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Manufacturing · head to head

Flow Software vs Formlabs PreForm

Flow Software logo

Flow Software

Manufacturing

Manufacturing KPI and OEE calculation engine with published list prices, licensed by measure count

From
$11390/one-time
Rated
-
Full reviewWebsite
Formlabs PreForm logo

Formlabs PreForm

Manufacturing

Free print preparation software that only drives Formlabs printers, because the money is in hardware and resin

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Formlabs PreForm has a free tier, so it costs nothing to try first.
  • Each has a real cost: Flow Software the 11,390 dollar Starter licence caps at 250 measures and events, which a multi-line plant exhausts quickly once each line contributes a dozen calculations, forcing a jump to the 62,230 dollar tier.; Formlabs PreForm preForm only drives Formlabs printers, so the free software is really an entry cost to a closed hardware and resin ecosystem rather than a tool you can keep if you change machines.
  • They diverge on capability: Flow Software covers Calculation engine, Formlabs PreForm covers Automatic orientation.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Flow Software and Formlabs PreForm actually diverge.

Attributes where Flow Software and Formlabs PreForm differ
AttributeFlow SoftwareFormlabs PreForm
Starting price$11390/one-timeFree
Pricing modelOne-time purchaseFree with a Formlabs printer
Free tierNoYes
PlatformsWindows, WebWindows, macOS

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

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 Flow Software

  • Calculation engine
  • Measure model
  • Historian connectors
  • Manual data entry
  • Event framing
  • Excel and Power BI output
  • Flow dashboards
  • AI Gateway

Only in Formlabs PreForm

  • Automatic orientation
  • Support generation
  • One-click print
  • Material presets
  • Dashboard
  • Fleet Control

What people use each for

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

Flow Software

  • A brewery replacing a fragile network of OEE spreadsheets with governed calculations from the same historian datanot Formlabs PreForm
  • Reporting specific energy consumption per tonne against an ISO 50001 audit where the calculation method must be documentednot Formlabs PreForm
  • Feeding Power BI plant dashboards from a historian without giving analysts direct tag-level accessnot Formlabs PreForm
  • A site that needs lab results typed in and combined with automated tag data in the same yield calculationnot Formlabs PreForm

Formlabs PreForm

  • A dental laboratory preparing surgical guides on a validated resin and printer combinationnot Flow Software
  • A prototyping team running several Form printers that needs job queueing and usage trackingnot Flow Software
  • A jewellery workshop laying out castable patterns to maximise parts per buildnot Flow Software
  • An education lab that needs software with no per-student licence costnot Flow Software

Where each one falls short

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

Flow Software

  • The 11,390 dollar Starter licence caps at 250 measures and events, which a multi-line plant exhausts quickly once each line contributes a dozen calculations, forcing a jump to the 62,230 dollar tier.
  • The Unlimited licence requires every engine on a single server or VM, so any multi-server or multi-site topology goes straight to Distributed at roughly double the price with no intermediate option.
  • Maintenance renews at about fifteen percent of the installed base annually, so a large perpetual estate carries a five-figure recurring cost that the headline perpetual price hides.
  • It is a Windows product with a Microsoft data stack, so Linux or container-native deployment strategies do not apply and the server has to be managed on the plant Windows estate.
  • It calculates and reports but does not collect from equipment itself, so an existing historian or OPC layer is a prerequisite and Flow adds cost on top of that rather than replacing it.

Formlabs PreForm

  • PreForm only drives Formlabs printers, so the free software is really an entry cost to a closed hardware and resin ecosystem rather than a tool you can keep if you change machines.
  • Formlabs resin is sold in proprietary cartridges, and the ongoing consumable cost over a printer's life dwarfs anything a paid slicer would have charged.
  • Third-party resins can be used only through open material settings that step outside validated profiles, which affects print reliability and the comfort of warranty support.
  • Parameter-level control is deliberately limited compared with open slicers, so advanced users cannot tune exposure and layer behaviour the way they can on an open platform.
  • It is Windows and macOS only with no Linux build, which is awkward for research groups and labs standardised on Linux workstations.

