Writing an App Brief That Gets Accurate Estimates

When three studios quote very different prices for the same app, they are usually not pricing the same app. Each has filled the gaps in the brief with its own assumptions. A brief that closes those gaps gets you estimates you can compare, and a first conversation that starts in the right place.

Start with the problem, not the screens

Describe who the app is for and what it lets them do that they cannot do now. "Clinic patients book and pay for appointments without calling" tells a team more than a list of screens, because it lets them suggest a simpler way to get there.

Separate must-haves from nice-to-haves

Write the features in two lists. The first is what version one cannot launch without. The second is everything else. Estimates for the first list are what you should compare; the second list tells the team where the product is heading so they do not paint it into a corner.

Name every integration

Payments, maps, SMS, an existing CRM or ERP, a hardware device, a government API. Integrations are where estimates go most wrong, because each one brings its own documentation, sandbox, approval process and failure modes. If you are unsure whether you need one, list it as a question.

Be specific about platforms and accounts

• iOS, Android, web, or which combination first?
• Do users sign in? With email, phone, Google or Apple?
• Is there an admin panel for your team, and what does it need to do?
• Which languages? Bangla and English means more than translating the strings.

Share the constraints

A launch date tied to an event, a budget range, an existing codebase, a compliance requirement, data that must stay in a particular country. Constraints are not awkward details to reveal later; they are what shapes the plan. Sharing a budget range in particular lets a team propose the version of the product that fits it, rather than the version they imagine.

Say what is undecided

An honest "we have not decided how payments work yet" is far more useful than a confident guess. Good teams will price the open questions as options or suggest a short discovery phase to settle them.

What a good response looks like

A careful studio replies to a brief with questions before it replies with a number. If an estimate arrives within an hour and asks you nothing, it is pricing its own assumptions, not your product.

Send us a brief, however rough, through the contact form: an engineer reads it and replies with the questions that matter for your estimate. If you are still deciding how to work with a team, this comparison may help.