<p>BidLight turns your Revit model into a record by capturing every publish as a versioned snapshot and comparing it with the last one.</p> <p>Here is how it works:</p> <ul><li>Publish your model from Revit.</li><li>The snapshot stores its own files, author and milestone.</li><li>Any two revisions compare element by element, grouped by structural, MEP, envelope and interior.</li><li>Issues pin to the elements they concern and carry the sheet and revision.</li><li>As the design changes, the record keeps growing, so you never chase scattered updates.</li></ul> <p>The result is one record of the project, kept as the work happens.</p> <p>Plans are priced per license, annual or monthly: Basics $260 a year ($30/month), Core $330 ($39/month), Complete $440 ($51/month) and Max $590 ($69/month). Every plan includes unlimited projects, and AIA members get discounts of up to 29%.</p>