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Weather · head to head

PurpleAir vs RadarScope

PurpleAir logo

PurpleAir

Weather

Real-time air quality monitoring for communities

From
$229/one-time
Rated
-
Full reviewWebsite
RadarScope logo

RadarScope

Weather

Professional-grade NEXRAD radar for storm chasers

From
$9.99/one-time
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: PurpleAir purpleAir sensors are one-time hardware purchases rather than a subscription, priced $199 to $279 USD per unit for named models (PA-I-Indoor, PA-II, PA-II-SD), per the vendor's own store (archived, 2021).; RadarScope aggressive paywall restricts basic radar features behind $9.99-$109.99 annual subscriptions after initial purchase
  • They diverge on capability: PurpleAir covers PM2.5 monitoring, RadarScope covers NEXRAD Level 2/3.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which PurpleAir and RadarScope actually diverge.

Attributes where PurpleAir and RadarScope differ
AttributePurpleAirRadarScope
Starting price$229/one-time$9.99/one-time
Pricing modelone-timeUnknown
PlatformsWeb, Api, HardwareiOS, Android, Apple Watch, Apple TV
Founded20152010

Identical on both: free tier (No), user rating (Not yet rated), category (Weather).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in PurpleAir

  • PM2.5 monitoring
  • Real-time map
  • Historical data
  • Community network
  • API access
  • API access
  • Home Assistant
  • Data downloads

Only in RadarScope

  • NEXRAD Level 2/3
  • Super-resolution data
  • Dual-polarization
  • Storm tracking
  • Lightning data
  • GPS tracking
  • Apple Watch
  • TV apps

What people use each for

The jobs each tool is most often brought in to do.

PurpleAir

  • Professional Work
  • Content Creation

RadarScope

  • Professional Work
  • Content Creation

Both are used for professional work, content creation, on those jobs the choice comes down to price and fit rather than capability.

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

PurpleAir

  • PurpleAir sensors are one-time hardware purchases rather than a subscription, priced $199 to $279 USD per unit for named models (PA-I-Indoor, PA-II, PA-II-SD), per the vendor's own store (archived, 2021).

RadarScope

  • Aggressive paywall restricts basic radar features behind $9.99-$109.99 annual subscriptions after initial purchase
  • No CarPlay support, limiting usability while driving for storm chasers and weather professionals
  • App requires constant internet connectivity with no offline viewing capability
  • Missing road maps and some geographic areas do not display correctly

Pricing, plan by plan

PurpleAir

$229/one-time
  • Outdoor Sensor$229/one-time
    • PM2.5 monitoring
    • Cloud connectivity
    • Map access
  • Indoor Sensor$199/one-time
    • Indoor monitoring
    • WiFi enabled
    • Real-time data

RadarScope

$9.99/one-time
  • Base App$9.99/one-time
    • Full suite single-site radar products
    • 6-frame radar loops
    • Severe weather warnings
  • Pro Tier 1$9.99/year
    • 30-frame radar loops
    • Real-time lightning data
    • Cloud-to-ground detection
  • Pro Tier 2$109.99/year
    • 50-frame radar loops
    • Satellite imagery (GOES)
    • MRMS products

Which should you pick?

Choose PurpleAir if

  • You need pm2.5 monitoring.
  • You work on Web, Api, Hardware.
  • You also want real-time map.
PurpleAir review

Choose RadarScope if

  • You need nexrad level 2/3.
  • You work on iOS, Android, Apple Watch, Apple TV.
  • You also want super-resolution data.
RadarScope review

Questions people ask

Is PurpleAir or RadarScope better?
Neither clearly leads. PurpleAir starts at $229/one-time and RadarScope at $9.99/one-time, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, PurpleAir or RadarScope?
PurpleAir starts at $229/one-time and RadarScope at $9.99/one-time.
Does PurpleAir or RadarScope run on more platforms?
PurpleAir runs on Web, Api, Hardware. RadarScope runs on iOS, Android, Apple Watch, Apple TV.
What is PurpleAir best used for?
PurpleAir is most often used for professional work, content creation.
What can PurpleAir do that RadarScope cannot?
PurpleAir covers PM2.5 monitoring, Real-time map, Historical data, Community network. RadarScope covers NEXRAD Level 2/3, Super-resolution data, Dual-polarization, Storm tracking.

Answered from the vendors’ own pages

RadarScope: What is the base price for RadarScope?

RadarScope costs $9.99 as a one-time purchase on iOS. This includes full suite radar products, 6-frame loops, severe weather warnings, and access to US, Canada, Guam, Denmark, Finland, and Germany.

Source
RadarScope: What subscription tiers does RadarScope offer?

RadarScope Pro Tier 1 costs $9.99 per year and includes 30-frame loops, real-time lightning, cloud-to-ground data, and dual pane display. Pro Tier 2 adds satellite imagery (GOES), MRMS products, forecast models (GFS, ECMWF, HRRR, NAM), and 30-year NEXRAD archive access.

Source
RadarScope: What platforms does RadarScope support?

RadarScope is available on iOS for iPhone and iPad. It supports Apple Watch and Apple TV widgets and complications. Android version is available via Google Play.

Source
RadarScope: Does RadarScope work offline?

No, RadarScope requires an active internet connection to download and display radar data. The app cannot function offline.

Source
RadarScope: What geographic coverage does RadarScope provide?

RadarScope covers the US, Canada, Guam, Denmark, Finland, and Germany with full suite single-site radar products. Pro Tier 2 provides 30-year NEXRAD archive access for historical analysis.

Source
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