How to write an app requirements document that gets you an accurate quote

What a good brief actually contains

• The problem — who is this for and what pain does it remove?
• The core journeys — the 3–5 things a user must be able to do
• Platforms — web, Android, iOS, or all of them
• Must-have features vs nice-to-haves — be honest about the difference
• Any integrations — payments, maps, messaging, existing systems
• Your rough budget range and target launch date

Separate the MVP from the wishlist

The most valuable line in any brief is the one that divides "needed to launch" from "later." Everything you can push to phase two makes your first version cheaper, faster, and less risky. A good partner will help you draw that line — but arriving with a first attempt at it tells them you're a serious client and gets you a sharper number.

What you don't need to specify

You don't need to choose the database, the framework, or the hosting — that's the engineering team's job, and pinning it early usually costs you money. Describe the outcome you want; let the builders choose the tools. Focus your words on what the product does and who it's for.