Comparison

Flowx vs Nullschool

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

Head to head
About

Flowx

Visualize weather forecasts with interactive maps and graphs. Compare multiple data models and customize your view for aviation, outdoor activities, or storm tracking. Offers offline use with no ads or tracking.

Highlights
  • Interactive forecast map with swipe control
  • Multiple weather data types and forecast models
  • Detailed weather graphs with comparison function
  • Global and regional forecast models
  • Offline use
  • No ads or tracking
Currently charting
Read full description

Visualize the forecast with the unique Flowx weather map and graphs. Get superior user experience with all your data on one screen, finger swipe control, multiple data types and forecast models, and absolutely no ads, no tracking. Use Flowx to plan around the weather, for aviation, fishing, sailing, surfing, cycling, hiking, photography, storm tracking or anyone interested in the weather. The advantage of Flowx is the ability to easily compare models to understand the weather and what it means for you. Customize your data options and visuals to your preference. User Experience ============ Map Use finger swipe to control the forecast animation over time. Choose multiple data layers to display on the map, and easily switch between models. Graphs View the week’s weather forecast data at a glance. Choose from a selection of graphs and use the compare function to view all data sources at once. Features GFS, GDPS and ECMWF global forecast models, updated 4 times daily. Plus global waves, air quality and UV index models, ocean data, storm/hurricane tracks, sun/moon-rise/set and USA high-res smoke. Offline use, no ads, no tracking, minimal permissions. Pro Version ======== Gold Subscription includes: • Additional global models and high-resolution data for North America, South America & Europe • Up to 16-day forecast and 3-day history • Radar Reflectivity for USA - NOAA NAM & HRRR • Graph Editor and other customization options Note: payment is required to access pro version subscription features. Data Sources ========== Free Data Sources: • NOAA GFS and Waves - Global • CMC GDPS and GDWPS Waves - Global • ECMWF IFS 25km - Global • NOAA HRRR Smoke Data - Continental USA • NOAA RTOFS Ocean Model - Global • CAMS Air Quality/UV Index - Global • Storm/Hurricane Tracks (NOAA & CMC) - Global tropical storms • Sunrise/set and Moonrise/set Pro Data Sources: • Free sources plus • DWD ICON - Global • ECMWF AIFS - Global • UKMO 10km - Global • UKMO 2km - UK, Ireland • NOAA NAM 3km, NAM12km & HRRR - Continental USA • NOAA RRFS - 3km Continental USA + Alaska, 2.5km Hawaii + Puerto Rico, 13km Nth America • CMC RDPS - Canada, USA (incl. Alaska), Greenland, Iceland • CMC HRDPS - Canada • DWD ICON-EU - Europe • DWD ICON-D2 - Germany • SMN WRF 4km - Argentina, Chile, Uruguay, Paraguay • MeteoFrance ARPEGE - Europe • MeteoFrance AROME - France • KNMI HARMONIE 2km - Netherlands+ • RMI Alaro - Belgium • Expedition Marine - Various locations incl NZ • CAMS-EU Air Quality - Europe • SILAM Air Quality - Europe Contact: ====== Join us at forum.flowx.io to ask questions and discuss ideas. Follow us on social media: Facebook: www.facebook.com/flowxapp X: www.x.com/flowxapp YouTube: www.youtube.com/flowxapp Terms of Use: www.apple.com/legal/internet-services/itunes/dev/stdeula

About

Nullschool

Visualize global weather, ocean, and pollution data on an interactive map. Explore current conditions, forecasts up to 5 days, and historical data. Discover atmospheric phenomena like hurricanes, jet streams, and pollution spread.

Highlights
  • Interactive animated global map
  • Wind, ocean, and pollution layers
  • Current conditions and 5-day forecasts
  • Historical data access
  • Aurora and wildfire tracking
  • Subscription for extra features
Features
Read full description

The official app of the popular website earth.nullschool.net! Explore wind, weather, ocean, and pollution conditions, as forecast by supercomputers, on an interactive animated map. Numerous features are available: - Current conditions, forecasts up to 5 days (depending on the data source), and historical data going back many years - Physical layers: wind, temperature, relative humidity, wet bulb temperature, precipitation, MSLP, CAPE, and more - Chemistry and aerosol layers: PM 2.5, CO2, sulfate, and other pollutants - Ocean layers: waves, currents, swells, sea surface temps, coral bleaching - Aurora - Wildfires Explore Earth's atmosphere and oceans wherever your curiosity takes you: - Watch how hurricanes and typhoons form and pull heat from the ocean - See the jet stream and polar vortex - Follow the Kuroshio, Alguhas, and Gulf Stream - Learn how pollution spreads across the globe This app offers paid subscriptions so you can help Nullschool keep the lights on and develop new features. Plus, you get some neat extras: - Curate a gallery of favorites - Save and share screenshots - Generate QR codes for easy linking Who knows what you're going to find?

Screenshots

Flowx4 screens
Nullschool4 screens

Verdict

The call

The clearest difference is chart position: Nullschool at #61 against Flowx's #197. On price, rating, review sentiment and ratings volume 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. Flowx sells 1 in-app purchase, starting at $24.99 per year and Nullschool sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for Flowx against 5.0 for Nullschool. Both are backed by a comparable volume of ratings — 50 and 27 respectively. Written reviews are what separate them: 96% of Flowx's written reviews are positive against 100% of Nullschool's.

UpkeepUpdate frequency

Flowx ships an update every 3 weeks, Nullschool monthly. The most recent releases landed on September 24, 2026 and September 28, 2026 respectively.

Scorecard1 real difference · 10 level
Flowx versus Nullschool: the parameters behind the verdict, then further details
ParameterFlowxNullschool
PriceFreeFree
Rating4.9 (50 ratings)5.0 (27 ratings) — better
Positive reviews96.0% of reviews100.0% of reviews — better
Number of ratings50 — better27
Update frequencyEvery 3 weeks — betterMonthly
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
Best chart rank#197#61 — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.015.1 — better
Further details — not scored
Size73 MB31 MB
Age rating4+4+
DeveloperDuane MalcolmNullschool Technologies Inc.

Customer experience

Flowx

All ratings50 ratings
Positive98.0%
Neutral2.0%
Negative0.0%
Written reviews25 reviews
Positive96.0%
Neutral0.0%
Negative4.0%

Nullschool

All ratings27 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews17 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Flowx

Subscriptions1
  • Gold Pro Level14 Days trial$24.991 Year
3 purchases

Nullschool

Subscriptions3
  • Monthly Plan$2.991 Month
  • Annual Plan$29.991 Year
  • Friends of Nullschool$49.991 Year

Questions

Is Flowx free?
Flowx is free to download, with in-app purchases available.
Is Nullschool free?
Nullschool is free to download, with in-app purchases available.
Which has better reviews, Flowx or Nullschool?
Nullschool is rated higher. Flowx averages 4.9 out of 5 from 50 ratings, while Nullschool averages 5.0 from 27 ratings.
Do Flowx or Nullschool have ads?
Neither Flowx nor Nullschool shows ads.
Which is updated more often, Flowx or Nullschool?
Flowx ships an update every 3 weeks, and Nullschool monthly. Most recently, Flowx was updated on September 24, 2026 and Nullschool on September 28, 2026.
Which is more popular, Flowx or Nullschool?
Flowx currently peaks at #197 in the App Store charts, and Nullschool at #61. Chart position reflects recent download velocity rather than total install base.

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