, cyclist, golfer, and more) • Custom activity profiles • Personal heat and AQI sensitivity tuning • Full hourly detail on tap • Driest-stretch highlight within your safe window • Per-location widgets and complications Storm Window Pro+ adds: • Trips: pin an upcoming event and get its own safe-window forecast and alerts • "Should I Go?" activity-aware guidance • Forecast change reviews and 48-hour forecast summaries • Apple Intelligence-powered risk explanations on supported devices — all features work without it Storm Window uses deterministic risk rules for its core safety assessment. Pro+ guidance does not replace the underlying risk rating. Storm Window is forecast guidance, not a guarantee of safe conditions. Weather can change quickly. When thunder roars, go indoors. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Fat Tail Weather

Get real-time weather data directly from airport sensors, offering precise measurements instead of model estimates. View current conditions, forecasts, and aviation-inspired color codes for clarity. Know exactly what's happening with the weather, no guesswork involved.

Highlights
  • Live airport sensor readings
  • Precise weather measurements
  • Hourly and 7-day forecasts
  • Aviation color-coded conditions
  • Compass-guided wind arrow
  • Multiple location saving
Features
Read full description

Fat Tail is weather without the guesswork. Most weather apps show you a model's estimate, interpolated for your area. Fat Tail shows you what's actually happening — live readings from professionally maintained, calibrated sensors at the airports nearest you. It's the same data pilots trust before takeoff, decoded into a clean, bold report anyone can read. REAL MEASUREMENTS, NOT ESTIMATES Temperature, feels-like, humidity, dew point, wind, gusts, visibility, pressure, and cloud layers — measured at the source and updated the moment conditions change, not just on the hour. YOUR LOCAL FIELD REPORT Open the app and it finds the closest reporting stations automatically. See exactly which airport your reading comes from, how far away it is, and how fresh the observation is. Compare nearby stations with one tap. A WIND ARROW THAT ACTUALLY POINTS Enable the compass and the wind arrow tracks as you turn — it always points the true direction the wind is moving, like holding a hand compass. FORECASTS FROM NOAA'S BEST Hourly and 7-day forecasts powered by the National Blend of Models — the multi-model blend NWS forecasters themselves start from. Rain, snow, and storm chances shown big and clear, with the peak hour called out. MORE AT A GLANCE Conditions rated with aviation color codes — green when it's clear, red when it's rough Sunrise and sunset, calculated for your exact location Save up to 10 locations for one-tap checks The raw station report included, for the curious No accounts. No ads. No tracking. Your location never leaves your phone. Weather's biggest days are the rare ones — the fat tail. Know what's really out there.

Screenshots

Storm Window4 screens
Fat Tail Weather4 screens

Verdict

The call

The clearest difference is in-app purchases: Fat Tail Weather at none against Storm Window's 4. Fat Tail Weather also leads on update cadence (daily vs every 5 days) and ratings volume (5 vs 1). Storm Window's advantage is device support (3 vs 1). On price, rating, review sentiment 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. Storm Window sells 4 in-app purchases, starting at $2.99 per month. Fat Tail Weather asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Storm Window against 5.0 for Fat Tail Weather. That said, the two scores are not equally well evidenced: Fat Tail Weather has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Storm Window ships an update every 5 days, Fat Tail Weather daily. The most recent releases landed on October 25, 2026 and October 20, 2026 respectively.

Scorecard6 real differences · 4 level
Storm Window versus Fat Tail Weather: the parameters behind the verdict, then further details
ParameterStorm WindowFat Tail Weather
PriceFreeFree
Rating5.0 (1 ratings)5.0 (5 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings15 — better
Update frequencyEvery 5 daysDaily — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, Apple Watch — betteriPhone
Requires iOS26.016.4 — better
Further details — not scored
Size48 MB37 MB
Age rating4+4+
DeveloperDaniel SchumacherCameron Melcher

Customer experience

Storm Window

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Fat Tail Weather

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

4 purchases

Storm Window

Subscriptions4
  • Storm Window Pro Monthly$2.991 Month
  • Pro+ Monthly$4.991 Month
  • Storm Window Pro Annual7 Days trial$19.991 Year
Show 1 more
  • Pro+ Annual7 Days trial$29.991 Year
None

Fat Tail Weather

No in-app purchases

Questions

Is Storm Window free?
Storm Window is free to download, with in-app purchases available.
Is Fat Tail Weather free?
Fat Tail Weather is free to download, with no in-app purchases.
Which has better reviews, Storm Window or Fat Tail Weather?
Storm Window and Fat Tail Weather are both rated 5.0 out of 5 on the App Store, from 1 and 5 ratings respectively.
Do Storm Window or Fat Tail Weather have ads?
Neither Storm Window nor Fat Tail Weather shows ads.
Which is updated more often, Storm Window or Fat Tail Weather?
Storm Window ships an update every 5 days, and Fat Tail Weather daily. Most recently, Storm Window was updated on October 25, 2026 and Fat Tail Weather on October 20, 2026.

Other comparisons