Windows
Open PowerShell in the folder containing the APK and run Get-FileHash .\Praecheck-v0.10.6.apk -Algorithm SHA256. Compare the result with the downloaded checksum file.
Official signed Android release. The production application performs assessment processing locally and does not request Android's INTERNET permission.
The signed APK may be downloaded before or after purchase. Licensed operation requires a valid signed Praecheck .pcl licence file.
Download the current production APK and install it on the Android device. Android may require installation permission for the browser or file manager used.
Personal supports up to 2 personal devices; Power supports up to 10. Purchase availability and payment options are shown on the Praecheck pricing page.
Copy the Installation ID from Praecheck and submit it with the purchase reference provided for your order on the activation page to obtain the signed offline .pcl licence.
The checksum provides an independent integrity check that the downloaded APK matches the published Praecheck release.
Open PowerShell in the folder containing the APK and run Get-FileHash .\Praecheck-v0.10.6.apk -Algorithm SHA256. Compare the result with the downloaded checksum file.
If you use Termux or Linux, keep the APK and checksum file in the same folder and run sha256sum -c Praecheck-v0.10.6.sha256. A matching file reports OK.
Use the Praecheck download page and the downloads.praescius.org.uk release host. Checksum verification is available when independent file-integrity validation is required.
Observed/current Android state and granted access are prioritised independently from inferred app capability.
App and SDK capabilities are assessed for possible association, profiling, enrichment and potential commercial or bulk-dataset usefulness if relevant data were actually collected.
Exact embedded component versions are matched against the bundled offline advisory catalogue. Conditional data-access paths and other software issues are kept separate, and a match does not by itself prove reachability, exploitation or routine bulk-data accessibility.
Retain a local timeline of up to 50 assessments with version and role context.
A changed assessment model starts a new comparison baseline rather than creating false device regressions.
Praecheck Personal is a one-time licence for up to 2 personal devices and includes 12 months of updates.