What is the difference between dropshipping and print on demand?
Print on demand is dropshipping where the product does not exist until somebody orders it. The supplier relationship is the same; the inventory risk is lower and the margin is usually thinner.
What decides it
The practical difference is control. A print-on-demand supplier controls the print quality that carries your brand, and a bad batch is your problem and your review. With ordinary dropshipping you at least chose a product that already existed and could be inspected.
The part that gets skipped
A dropshipper who survives past the first year almost always stops dropshipping — they start holding stock for their best sellers, because that is where the margin is.
Returns are where the model is tested. If your supplier will not take a return, you are the returns department.
Dropshipping’s hard part was never finding a product — it is that you do not control delivery, and delivery is what a customer remembers.
Where an app fits
An app is worth building once people buy from you a second time. Most dropshipping stores never reach that point, which is why the honest answer here is usually ‘not yet’.