A number produced without questions should be treated as a warning, not a service level. A competent team will come back with a list of questions: about users and flutter development company volumes. A vendor that prices before understanding the scope is working from a template, and a guess resurfaces as a change order — and you will pay for it.
Be wary of any distance between the engineers on the sales call and the people who will code. Request named engineers in the statement of work, with a provision that requires notice before anyone is swapped. A team that only offers roles and will not commit to people is preserving the option to staff you with whoever is free.
Ask for access to the repository from the first week. A provider that shows code only at milestones is inviting you to take delivery on faith. Visible commits reveal who is really on the project far better than a slide deck. This extends to the automated test suite: if it does not exist, assurances about quality remain unverifiable.
Loose wording in the contract around intellectual property is rarely an oversight. The agreement should state explicitly that the code, designs and documentation belong to your business on payment. Also check the jurisdiction and how payments are structured: a large upfront payment with no milestone tied to it takes away your only leverage.
Last, software development process examine the working rhythm. Confirm how much working-time overlap there will be each day, who is expected to answer day-to-day questions and on what response times. Some genuine overlap is normally sufficient; no overlap stretches a five-minute question into a twenty-four hour round trip. Unclear written communication in the proposal will not improve under delivery pressure.
