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Maps · head to head

Correlator3D vs Transit

Correlator3D logo

Correlator3D

Maps

SimActive photogrammetry with a published price list and a perpetual licence still on sale

From
$295/month
Rated
-
Full reviewWebsite
Transit logo

Transit

Maps

Public transit trip planning and real-time arrivals for buses, trains and shared bikes and scooters

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Transit has a free tier, so it costs nothing to try first.
  • Each has a real cost: Correlator3D the standard licence caps at 61 megapixel sensors, so an operator moving to a medium or large format camera has to buy a different and separately quoted licence rather than paying an upgrade fee.; Transit coverage depends entirely on whether the local transit agency publishes a real-time feed, so quality swings sharply between well-funded metro systems and smaller regional operators.
  • They diverge on capability: Correlator3D covers Aerial triangulation, Transit covers Real-time arrivals.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Correlator3D and Transit actually diverge.

Attributes where Correlator3D and Transit differ
AttributeCorrelator3DTransit
Starting price$295/monthFree
Pricing modelOne-time purchaseFree to riders; revenue from agency data and fare-payment transaction fees
Free tierNoYes
PlatformsWindowsiOS, Android, Web

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

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 Correlator3D

  • Aerial triangulation
  • DSM and DTM generation
  • Orthomosaic production
  • Point cloud and 3D mesh output
  • Feature extraction
  • GPU acceleration
  • Satellite imagery support
  • Batch and unattended processing

Only in Transit

  • Real-time arrivals
  • Multi-modal trip planning
  • Service alerts
  • In-app fare payment
  • Offline schedules
  • GO transit and micromobility layers

What people use each for

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

Correlator3D

  • An aerial survey company processing large photographic blocks where per-project cloud credits would be more expensive than owning a licencenot Transit
  • A national or regional mapping agency that needs software it can run offline on classified or restricted imagerynot Transit
  • A drone service provider producing bare-earth terrain models for volumetrics and corridor mapping at high throughputnot Transit
  • An organisation that wants a perpetual licence because a multi-year subscription cannot be justified against its capital budgeting rulesnot Transit

Transit

  • A commuter in a city with a well-maintained GTFS-realtime feed wanting live bus and train arrivalsnot Correlator3D
  • A rider comparing a transit trip against a bike share or scooter leg for the last milenot Correlator3D
  • A visitor needing offline-capable static schedules in a city with patchy data coveragenot Correlator3D
  • Someone wanting to buy a transit fare inside the same app used to plan the trip, in supported citiesnot Correlator3D

Where each one falls short

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

Correlator3D

  • The standard licence caps at 61 megapixel sensors, so an operator moving to a medium or large format camera has to buy a different and separately quoted licence rather than paying an upgrade fee.
  • It is Windows desktop only with no cloud processing option, so throughput is bounded by the workstation and GPU you buy, and there is no way to burst capacity for one large job.
  • There is no collaboration layer, client portal or field application, so deliverable sharing, review and version control all have to be handled by other software.
  • The interface and workflow are built for photogrammetry specialists; an occasional drone operator will find the learning curve steeper than a consumer-oriented mapping package.
  • The perpetual licence includes only one year of support and updates, and staying current afterwards means paying maintenance, so the headline $5,900 is not the whole long-term cost.

Transit

  • Coverage depends entirely on whether the local transit agency publishes a real-time feed, so quality swings sharply between well-funded metro systems and smaller regional operators.
  • The company earns its revenue by selling agencies a paid analytics product built from rider trip data, which means the free app functions partly as a data-collection layer for a business customer, not only as a public service.
  • In-app fare payment is only available in a limited set of cities, so the headline feature is not something most riders can actually use.
  • Static schedule fallback in low-data cities is only as accurate as the agency last published, and service changes can go unreflected for weeks.
  • The app has no offline routing without a cached area, so it is not reliable for navigation in areas with poor mobile signal.

Pricing, plan by plan

Correlator3D

$295/month
  • Monthly subscription$295/month
    • Unlimited images
    • Sensors up to 61 megapixels
    • All modules and tools
  • Yearly subscription$2950/year
    • Unlimited images
    • Sensors up to 61 megapixels
    • All modules and tools
  • Permanent licence$5900/one-time
    • Perpetual licence
    • Unlimited images up to 61 megapixels
    • All modules and tools
  • Permanent floating licence$6400/one-time
    • Perpetual floating licence shared across machines
    • Unlimited images up to 61 megapixels
    • One year of support and updates included

Transit

Free
  • Rider appFree
    • Real-time arrivals and trip planning
    • No ads shown to riders
    • In-app fare purchase where supported

Which should you pick?

Choose Correlator3D if

  • You need aerial triangulation.
  • You work on Windows.
  • You also want dsm and dtm generation.
Correlator3D review

Choose Transit if

  • You need real-time arrivals.
  • You want to start without paying.
  • You work on iOS, Android, Web.
  • You also want multi-modal trip planning.
Transit review

Questions people ask

Is Correlator3D or Transit better?
Neither clearly leads. Correlator3D starts at $295/month and Transit at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Correlator3D or Transit?
Transit has a free tier; the other does not. Paid plans start at $295/month for Correlator3D and Free for Transit.
Does Correlator3D or Transit run on more platforms?
Correlator3D runs on Windows. Transit runs on iOS, Android, Web.
Can I use Transit for free?
Yes. Transit has a free tier, so you can try it without paying. Correlator3D starts at $295/month.
What is Correlator3D best used for?
Correlator3D is most often used for an aerial survey company processing large photographic blocks where per-project cloud credits would be more expensive than owning a licence, a national or regional mapping agency that needs software it can run offline on classified or restricted imagery, a drone service provider producing bare-earth terrain models for volumetrics and corridor mapping at high throughput, an organisation that wants a perpetual licence because a multi-year subscription cannot be justified against its capital budgeting rules. Of those, an aerial survey company processing large photographic blocks where per-project cloud credits would be more expensive than owning a licence and a national or regional mapping agency that needs software it can run offline on classified or restricted imagery are not what Transit is typically brought in for.
What can Correlator3D do that Transit cannot?
Correlator3D covers Aerial triangulation, DSM and DTM generation, Orthomosaic production, Point cloud and 3D mesh output. Transit covers Real-time arrivals, Multi-modal trip planning, Service alerts, In-app fare payment.

Answered from the vendors’ own pages

Correlator3D: Can I still buy a perpetual licence?

Yes. $5,900 for a permanent licence and $6,400 for a permanent floating licence, each including a year of support and updates.

Transit: Does Transit cost anything to use?

No. The rider app is free with no subscription and no ads; the company earns money separately by selling agencies a paid data and communication platform.

Correlator3D: What limits the standard licence?

Sensor resolution, up to 61 megapixels. Medium format, large format and satellite imagery need separately priced licences.

Transit: Does it work in every city?

No. Coverage depends on whether the local transit agency publishes a GTFS or GTFS-realtime feed; some smaller markets have static schedules only.

Correlator3D: Is there a cloud version?

No. Processing runs on your own Windows workstation. SimActive offers a data processing service as an alternative to buying the software.

Transit: Can I buy a bus or train ticket in the app?

Only in cities where the local agency has integrated fare payment; elsewhere you still need the agency app or a physical ticket.

Correlator3D: Does it handle satellite imagery?

Yes, under a separate satellite licence class quoted on request.

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