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Maritime · head to head

FleetMon vs StormGlass

F

FleetMon

Maritime

Track ships and manage fleets worldwide

From
Free
Rated
-
Full reviewWebsite
StormGlass logo

StormGlass

Maritime

Global weather data API for maritime

From
Free
Rated
-
Full reviewWebsite

The short version

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

Attributes where FleetMon and StormGlass differ
AttributeFleetMonStormGlass
PlatformsWeb, Ios, AndroidApi
Founded20072017

Identical on both: starting price (Free), pricing model (freemium), free tier (Yes), 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 FleetMon

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

Only in StormGlass

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

Both cover

  • REST API
  • Webhooks

What people use each for

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

FleetMon

No use cases recorded yet. See the FleetMon review.

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

Where each one falls short

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

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

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

FleetMon

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

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 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

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 FleetMon or StormGlass better?
Neither clearly leads. FleetMon starts at Free and StormGlass at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, FleetMon or StormGlass?
FleetMon starts at Free and StormGlass at Free.
Does FleetMon or StormGlass run on more platforms?
FleetMon runs on Web, Ios, Android. StormGlass runs on Api.
Can I use FleetMon for free?
Both have a free tier, so you can try either at no cost before committing.
What can FleetMon do that StormGlass cannot?
FleetMon covers Global vessel tracking, Fleet management, Port statistics, Voyage tracking. StormGlass covers Marine weather data, Wave forecasts, Tide data, Historical weather. 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
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
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
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
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
StormGlass: Is annual billing available?

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

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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