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Maritime · head to head

Spire Global Maritime vs StormGlass

Spire Global Maritime logo

Spire Global Maritime

Maritime

Satellite-powered maritime data and analytics

From
$500/month
Rated
-
Full reviewWebsite
StormGlass logo

StormGlass

Maritime

Global weather data API for maritime

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only StormGlass has a free tier, so it costs nothing to try first.
  • Each has a real cost: Spire Global Maritime now part of Kpler rather than Spire, and spire.com/maritime redirects into the Kpler site; StormGlass the free tier allows 10 API requests per day and is not licensed for commercial use
  • They diverge on capability: Spire Global Maritime covers Satellite AIS tracking, StormGlass covers Marine weather data.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Spire Global Maritime and StormGlass actually diverge.

Attributes where Spire Global Maritime and StormGlass differ
AttributeSpire Global MaritimeStormGlass
Starting price$500/monthFree
Pricing modelsubscriptionfreemium
Free tierNoYes
PlatformsApi, WebApi
Founded20122017

Identical on both: user rating (Not yet rated), category (Maritime).

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 Spire Global Maritime

  • Satellite AIS tracking
  • Global coverage
  • Predictive analytics
  • Dark vessel detection
  • Streaming API
  • AWS S3
  • Snowflake
  • Web support

Only in StormGlass

  • Marine weather data
  • Wave forecasts
  • Tide data
  • Historical weather
  • Webhooks
  • SDKs

Both cover

  • REST API
  • Api support

What people use each for

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

Spire Global Maritime

  • Satellite and terrestrial AIS vessel trackingnot StormGlass
  • Predicted destinations, ETAs and arrival eventsnot StormGlass
  • Historical AIS going back more than ten yearsnot StormGlass
  • Vessel particulars and ownership lookupsnot StormGlass
  • Sanctions and insurance screening against vessel movementsnot StormGlass

StormGlass

  • Pulling marine weather and sea state forecasts into a vessel routing or planning toolnot Spire Global Maritime
  • Adding tide, wave and wind data to a maritime or coastal applicationnot Spire Global Maritime

Where each one falls short

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

Spire Global Maritime

  • Now part of Kpler rather than Spire, and spire.com/maritime redirects into the Kpler site
  • Pricing is not published
  • Sold as a data feed to be consumed through APIs, Snowflake, NMEA streams or FTP, so it needs engineering work before it is useful

StormGlass

  • The free tier allows 10 API requests per day and is not licensed for commercial use
  • Commercial use and any support at all start at the Medium plan, 49 euros a month
  • The Small plan at 19 euros a month has no support and no commercial licence
  • Request allowances are daily rather than monthly, so a burst of traffic cannot borrow against a quiet week

Pricing, plan by plan

Spire Global Maritime

$500/month
  • Professional$2000/month
    • Low-latency data
    • Behavior analytics
    • Predictive ETAs

StormGlass

Free
  • FreeFree
    • 10 requests per day
    • All weather parameters
    • Not for commercial use
  • Small$19/month
    • 500 requests per day
    • All weather parameters
    • 10% annual discount available
  • Medium$49/month
    • 5000 requests per day
    • All weather parameters
    • Full support
  • Large$129/month
    • 25000 requests per day
    • All weather parameters
    • Full support

Which should you pick?

Choose Spire Global Maritime if

  • You need satellite ais tracking.
  • You work on Api, Web.
  • You also want global coverage.
Spire Global Maritime review

Choose StormGlass if

  • You need marine weather data.
  • You want to start without paying.
  • You work on Api.
  • You also want wave forecasts.
StormGlass review

Questions people ask

Is Spire Global Maritime or StormGlass better?
Neither clearly leads. Spire Global Maritime starts at $500/month and StormGlass at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Spire Global Maritime or StormGlass?
StormGlass has a free tier; the other does not. Paid plans start at $500/month for Spire Global Maritime and Free for StormGlass.
Does Spire Global Maritime or StormGlass run on more platforms?
Spire Global Maritime runs on Api, Web. StormGlass runs on Api.
Can I use StormGlass for free?
Yes. StormGlass has a free tier, so you can try it without paying. Spire Global Maritime starts at $500/month.
What is Spire Global Maritime best used for?
Spire Global Maritime is most often used for satellite and terrestrial ais vessel tracking, predicted destinations, etas and arrival events, historical ais going back more than ten years, vessel particulars and ownership lookups. Of those, satellite and terrestrial ais vessel tracking and predicted destinations, etas and arrival events are not what StormGlass is typically brought in for.
What can Spire Global Maritime do that StormGlass cannot?
Spire Global Maritime covers Satellite AIS tracking, Global coverage, Predictive analytics, Dark vessel detection. StormGlass covers Marine weather data, Wave forecasts, Tide data, Historical weather. Both handle REST API, Api support.

Answered from the vendors’ own pages

Spire Global Maritime: What maritime data does Spire Global provide?

Spire Global maritime services provide satellite-based vessel tracking and monitoring. The platform offers real-time data on ship locations, movements, and maritime activities for commercial and government use.

Source
StormGlass: Is there a free tier available?

Yes, Stormglass offers a free plan with 10 API requests per day, including all weather parameters, but it is not permitted for commercial use.

Source
Spire Global Maritime: How much does Spire Global Maritime cost?

Spire Global does not publish standard pricing for maritime data services. Pricing is determined based on data access level, update frequency, and specific use case. Customers should contact Spire directly for custom quotes.

Source
StormGlass: What does the Medium plan include?

The Medium plan costs 49 EUR per month and includes 5000 daily requests, all weather parameters, and full support for commercial use.

Source
Spire Global Maritime: What industries use Spire's maritime data?

Spire Global maritime data serves shipping companies, maritime insurance, government agencies, and maritime research organizations. The service supports vessel tracking, compliance monitoring, and maritime intelligence operations.

Source
StormGlass: Is annual billing available?

Yes, a 10% discount is available when paying annually on Small, Medium, and Large plans.

Source
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