Collaborate. Have a colleague install the trial. Edit the same model simultaneously. Break it on purpose. See how it handles merge conflicts.
Recreate an old project's massing. Do not start a new design. You need to test edge cases. Import a messy CAD site plan. See how FormIt handles it. formit pro trial
However, if you are a solo practitioner who works offline and hates subscription models, skip the trial. The free version of FormIt (web) combined with Blender (free) will cover 90% of your needs. Collaborate
The Revit test. Export your mass to Revit. Try to schedule the masses. Try to apply walls to the masses. If this process takes more than 2 clicks, FormIt has failed. Break it on purpose
The FormIt Pro trial is not a tool for hobbyists. It is a highly specific sales tool aimed at converting SketchUp/Rhino users into the Autodesk ecosystem. If your final deliverable is a Revit file, FormIt Pro is arguably the best conceptual tool on the market. The trial lets you verify that claim.
In the world of architectural design, the gap between a hand-drawn napkin sketch and a fully parametric Revit model is vast. For years, that chasm was filled with clunky massing tools or expensive, complex software.
Use the trial to test the pipeline , not the pencil. If the geometry transfers to Revit cleanly, pay the subscription. If not, walk away before the 30 days are up.