Softwr

Maps · head to head

Fused vs Transit

Fused logo

Fused

Maps

Serverless Python for geospatial: write a UDF, get a map tile endpoint and an HTTP API

From
Free
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

  • Each has a real cost: Fused the price steps are brutal: $20 to $200 to $2,000 a month with no intermediate tier, so a two-person team that outgrows Starter faces a tenfold increase for what is often a modest capacity gap.; 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: Fused covers User defined functions, Transit covers Real-time arrivals.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Fused and Transit actually diverge.

Attributes where Fused and Transit differ
AttributeFusedTransit
Pricing modelPer month by compute tierFree to riders; revenue from agency data and fare-payment transaction fees
PlatformsWeb, Linux, macOS, WindowsiOS, Android, Web

Identical on both: starting price (Free), free tier (Yes), 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 Fused

  • User defined functions
  • Instant tile endpoints
  • HTTP API
  • Caching
  • Workbench
  • Data stack connectors
  • Public UDF catalogue
  • Local execution

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.

Fused

  • A data team that wants to publish a dynamic layer computed from a large Parquet dataset without standing up and operating a tile servernot Transit
  • An analyst prototyping against Overture, Sentinel or Census data who needs a working map in an afternoon rather than a data engineering ticketnot Transit
  • An application that needs a geospatial computation exposed as an HTTP endpoint, where the alternative is a container, a queue and an on-call rotanot Transit
  • A consultancy delivering an interactive constraint or suitability map to a client, computed live from source data rather than pre-baked into static tilesnot Transit

Transit

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

Where each one falls short

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

Fused

  • The price steps are brutal: $20 to $200 to $2,000 a month with no intermediate tier, so a two-person team that outgrows Starter faces a tenfold increase for what is often a modest capacity gap.
  • Published tiers do not state the actual compute, storage or request allowances, so the only way to know whether $200 covers your workload is to run it and find out.
  • Fused is at pre-seed stage with a small team, and putting a customer-facing map behind a startup’s serverless platform is a continuity risk that a procurement review will flag.
  • It is Python-only and assumes competence with cloud-native geospatial formats; there is no path for an analyst who works in a desktop GIS and not in code.
  • Serverless execution means cold starts and per-tile latency on uncached views, so a first load of a heavy UDF over a wide area is noticeably slower than a pre-rendered tile set.

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

Fused

Free
  • FreeFree
    • Workbench access
    • AI assistant
    • Local UDF runs
  • Starter$20/month
    • Secrets management
    • Higher compute limits
    • Office hours support
  • Developer$200/month
    • Dedicated jobs
    • GitHub integration
    • Expanded compute, storage and AI token allowance
  • Professional$2000/month
    • Team collaboration
    • Dedicated training
    • Substantially increased usage limits

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 Fused if

  • You need user defined functions.
  • You want to start without paying.
  • You work on Web, Linux, macOS, Windows.
  • You also want instant tile endpoints.
Fused 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 Fused or Transit better?
Neither clearly leads. Fused starts at Free and Transit at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Fused or Transit?
Fused starts at Free and Transit at Free.
Does Fused or Transit run on more platforms?
Fused runs on Web, Linux, macOS, Windows. Transit runs on iOS, Android, Web.
Can I use Fused for free?
Both have a free tier, so you can try either at no cost before committing.
What is Fused best used for?
Fused is most often used for a data team that wants to publish a dynamic layer computed from a large parquet dataset without standing up and operating a tile server, an analyst prototyping against overture, sentinel or census data who needs a working map in an afternoon rather than a data engineering ticket, an application that needs a geospatial computation exposed as an http endpoint, where the alternative is a container, a queue and an on-call rota, a consultancy delivering an interactive constraint or suitability map to a client, computed live from source data rather than pre-baked into static tiles. Of those, a data team that wants to publish a dynamic layer computed from a large parquet dataset without standing up and operating a tile server and an analyst prototyping against overture, sentinel or census data who needs a working map in an afternoon rather than a data engineering ticket are not what Transit is typically brought in for.
What can Fused do that Transit cannot?
Fused covers User defined functions, Instant tile endpoints, HTTP API, Caching. Transit covers Real-time arrivals, Multi-modal trip planning, Service alerts, In-app fare payment.

Answered from the vendors’ own pages

Fused: What does Fused actually give me?

A Python function becomes a map tile endpoint and an HTTP API on managed infrastructure, with caching, without you running a server.

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.

Fused: How much does it cost?

Free, then $20, $200 and $2,000 per month for Starter, Developer and Professional. Usage allowances are not itemised publicly.

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.

Fused: Can I run UDFs locally?

Yes, through the Python SDK, which is how most development is done before deploying.

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.

Fused: Does it replace PostGIS or BigQuery?

No. It reads from them. Fused is the compute and serving layer, not the store.

Fused: Is it a mature company?

No. It is a small pre-seed San Francisco company. The technology is real; the vendor risk is real too.

Share

Related pages

More on Fused

More on Transit

Keep looking

Other head to heads