Comparison

iWeatherMap vs Stormlo

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

Head to head
About

iWeatherMap

Access past, present, and future weather forecasts globally with an intuitive map interface. Pinpoint specific locations and times for detailed predictions, with options for unit systems and data export.

Highlights
  • Past, present, and future weather forecasting
  • Interactive world map with custom location search
  • Date and time picker for specific forecasting
  • Imperial and Metric unit system options
  • View raw weather station data
  • Export forecasts via email and Dropbox
Features
Read full description

Hassle free, past and present weather forecasting with accurate short-term and longterm future predictions, anywhere in the world. The simple to use UI comes into it's own when choosing a geographical location within a specific point in time, making it ideal for a variety of forecasting requirements. • Simple to follow graphical weather dashboard • Easy to use world map with custom or auto locate feature • Date and time picker for past, present and future forecasting • Choose between Imperial and Metric system • Switch between Mph and Mps, regardless of selected unit type • Retrieve location information from current co-ordinates • Custom location search bar • View raw weather station data • Copy to clipboard, location information and raw weather station data • Export forecasts via email and dropbox • Granular Data Sample data available to download from the support website. iWeatherMap may take a short while to initialise when launching for the first time. In order to use the GPS feature, the app must first be authorised to use the location service. This can be enabled in (Settings/Privacy/Location Services/iWeatherMap). Real-time mapping and forecasting is subject to mobile broadband coverage and speed. Your operator may charge you for 3G/4G/5G data usage. The continued use of GPS running in the background can dramatically decrease battery life.

About

Stormlo

Get detailed weather forecasts, including current conditions, hourly breakdowns, and a scrubbable rain radar. Compare multiple meteorological models and receive severe weather alerts. Customize units and access advanced features through an optional subscription.

Highlights
  • Current conditions and hourly forecasts
  • Scrubbable rain radar with playback
  • Multi-model forecast comparison
  • Severe weather alerts
  • Customizable units
  • Sunrise/sunset and pressure data
Features
Read full description

Stormlo gives you the weather you actually need — clean current conditions, a scrubbable rain radar, deep meteograms, and serious meteorological depth one tap away. Today • Current temperature, feels-like, and conditions • Hourly strip for the next 24 hours • 7-day outlook with rain probability, max/min, and UV • Sunrise / sunset / pressure / humidity / wind Radar • High-resolution rain radar with smooth scrubbable playback • Past 2 hours plus short-term forecast frames • Global coverage via RainViewer Forecast • Hourly meteogram: temperature, precipitation probability, wind • Day-by-day breakdown with precipitation totals, UV, wind • Multi-model comparison: stack ECMWF, GFS, ICON, UKMO, MeteoFrance and JMA on a single chart — see which models agree Alerts • Live severe-weather alerts via the US National Weather Service • Clear "all clear" state when nothing's active for your area • Pull to refresh, tap for full alert detail Settings • Choose your units: Celsius/Fahrenheit, km/h/mph/m/s/knots, hPa/inHg/mbar • Open the supporting site, privacy policy, terms, and support Sources • Forecast: Open-Meteo (multi-model, free, global) • Radar: RainViewer (global composite) • Alerts: US NWS Stormlo Pro The core app is free. Stormlo Pro is an optional auto-renewable subscription: • Stormlo Pro (Monthly) — billed every 1 month • Stormlo Pro (Yearly) — billed every 1 year Prices are shown in the app before you purchase. Payment is charged to your Apple Account at confirmation of purchase. The subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period; your account is charged for renewal within 24 hours prior to the end of the period. You can manage or cancel your subscription any time in your Apple Account settings. Terms of Use (EULA): https://app.maddisys.co.uk/terms Privacy Policy: https://app.maddisys.co.uk/privacy No ads. No tracking SDKs.

Screenshots

iWeatherMap4 screens
Stormlo4 screens

Verdict

The call

The clearest difference is in-app purchases: iWeatherMap at none against Stormlo's 2. iWeatherMap also leads on iOS requirement (8.0 vs 17.0). Stormlo's advantage is update cadence (weekly vs every 2 weeks). On price, review sentiment, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Stormlo sells 2 in-app purchases, starting at $4.99 per month. iWeatherMap asks for nothing beyond the download.

UpkeepUpdate frequency

iWeatherMap ships an update every 2 weeks, Stormlo weekly. The most recent releases landed on October 24, 2026 and October 23, 2026 respectively.

Scorecard4 real differences · 4 level
iWeatherMap versus Stormlo: the parameters behind the verdict, then further details
ParameteriWeatherMapStormlo
PriceFreeFree
Positive reviews100.0% of reviews100.0% of reviews
Update frequencyEvery 2 weeksWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPad, iPod — betteriPhone, Apple Watch
Requires iOS8.0 — better17.0
Further details — not scored
Size24 MB8 MB
Age rating4+4+
DeveloperZonk TechnologyMaddisys Limited

Customer experience

iWeatherMap

Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Stormlo

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

iWeatherMap

No in-app purchases

2 purchases

Stormlo

Subscriptions2
  • Stormlo Pro Monthly7 Days trial$4.991 Month
  • Stormlo Pro Yearly7 Days trial$29.991 Year

Questions

Is iWeatherMap free?
iWeatherMap is free to download, with no in-app purchases.
Is Stormlo free?
Stormlo is free to download, with in-app purchases available.
Do iWeatherMap or Stormlo have ads?
Neither iWeatherMap nor Stormlo shows ads.
Which is updated more often, iWeatherMap or Stormlo?
iWeatherMap ships an update every 2 weeks, and Stormlo weekly. Most recently, iWeatherMap was updated on October 24, 2026 and Stormlo on October 23, 2026.

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