When i download only the lite version

The installation files presented on this page will install FlexPDE7 in Lite mode and can be used free for evaluation. 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!

The Lite version can be unlocked to Professional mode by installing a license key of the appropriate 1D, 2D or 3D configuration. On the menu to the left, click Licensing to request a 30-day free trial or Pricing to see the pricing structure or Buy Now to purchase a license.

Licensed version 7 users can install over an older version in the 7.x series; your license key remains valid. Users of FlexPDE version 6 or earlier can install version 7 without invalidating your existing application. Version 7 installs in a separate folder, and uses a different license key or dongle.

Previous versions:

The last release of previous versions can be found on our support pages.
Access through the "Support" menu on the left or here :
FlexPDE version 5
FlexPDE version 6

All available downloads, including earlier releases of the current version can be found by name in the download directory.

Current version:

FlexPDE version 7.17 (Jul 14, 2020) (see changes) (see known bugs)
Includes documentation in Help or Html format. For documentation in PDF format for printing, see the FlexPDE Bookstore.

FlexPDE Installer:

CodeMeter Dongle Driver Installer:
(Version 7 only. For previous versions, use the support pages listed above.)

3rd Party Visualization Tools :

3rd Party CAD Tools :