Can you dropship from within the UAE?
Yes, and doing so is usually the stronger position. A local supplier means next-day delivery instead of three weeks, which is the single biggest difference between a store that gets a second order and one that does not.
What decides it
You will need a trade licence — mainland or free zone — and a payment gateway that accepts UAE cards. The cost of both is real and small against the delivery advantage.
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’.