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Maritime · head to head

Harbour Assist vs StormGlass

Harbour Assist logo

Harbour Assist

Maritime

Marina, harbour and boatyard management software for United Kingdom and European operators

From
On request
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: Harbour Assist no pricing is published, and the mandatory setup and data migration fee means the first-year cost is materially above the recurring subscription, which is easy to miss when budgeting.; StormGlass the free tier allows 10 API requests per day and is not licensed for commercial use
  • They diverge on capability: Harbour Assist covers Berth and mooring management, StormGlass covers Marine weather data.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Harbour Assist and StormGlass actually diverge.

Attributes where Harbour Assist and StormGlass differ
AttributeHarbour AssistStormGlass
Starting priceOn requestFree
Pricing modelquotefreemium
Free tierNoYes
PlatformsWeb, iOS, AndroidApi
FoundedUnknown2017

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 Harbour Assist

  • Berth and mooring management
  • Contracts and licences
  • Recurring invoicing
  • Customer portal
  • Boatyard work orders
  • Team tasking
  • Online reservations
  • Reporting

Only in StormGlass

  • Marine weather data
  • Wave forecasts
  • Tide data
  • Historical weather
  • REST API
  • Webhooks
  • SDKs
  • Api support

What people use each for

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

Harbour Assist

  • A trust port managing several hundred moorings with annual licence renewals and arrears chasingnot StormGlass
  • A sailing club combining membership, berthing and bar accounts under one customer recordnot StormGlass
  • A boatyard scheduling lifts and winter storage alongside berth contractsnot StormGlass
  • A harbour office cutting phone traffic by moving invoice payment and service requests to a customer portalnot StormGlass

StormGlass

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

Where each one falls short

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

Harbour Assist

  • No pricing is published, and the mandatory setup and data migration fee means the first-year cost is materially above the recurring subscription, which is easy to miss when budgeting.
  • The vendor explicitly does not discount, so a small harbour has no negotiating room even when the entry point is a stretch for its budget.
  • Ownership by ClearCourse, a private-equity-backed consolidator of vertical software, brings the pricing and roadmap risks that come with that model, and buyers should ask about uplift terms before committing.
  • It is built for United Kingdom and Irish harbour practice, so an operator elsewhere gets a system full of concepts that do not match local regulation.
  • There is no marketplace or booking demand attached, so unlike Dockwa it fills no berths for you; visitor income still depends on your own marketing.

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

Harbour Assist

On request
  • Harbour Assist$undefined/month
    • Quoted by size and complexity of the operation
    • Directory listings place the entry point near GBP 400 per month
    • Mandatory setup and installation fee covering customisation, data migration and training

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 Harbour Assist if

  • You need berth and mooring management.
  • You work on Web, iOS, Android.
  • You also want contracts and licences.
Harbour Assist 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 Harbour Assist or StormGlass better?
Neither clearly leads. Harbour Assist starts at On request and StormGlass at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Harbour Assist or StormGlass?
StormGlass has a free tier; the other does not. Paid plans start at On request for Harbour Assist and Free for StormGlass.
Does Harbour Assist or StormGlass run on more platforms?
Harbour Assist runs on Web, iOS, Android. StormGlass runs on Api.
Can I use StormGlass for free?
Yes. StormGlass has a free tier, so you can try it without paying. Harbour Assist starts at On request.
What is Harbour Assist best used for?
Harbour Assist is most often used for a trust port managing several hundred moorings with annual licence renewals and arrears chasing, a sailing club combining membership, berthing and bar accounts under one customer record, a boatyard scheduling lifts and winter storage alongside berth contracts, a harbour office cutting phone traffic by moving invoice payment and service requests to a customer portal. Of those, a trust port managing several hundred moorings with annual licence renewals and arrears chasing and a sailing club combining membership, berthing and bar accounts under one customer record are not what StormGlass is typically brought in for.
What can Harbour Assist do that StormGlass cannot?
Harbour Assist covers Berth and mooring management, Contracts and licences, Recurring invoicing, Customer portal. StormGlass covers Marine weather data, Wave forecasts, Tide data, Historical weather.

Answered from the vendors’ own pages

Harbour Assist: How much does Harbour Assist cost?

It is quoted by size and complexity. Directory listings put the entry point near 400 pounds a month, and every client also pays a setup fee for customisation, migration and training.

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
Harbour Assist: Does it bring visitor bookings?

No. It takes online visitor reservations through your own website but has no consumer marketplace, so demand generation remains your responsibility.

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
Harbour Assist: Who owns it?

ClearCourse, a private-equity-backed group that acquires vertical software businesses in the United Kingdom.

StormGlass: Is annual billing available?

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

Source
Harbour Assist: Does it handle swinging moorings and drying berths?

Yes, and that is one of the reasons British harbours choose it over marina software designed around American pontoon dockage.

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