FlexPDE Licensing

FlexPDE License Configurations


The Professional configuration unleashes the full power of FlexPDE. It has effectively unlimited mesh size, and unlimited number of simultaneous equations (subject to available computer resources). The professional configuration can be licensed with 1D capability only, 1D+2D, or 1D+2D+3D power.


The Lite (evaluation) configuration is free. In this mode, unkeyed scripts that you create will be restricted to five simultaneous equations, as well as 100, 400 and 1200 mesh cells in 1D, 2D and 3D, respectively, for a cubic model. (The cell maximum is based on the interpolation order and will increase for quadratic and linear models.) You can also run problems which have been specially keyed by PDE Solutions Inc. (see the Samples folder).

All keyed problems will run in full Professional mode. You can change any numeric or textual (string) item in a keyed demo problem without invalidating the key! A vast number of meaningful problems of science and engineering can be addressed within these limits. The Evaluation configuration can be unlocked to Professional mode by the purchase of a professional license.

Free Trial

For those who wish to evaluate FlexPDE more completely with their own problems, a free 30-day Professional 3D license is available.

  • Download and install the Lite version, run it and click "Help | Register FlexPDE".
  • Record the Computer ID shown on the Registration dialog.
  • Enter the Computer ID into the Trial License Request form below.
  • Qualified requestors will receive a trial license by email.

License Methods

Internet Key

The standard method of licensing FlexPDE Professional is by internet activation. This mode of licensing generates a text key that locks the execution of FlexPDE to a specific computer. Access to the internet is required on a periodic basis to validate the key. The key can be released from one machine and reactivated on another without difficulty. This method can have multiple seats associated with the same serial number.

CodeMeter USB Dongle (Wibu Cm)

FlexPDE Professional can be configured to use a portable USB hardware key (dongle). Unlike previous dongles, this dongle can be used in both local and network mode. When desired, the dongle can be programmed with any number of license seats. FlexPDE can be run on any machine that has access to the dongle and there are available licenses. There is a $50 surcharge for the dongle. Dongle surcharge is waived for upgrades of existing CodeMeter dongles.
Note: HASP dongles from versions prior to v7 cannot be upgraded to v8, so a new CodeMeter dongle will need to be purchased.

Software Key

On special request, Professional configurations can be licensed in the form of a text key that locks the execution of FlexPDE to a specific computer. If you prefer a software license key, you must first download and install the software and record the computer ID from the "Help | Register FlexPDE" screen. Include the computer ID on the license application form. Your software key will be sent to you by Email. Copy this key to the FlexPDE installation directory (you may need administrator privileges to do this).

Note: this method has been replaced with the Internet Key, and is only available in special circumstances.
Upgrade price for existing Software Key licenses includes upgrade to portable Internet Key.

Get Started with FlexPDE 8 Software

Join hundreds of the world's most sophisticated scientists, and take advantage of the most versatile problem-solving environment in existence.

What Our Customers Say

"I am impressed by the beautiful simplicity of FlexPDE and its efficiency of design and execution."

~ R.R., USA, User Support

"FlexPDE is a marvelous tool 🙂 It is being used so intensely by me and my colleagues that we will need more licenses soon."

~Deiter, Ulm, Germany


"Thank you very much for your kind help on using FlexPDE. Since I derived my governing equations, I had gone through several packages ... and found out that FlexPDE is the most promising and powerful tool for my problems."

~ J.Y., USA, User Support

"I must congratulate you on developing a really easy to use software package with truly impressive capabilities. I know of no other FEM software package that comes close to FlexPDE in the ease of setting up problems, and I intend to use FlexPDE extensively in my research work."

~ A.W., USA, User Support

"I use FlexPDE for a lot of very different analysis types and a lot of problems in my job. I am very satisfied with FlexPDE and it has become my favorite FE tool, because many things are so much simpler in FlexPDE than in other conventional and expensive FE systems."

~ Wieland, Dresden, Germany

"I have modeled a wide variety of lab experiments and problem types with FlexPDE. ... multi-phase porous media flow, consolidation and fracture propagation in deformable porous media, electrochemical double layer phenomena, electromagnetic design of MRIs, ultrasonic signal propagation, double-diffusive transport equations in nuclear particle physics, ..."

~ A.W., USA

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