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Open with the problem you are solving, not a list of screens. Which people will use this, how many times a day, and how is the job done today? An estimator who understands the goal will suggest a simpler way to reach it; a team that receives only a feature list prices exactly what you asked for.

Set out the scope as user stories or scenarios: react native development agency a walk through each important path. Equally important, state explicitly what the first release deliberately excludes. An explicit exclusion list removes more disagreement later than the rest of the brief combined. Indicate as well which decisions are settled and which may still change — estimators price uncertainty, and pretending everything is fixed helps no one.

Set out your constraints. The list covers systems you must integrate with, existing databases and their quality, compliance requirements, laravel vs nextjs expected load, target platforms and any technology you are committed to. Where a date is genuinely fixed, say what depends on it: a good team can often cut the right scope to meet it, but not if the date is a secret.

Write down what the word done means for the important items. Acceptance criteria need not use any formal notation: a short list describing what a user should be able to do is sufficient. That one addition shortens acceptance testing considerably and closes off most late-stage disagreement.

To close, say what you expect back. Require an itemised estimate, a written list of assumptions, whatever the team considers risky and a range rather than a single figure. Read a wide range as useful information rather than evasion: it usually points to where your description is thin. From there tighten that section and ask for a new estimate — the revised figure will be far closer to reality.