Thoma Bravo has invested into digital user experience company UserZoom at a valuation of $800m.

UserZoom offers participant recruitment engines and other professional services that provide in-depth quantitative and qualitative insights for testing, measuring and improving digital product experiences. It can combine user and customer attitudes and behaviour into a single score on a 100-point scale for easier application.

Software-focused private equity heavyweight Thoma Bravo had picked up a commitment from the Texas County & District Retirement System last month as it looks to raise a successor for its $17.8bn Fund XIV vehicle.

The LP has agreed to commit up to $150m to Fund XV, and an identical amount to the firm’s fourth Discover Fund, which focuses on smaller investments than its main vehicle.

Read more: AltAssets