System Requirements
Licence Information

Downloads are available for WINFAP 5 and WINFAP 4 below. Please also download the latest Peak Flow Dataset: here.

WINFAP 5 uses the new NRFA Peak Flow catchment descriptor xml files, and has improved data auditing functionality. WINFAP 5 does not support old Peak Flow Datasets (version 9 and earlier) nor WINFAP 4 project files (.feh4).

To allow continued use for existing studies, the legacy WINFAP 4 can be installed alongside WINFAP 5 and we currently issue WINFAP 4 serial numbers with each WINFAP 5 purchase.


Download WINFAP5 version 5.0.8181
Checksum: fdf865e037e9901920fa460d0f87badf
  • Release date: 27 May 2022
  • Version: 5.0.8181

Release notes:

  • See What's new in WINFAP 5.
  • Fix issue where the application may close unexpectedly when modifying pooling group members.
  • If you are an existing user upgrading from an earlier version of WINFAP 5 you should not uninstall your current version first: install the new version on top. This ensures your settings and licence details are preserved.


Download WINFAP4 version 4.2.7282
Checksum: ec28dd64983eedbe398898faaa3b2434
  • Release date: 09 Dec 2019
  • Version: 4.2.7282

Release notes:

  • WINFAP 4.2 incorporates the Peak Flow v8 data.
  • There is no requirement for WINFAP 4.0 or 4.1 users to upgrade to WINFAP 4.2 if you have downloaded the Peak Flow v8 data from the NRFA website.
  • Note if you upgrade from WINFAP 4.0 or 4.1 to WINFAP 4.2 you will need to update the Load Options Station file path, as this will maintain your previous settings.
  • For new installations of WINFAP 4.2, your Load Options Station file path will automatically connect to Peak Flow v8 folder.