Buy

Get a license.

Try Alpaca4d free on small models. A license unlocks every component, at any size: 30 € a year for students, 490 € a year for professionals, plus VAT. We email you a product key, and you activate it in Grasshopper under Alpaca4d ▸ License ▸ Activate License.

Free

0 €

No license needed. Try it on small models.

Every component that builds a model
Analyses of up to 50 elements, seen in Model View
Results as numbers, with the Results components

Download

Student

30 €+ VAT a year

For study and research. Not for commercial work.

Every component, any model size
One computer, for one year
A valid student ID is needed

Send your student ID

We check it and reply with how to pay.

Professional

490 €+ VAT a year

For commercial work, at a firm or on your own.

Every component, any model size
One computer, for one year
Email support, answered within 48 hours

Pay with PayPal

Or pay by bank transfer.

You pay for the Alpaca4d plug-in only, not for OpenSees. OpenSees, the engine that solves your model, is open-source software from UC Berkeley. You download it yourself, from them, subject to its own license. Alpaca4d does not include, bundle or resell it.

Compare

What each one can do.

Student and Professional unlock the same components. Only who may use them, and for what, is different.

Feature	Free	Student	ProfessionalPro
Build the model
Materials, sections and elements: beams, trusses, shells, bricks and tetrahedra	Yes	Yes	Yes
Supports, loads and Assemble Model	Yes	Yes	Yes
Import from Karamba3D, export to FEM-Design	Yes	Yes	Yes
Analyse
OpenSees, the engine that solves the model	Not sold here: downloaded by you from UC Berkeley, subject to its own license
Static analysis, vibration modes and linear buckling	Up to 50 elements	Any size	Any size
Results as numbers: displacements, forces and stresses	Yes	Yes	Yes
See the results
Model View: the model, deformed shapes, contours and diagrams	Up to 50 elements	Yes	Yes
Design sections
Moment Curvature and its diagram	No	Yes	Yes
Interaction domains: N-M, My-Mz, 3D and Domain Check	No	Yes	Yes
Optimise
Topology Optimisation, and the analysis of the design it finds	Up to 500 elements	Any size	Any size
Section Optimiser	No	Yes	Yes
Non-Linear Optimisation	No	Yes	Yes
Design Explorer: Explorer Inputs and Explorer Record	No	Yes	Yes
Terms
Email support, answered within 48 hours	No	Yes	Yes
Price	0 €	30 € + VAT a year	490 € + VAT a year

Terms

Terms and conditions.

What a license covers, and what it does not, OpenSees included, is set out on the License page of the docs.

A license is for the Alpaca4d plug-in only. OpenSees is not part of the purchase: it is software from UC Berkeley, which you download from them, subject to its own license. Buying Alpaca4d gives you no rights in OpenSees and takes none away.
A license is for one computer. It runs for 1 year from the date of supply, or from the end of your previous license if you renew before it ends.
When a license ends, Alpaca4d goes back to the free limits until you renew. Your Grasshopper files and models are not affected.
A Student license is for students, for study and research only, and not for commercial work. Send a valid student ID with your request. We use it only to check that you study, and delete it once checked.
A Professional license is for any work, commercial work included.
Support by email to alpaca4d@gmail.com while your license runs. We promise a maximum 48 hour response time unless prevented by deliverability problems. Notify us if you use a different email address from the one your product key is sent to.
We will email you a product key within 48 hours of receipt of payment. To renew, you may need to give your current product key. Get in touch if you change computer.

Invoices

If you require a quotation, proforma invoice, or your company's details on your invoice, email alpaca4d@gmail.com before paying. Otherwise you will receive an invoice showing your name and email address.

Payment by bank transfer

An alternative to credit card payment is international wire transfer or local bank transfer.

Account name: Marco Pellegrino
Account number: IT65 A036 4601 6005 2623 7791 804
Receiving bank: N26 Bank
SWIFT code: NTSBITM1XXX

Include your name or company name with the transfer, and notify alpaca4d@gmail.com after making the payment.