Comparison

WeatherBolt vs Undercast Weather Aether

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

Head to head
About

WeatherBolt

Visualize live lightning strikes on a detailed radar map and receive storm proximity alerts. Access high-resolution weather data including radar, satellite imagery, wind, waves, and tides. Customize forecasts and safety thresholds to your needs.

Highlights
  • Live lightning strike visualization
  • High-resolution radar and satellite maps
  • Customizable storm proximity alerts
  • Detailed wind, wave, and tide data
  • Hourly and 7-day forecasts
  • Apple Watch complications
Features
Read full description

WeatherBolt (formerly HarborCast) shows radar, lightning and the forecast for the places you save, with tides and marine tools you can turn on if you are out on the water. RADAR A radar map that plays back the last 2 hours. Pan, zoom and scrub back through time to see where rain is heading. Radar is free. LIVE LIGHTNING See lightning strikes on the map as they happen, with the distance to the nearest one. A short free preview is included. Live lightning is part of Pro. ALERTS AND STORMS Pro sends a notification when lightning is close, or when a tropical storm's forecast path comes within the distance you pick, even when the app is closed. Pro also adds storm tracks, cones and forecast points. FORECAST Current conditions, the next hours and a daily forecast. Free shows today and the next 3 days. Pro shows all 7 days. YOUR OWN LIMITS Set your own numbers for wind, gusts, rain and visibility (and waves with Tides & marine on). The app rates each hour Good, Caution or Danger against them. Saving your limits is part of Pro. WIDGETS AND APPLE WATCH Home Screen widgets and Watch complications show current conditions. TIDES AND MARINE Optional. Turn on tides and the marine forecast if you spend time on the water. DATA Weather data comes from NOAA, the National Weather Service and NASA imagery. WeatherBolt is not endorsed by NOAA. Pricing and any free trial are shown in the app and on the App Store before you subscribe. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://topshopnation.com/weatherbolt/privacy.html

About

Undercast Weather Aether

Features
Currently charting
Read full description

UndercastWeather Aether delivers National Weather Service forecasts alongside on-device, model-enhanced predictions you can compare side by side. The idea is simple: you should be able to see the official forecast AND a smarter interpretation of it — without giving up your privacy. WHAT MAKES UNDERCAST DIFFERENT • Dual-mode forecasts — switch between raw NWS data and Aether-enhanced predictions with a tap • On-device learning — Aether refines its forecasts using local signals; nothing leaves your device • Severe weather Live Activities — Tornado, Thunderstorm, Flood, and other warnings appear on your Lock Screen and in the Dynamic Island the moment they're issued, with hazard-specific icons • Astronomical data — sunrise, sunset, moon phase, and twilight times sourced from the U.S. Naval Observatory • Searchable — find any U.S. location by ZIP code, city, or state, no location sharing required BUILT FOR APPLE PLATFORMS Native experiences on Mac, iPhone, and iPad — with a Home Screen widget for at-a-glance conditions. ONGOING UPDATES UndercastWeather regularly updates Aether to improve accuracy, performance, and features. PRIVACY FIRST Aether's learning happens on device. Your trained data never leaves your devices — with optional iCloud sync, it moves only between your Apple devices through your private iCloud account. You don't need to share your location to use the app, and we don't collect telemetry on your forecast usage. Our apps do not use third-party analytics, advertising SDKs, tracking SDKs, data brokers, or third-party service connections. We encourage every user to turn on Apple’s App Privacy Report to see this for themselves. To enable App Privacy Report on iPhone or iPad, open Settings > Privacy & Security > App Privacy Report > Turn On App Privacy Report. After you use the app for a while, iOS will show the network domains contacted by the app. For our apps, expected network activity should be limited to Apple-operated services needed for normal App Store, iCloud, device, or system functionality. In our weather app, you may also see direct connections to official weather or environmental data sources, such as NOAA, EPA, or similar public data originators used to provide the requested forecast, alert, air-quality, or environmental information. We believe privacy claims should be inspectable, not merely promised. NOTE Only locations within the United States are supported, as Aether is trained (on device) on data sourced by you from the National Weather Service.

Screenshots

WeatherBolt4 screens
Undercast Weather Aether4 screens

Verdict

The call

The clearest difference is price: WeatherBolt at Free against Undercast Weather Aether's $9.99. Undercast Weather Aether's advantage is in-app purchases (none vs 2) and chart position (#62 vs unranked). On update cadence, ads, device support and iOS requirement 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

WeatherBolt is free to download; Undercast Weather Aether costs $9.99 up front. WeatherBolt sells 2 in-app purchases, starting at $3.99 per month. Undercast Weather Aether asks for nothing beyond the download.

UpkeepUpdate frequency

WeatherBolt ships an update every 4 days, Undercast Weather Aether weekly. The most recent releases landed on November 5, 2026 and November 9, 2026 respectively.

Scorecard3 real differences · 8 level
WeatherBolt versus Undercast Weather Aether: the parameters behind the verdict, then further details
ParameterWeatherBoltUndercast Weather Aether
PriceFree — better$9.99
Rating5.0 (4 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings4 — better—
Update frequencyEvery 4 days — betterWeekly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
Best chart rank—#62 — better
DevicesiPhone, iPad, Apple WatchiPhone, iPad, Mac, Apple Watch — better
Requires iOS17.0 — better18.0
Further details — not scored
Size15 MB13 MB
Age rating4+4+
DeveloperCoreForge LLCNope Dragon LC

In-app purchases

2 purchases

WeatherBolt

Subscriptions2
  • WeatherBolt Pro3 Days trial$3.991 Month
  • WeatherBolt Pro3 Days trial$24.991 Year
None

Undercast Weather Aether

No in-app purchases

Questions

Is WeatherBolt free?
WeatherBolt is free to download, with in-app purchases available.
Is Undercast Weather Aether free?
Undercast Weather Aether costs $9.99, with no in-app purchases.
Do WeatherBolt or Undercast Weather Aether have ads?
Neither WeatherBolt nor Undercast Weather Aether shows ads.
Which is updated more often, WeatherBolt or Undercast Weather Aether?
WeatherBolt ships an update every 4 days, and Undercast Weather Aether weekly. Most recently, WeatherBolt was updated on November 5, 2026 and Undercast Weather Aether on November 9, 2026.

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