As much as you want, we’ll work with you through design, scoping and prototyping and won’t move things along until you’re happy with everything. We’ll start providing regular builds of the app to you around halfway through the app development project (we’ll also note down which parts are complete and which parts need more work). We’ll incorporate your feedback through the second half of the build. We offer 3 months of support after delivering on the original proposal, so you have time to find and report the sorts of issues that might take a bit of time to notice.