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Maritime & Shipping · head to head

StormGlass vs FleetMon

S

StormGlass

Maritime & Shipping

Global weather data API for maritime

From
Free
Rated
-
Full reviewWebsite
F

FleetMon

Maritime & Shipping

Track ships and manage fleets worldwide

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: StormGlass the free tier allows 10 API requests per day and is not licensed for commercial use; FleetMon service discontinued in January 2024 and fully phased out with transition to MarineTraffic
  • They diverge on capability: StormGlass covers Marine weather data, FleetMon covers Global vessel tracking.

Where they differ

Only the attributes on which StormGlass and FleetMon actually diverge.

Attributes where StormGlass and FleetMon differ
AttributeStormGlassFleetMon
PlatformsApiWeb, Ios, Android
Founded20172007

Identical on both: starting price (Free), pricing model (freemium), free tier (Yes), user rating (Not yet rated), category (Maritime & Shipping).

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 StormGlass

  • Marine weather data
  • Wave forecasts
  • Tide data
  • Historical weather
  • SDKs
  • Api support

Only in FleetMon

  • Global vessel tracking
  • Fleet management
  • Port statistics
  • Voyage tracking
  • Data exports
  • Web support
  • Ios support
  • Android support

Both cover

  • REST API
  • Webhooks

What people use each for

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

StormGlass

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

FleetMon

No use cases recorded yet. See the FleetMon review.

Where each one falls short

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

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

FleetMon

  • Service discontinued in January 2024 and fully phased out with transition to MarineTraffic
  • Free tier coverage was limited compared to premium plans requiring subscription fees
  • Data gaps in regions with poor terrestrial AIS infrastructure before satellite coverage was added

Pricing, plan by plan

StormGlass

Free
  • Professional$149/month
    • 50,000 API calls
    • Historical data
    • Premium support

FleetMon

Free
  • Professional$19/month
    • Unlimited fleet tracking
    • API access
    • Historical data

Which should you pick?

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

Choose FleetMon if

  • You need global vessel tracking.
  • You want to start without paying.
  • You work on Web, Ios, Android.
  • You also want fleet management.
FleetMon review

Questions people ask

Is StormGlass or FleetMon better?
Neither clearly leads. StormGlass starts at Free and FleetMon at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, StormGlass or FleetMon?
StormGlass starts at Free and FleetMon at Free.
Does StormGlass or FleetMon run on more platforms?
StormGlass runs on Api. FleetMon runs on Web, Ios, Android.
Can I use StormGlass for free?
Both have a free tier, so you can try either at no cost before committing.
What is StormGlass best used for?
StormGlass is most often used for pulling marine weather and sea state forecasts into a vessel routing or planning tool, adding tide, wave and wind data to a maritime or coastal application. Of those, pulling marine weather and sea state forecasts into a vessel routing or planning tool and adding tide, wave and wind data to a maritime or coastal application are not what FleetMon is typically brought in for.
What can StormGlass do that FleetMon cannot?
StormGlass covers Marine weather data, Wave forecasts, Tide data, Historical weather. FleetMon covers Global vessel tracking, Fleet management, Port statistics, Voyage tracking. Both handle REST API, Webhooks.

Answered from the vendors’ own pages

FleetMon: Does FleetMon work globally?

FleetMon had access to positions from both terrestrial AIS receiver stations and satellite AIS through partnership with exactEarth, providing undelayed signals from its network combined with global space-based tracking.

Source
FleetMon: What happened to FleetMon after 2024?

FleetMon was phased out from January 2024 as part of its integration into MarineTraffic following Kpler's acquisition of both platforms in March 2023. The FleetMon brand no longer accepts new registrations or offers new services.

Source
FleetMon: Could you track individual vessels in real-time with FleetMon?

Yes, FleetMon Explorer provided live AIS vessel tracking with filtering by vessel class, flag, length, speed, navigational status and signal age, enabling real-time monitoring of individual ships from a global overview to single vessel level.

Source
FleetMon: What was the starting price for FleetMon Explorer?

FleetMon Explorer pricing started at €54 per month, with subscription plans offering varying levels of access including free basic plans and paid tiers with additional features like historical tracking up to three years back.

Source
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