Open with the problem you are solving, not a list of screens. Who will use this, how often, and what happens today? An estimator who knows what you are trying to achieve can propose a simpler way to reach it; someone handed only a list of screens prices exactly what you asked for.
Define what is included as short scenarios: global software development company who does what, and what happens next. Just as important, write down what you are not building. An explicit list of exclusions saves more disagreement at delivery time than the rest of the brief combined. Mark too which parts are firm and which may still change — estimators price uncertainty, and pretending everything is fixed only hurts you.
Write down the hard constraints. This means the platforms and kotlin development services involved, the data you have and where it lives, security and compliance rules, expected load, which devices matter and any technology you are committed to. If there is a hard date, say why: a team is usually able to resequence the work to protect it, provided they hear about it early.
Say what the word done means for each item. Testable acceptance criteria do not require formal language: a short list describing what must be true when the feature works will do. This one section shortens acceptance testing considerably and kubernetes web development company removes most late-stage disagreement.
Finally, state what you want in the response. Request a task-level breakdown, the assumptions used, the risks the team sees and a low number and a high number. Read a wide range as a signal about the brief: it normally identifies the part of the brief that needs work. From there rewrite that part and request a revised number — the revised figure tends to be the one worth planning around.