PricingPrices in USD · excl. VAT

Cheaper than
the spreadsheet
you'd build.

A single outsourced techno-economic study runs $20,000–50,000. An engineer building the same thing in Excel costs about three weeks.

Start free. Pay when you want to keep the answer.

01 — Free

Free

Everything you need to find out whether this answers your question.

$0 forever No card required
No card, no time limit
Start designing →
  • Full drag-and-drop flowsheet canvas
  • Unlimited mass-balance simulation
  • 300+ molecule library
  • 5 route-generation runs / month
  • 3 saved projects
  • No export
  • No AI connector
02 — ProMost engineers

Pro

One engineer, unlimited exploration, and output you can put in a deck.

$600 per year = $50 / month
$75 per month = $900 / year
Annual saves $300 a year — 33%
Get Pro →
  • Everything in Free
  • 100 route-generation runs / month
  • Unlimited saved projects
  • PDF and Excel export
  • Custom molecules
  • Sensitivity analysis and investor metrics
  • Multi-product route generation
  • AI connector (MCP) access
01
What it replaces

The honest comparison

untangle.bio is not a replacement for detailed process simulation, and we are not going to pretend otherwise. It answers a different question, earlier: which route should we even be modelling?

Getting to a costed downstream route
Outsourced TEA study Weeks of lead time, one route, a PDF at the end. $20k–50k
Detailed simulation seat Aspen, SuperPro and similar. Deep, rigorous, and priced for a process engineering department. $10k–45k / yr
An engineer and a spreadsheet Roughly three weeks of loaded salary, and it goes stale the moment the feed changes. ~$10k
untangle.bio Pro Thousands of routes ranked on yield, purity and installed cost, in an afternoon. $600 / yr

Use us to choose

The generator lays out every downstream train that would actually run in a plant, prices each one, and ranks them. You end up with a shortlist you can defend, not a hunch.

Use them to engineer

Once the route is picked, take it into a rigorous simulator for detailed design, equipment specification and validation. That is a different job, and a good one to do properly.

02
Questions

Before you ask

What counts as a route-generation run?

One press of the generate button. Behind it, roughly 30,000 candidate trains get built, simulated and scored, so a single run is genuinely a lot of computation. Building flowsheets by hand and running the mass balance is unlimited on every plan, including Free.

Why is annual so much cheaper than monthly?

Because of how this tool actually gets used. You design a process, find your route, and then quite reasonably do not need us again for a few months. Annual billing fits that rhythm and we would rather pass the saving on than pretend the usage is steady.

If your need is genuinely one-off — a single grant deadline, one diligence exercise — take the monthly plan for the month you need it and cancel. That is a normal way to use this and we are not going to make it awkward.

What happens to my projects if I stop paying?

Nothing is deleted. Your projects stay in your account and stay readable — you can open them, look at them and export them again if you resubscribe. You drop back to the Free limits for new work.

Is the cost model accurate enough to raise money on?

It is an order-of-magnitude model built on published equipment cost curves, per-operation scaling exponents and Lang factors for installation. That is the right resolution for comparing routes, sizing a raise, or sanity-checking a grant budget.

It is not a substitute for a vendor quote or a detailed FEED study, and you should not use it as one.

Can I use my own equipment costs?

Not yet. Costs come from our own database of published equipment curves, and you cannot currently override them with your own vendor quotes. It is the change we hear asked for most, so if it matters to you, email us and say so — it helps us decide when to build it.

Do you have team or enterprise plans?

Not today. Right now it is one account per engineer, and we would rather do that well than sell seats we have not built properly yet.

If you need several people working off shared projects, email us and tell us what you actually need. We will sort something out, and you will be shaping what the plan eventually looks like.

Do you charge VAT?

All prices exclude VAT. EU business customers with a valid VAT number are handled under the reverse-charge mechanism at checkout.

I am a one-person company and $600 is a lot.

Email us. We would rather have you using it than not, and early users who tell us what is broken are worth more to us than the invoice.

Start on the free plan.

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