Comparison

StormThreat vs CloudySky2

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

Head to head
About

StormThreat

Visualize severe weather outlooks from the Storm Prediction Center on an interactive map. Easily understand tornado, wind, and hail risks with clear color shading and detailed SPC discussions. Ideal for staying informed about potential weather threats.

Highlights
  • Interactive storm forecast map
  • Convective outlooks (Today/Tomorrow/Next few days)
  • Tornado and thunderstorm watch outlines
  • SPC discussion areas
  • Risk color shading
  • Tap to view risk details
Features
Read full description

Is today a day to watch the sky? StormThreat shows where tornadoes, damaging wind, and large hail are most likely, straight from NOAA's Storm Prediction Center (SPC), on one fast, zoomable map. Instead of digging through government web pages, open StormThreat and see the threat for your location in seconds. WHAT YOU GET • SPC convective outlooks for today, tomorrow, Day 3, and Days 4–8 • Tornado, damaging wind, and large hail probabilities in SPC's official colors • SPC's new intensity hatching (CIG 1–3), showing where the strongest tornadoes, winds, and hail are possible • Active Tornado and Severe Thunderstorm Watches, including PDS watches • Mesoscale Discussions that explain when a watch may be coming • Today's local storm reports for tornadoes, wind damage, and large hail • An archive of past outlooks and reports back to 1987 Tap any area for its risk category and details. Pinch and pan to move from your county to the whole country, with street, satellite, and hybrid maps, plus county, state, and NWS office boundaries. NOW ON APPLE WATCH StormThreat Pro includes an Apple Watch companion: • Your SPC risk level at a glance, on a ring in SPC's category colors • Alerts when your location enters a risk area or the risk goes up • Alerts when you're inside an active Tornado Watch, Severe Thunderstorm Watch, or Mesoscale Discussion • Tornado, wind, and hail chances, plus watch-face complications Connect your watch with one tap from the iPhone app. BUILT FOR • Families who want to know "Is today a bad day?" • Meteorologists who never want to miss a Mesoscale Discussion or watch issuance • Emergency managers and first responders who follow SPC products all day • Storm chasers and spotters who live in the outlooks and watches FREE AND PRO Free: the Day 1 outlook, active watches, storm reports, and the last 3 days of the archive. StormThreat Pro adds Day 2, Day 3, and Day 4–8 Outlooks, Mesoscale Discussions, the full archive back to 1987, and the Apple Watch companion. StormThreat Pro is an auto-renewing subscription: $2.99 per month, or $19.99 per year with a 7-day free trial. Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless canceled at least 24 hours before the end of the current period, and your account is charged for renewal within 24 hours before the period ends. Manage or cancel anytime in your App Store account settings. Any unused portion of a free trial is forfeited when you purchase a subscription. Prices may vary by country. IMPORTANT StormThreat shows SPC (Storm Prediction Center) forecasts and watches (severe thunderstorm and tornado), which are usually issued prior to a local Weather Forecast Office issuing warnings if the need develops. Always follow the National Weather Service, local media, and NOAA Weather Radio for warnings and life-saving information. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://stormthreat.app/privacy.html

About

CloudySky2

Identify and learn about different cloud types with this pocket field guide. Explore detailed information, photos, and weather map symbols to enhance your understanding and enjoyment of the sky.

Highlights
  • Cloud identification guide
  • Detailed cloud characteristics
  • Photo index of cloud types
  • Weather map symbol chart
  • Cloud formation explanations
  • In-app photo logging
  • Share photos via iMessage/email
Features
Read full description

More than just a picture gallery of clouds, CloudySky2 is an easy to use and complete pocket field guide for your iPhone and iPad that will help you to enjoy and better understand clouds by quickly identifying their names and characteristics. Just look up in the sky and get your head in the clouds. Take your time. This is not learning as a test, but learning for your enjoyment. When you are out for a walk the clouds are there for you to enjoy, and with CloudySky in your hands you will appreciate them even more. Look at the clouds around you and then take CloudySky2 out of your pocket, purse or bag and easily learn the names and characteristics of the clouds at your own pace. You will be surprised and pleased how over time your appreciation of clouds will grow and your enjoyment of them, with the knowledge you get with CloudySky2, will increase. CloudySky2 includes: A beautiful cloud chart/photo collage that gives you an overview of the ten main types of clouds A photo index of all the major cloud types grouped by the major elevation categories (étages) A relative elevation scale on the cloud chart that can be toggled between miles, kilometers or off A detailed view of each cloud type that gives you quick access to everything you would like to know about that cloud A photo index of all the species, varieties, supplemental features and accessory clouds for each cloud type A chart with all of the symbols used in weather maps for every cloud 90+ stunning photos to help you identify the cloud you are looking at All image are fully licensed and attributed from the Wikimedia Commons source Useful, authoritative and detailed explanations of how clouds form, what their distinguishing features are, how they are categorized and a history of how the clouds came to be named as they are Take photos from within the app, save them to the Cloud Log and share them with others via email and iMessage Add your own photos to the Cloud Log from your Photos library and classify them with their genus and subtype Annotate the photos you take with your own Observation Notes So, get CloudySky and get your head in the clouds!

Screenshots

StormThreat4 screens
CloudySky24 screens

Verdict

The call

The clearest difference is rating: CloudySky2 at 5.0 against StormThreat's 4.0. CloudySky2 also leads on in-app purchases (none vs 1) and update cadence (every 3 days vs every 4 months). StormThreat's advantage is ratings volume (4 vs 1) and device support (4 vs 2). On price 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. StormThreat sells 1 in-app purchase, starting at $7.99 per year. CloudySky2 asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

CloudySky2 holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

UpkeepUpdate frequency

StormThreat ships an update every 4 months, CloudySky2 every 3 days. The most recent releases landed on October 15, 2026 and October 13, 2026 respectively.

Scorecard7 real differences · 3 level
StormThreat versus CloudySky2: the parameters behind the verdict, then further details
ParameterStormThreatCloudySky2
PriceFreeFree
Rating4.0 (4 ratings)5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings4 — better1
Update frequencyEvery 4 monthsEvery 3 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad
Requires iOS15.0 — better26.2
Further details — not scored
Size31 MB38 MB
Age rating9+4+
DeveloperUltimate EnterprisesWonder Valley Software

Customer experience

StormThreat

All ratings4 ratings
Positive75.0%
Neutral0.0%
Negative25.0%

CloudySky2

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

In-app purchases

1 purchases

StormThreat

Subscriptions1
  • StormThreat Pro (Annual)$7.991 Year
None

CloudySky2

No in-app purchases

Questions

Is StormThreat free?
StormThreat is free to download, with in-app purchases available.
Is CloudySky2 free?
CloudySky2 is free to download, with no in-app purchases.
Which has better reviews, StormThreat or CloudySky2?
CloudySky2 is rated higher. StormThreat averages 4.0 out of 5 from 4 ratings, while CloudySky2 averages 5.0 from 1 ratings.
Do StormThreat or CloudySky2 have ads?
Neither StormThreat nor CloudySky2 shows ads.
Which is updated more often, StormThreat or CloudySky2?
StormThreat ships an update every 4 months, and CloudySky2 every 3 days. Most recently, StormThreat was updated on October 15, 2026 and CloudySky2 on October 13, 2026.

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