Using Another Options App
3D Bits builds your option panel and prices it. Here is when a separate product options app still makes sense, and how to run one alongside.
Custom Forms
The contract between your own product form and 3D Bits - what each element reports, how a change is noticed, and how field names become keys.
Logic Without a Panel
What Composer's Logic rules still do when 3D Bits draws no option panel and every choice comes from your theme or another app.