Pick your printer so the bed outline matches what you'll actually print on. Parts outside the dashed bed won't fit.
Your STL file works with every slicer — Bambu Studio, PrusaSlicer, Cura — or any online print service. Supports are added automatically by your slicer if a model ever needs them; flat tva3d parts almost never do.
Save a design so you can come back to it later. Saved projects live on this device. Use Save to file to keep a copy you can move between your iPhone, iPad and computer — or back up to iCloud/Dropbox.