Pricing, plan by plan

Flow Software

$11390/one-time
  • Starter$11390/one-time
    • 250 KPI measures and events
    • Single server deployment
    • First year of software maintenance included
  • Unlimited$62230/one-time
    • Unlimited KPI measures and events
    • All engines must run on one server or dedicated VM
    • First year of maintenance included
  • Distributed$128450/one-time
    • Unlimited measures with engines distributed across multiple servers
    • Required for multi-server and multi-site deployments
    • Available as an annual subscription at 34,250 USD instead

Formlabs PreForm

Free
  • PreFormFree
    • Free download with no licence fee or subscription
    • No installation or seat limit
    • Works only with Formlabs printers

Which should you pick?

Choose Flow Software if

  • You need calculation engine.
  • You work on Windows, Web.
  • You also want measure model.
Flow Software review

Choose Formlabs PreForm if

  • You need automatic orientation.
  • You want to start without paying.
  • You work on Windows, macOS.
  • You also want support generation.
Formlabs PreForm review

Questions people ask

Is Flow Software or Formlabs PreForm better?
Neither clearly leads. Flow Software starts at $11390/one-time and Formlabs PreForm at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Flow Software or Formlabs PreForm?
Formlabs PreForm has a free tier; the other does not. Paid plans start at $11390/one-time for Flow Software and Free for Formlabs PreForm.
Does Flow Software or Formlabs PreForm run on more platforms?
Flow Software runs on Windows, Web. Formlabs PreForm runs on Windows, macOS.
Can I use Formlabs PreForm for free?
Yes. Formlabs PreForm has a free tier, so you can try it without paying. Flow Software starts at $11390/one-time.
What is Flow Software best used for?
Flow Software is most often used for a brewery replacing a fragile network of oee spreadsheets with governed calculations from the same historian data, reporting specific energy consumption per tonne against an iso 50001 audit where the calculation method must be documented, feeding power bi plant dashboards from a historian without giving analysts direct tag-level access, a site that needs lab results typed in and combined with automated tag data in the same yield calculation. Of those, a brewery replacing a fragile network of oee spreadsheets with governed calculations from the same historian data and reporting specific energy consumption per tonne against an iso 50001 audit where the calculation method must be documented are not what Formlabs PreForm is typically brought in for.
What can Flow Software do that Formlabs PreForm cannot?
Flow Software covers Calculation engine, Measure model, Historian connectors, Manual data entry. Formlabs PreForm covers Automatic orientation, Support generation, One-click print, Material presets.

Answered from the vendors’ own pages

Flow Software: Does Flow publish real prices?

Yes. Starter is 11,390 USD perpetual for 250 measures, Unlimited is 62,230 USD perpetual or 16,595 USD a year, and Distributed is 128,450 USD perpetual or 34,250 USD a year.

Formlabs PreForm: Is PreForm free?

Yes, with no licence fee, subscription or installation limit. It is free because it only prepares jobs for Formlabs printers.

Flow Software: Is perpetual licensing still offered?

Yes, at every tier, with the first year of maintenance included and renewal at roughly fifteen percent per year. Subscription is available on Unlimited and Distributed only.

Formlabs PreForm: Can PreForm drive a non-Formlabs printer?

No, and it never will. It is the front end for Formlabs hardware, which is where the revenue is.

Flow Software: Do I need a historian as well?

Effectively yes. Flow reads from historians, databases and OPC sources; it is a calculation layer, not a data collector.

Formlabs PreForm: Can I use third-party resin?

Only via open material settings, which take you outside validated profiles and the reliability those profiles are tuned for.

Flow Software: What counts as a measure?

Each configured KPI or event definition. A single line typically consumes ten to thirty, which is what makes the 250 Starter cap tighter than it looks.

Formlabs PreForm: Does it run on Linux?

No. Builds are provided for Windows and macOS only.

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