The App Development Brief Template: What to Send Before the First Call
Most agencies will tell you they need “a brief.” Almost none of them tell you what that document should contain. So founders send a two-page feature list, the agency sends back a discovery proposal, and three weeks disappear into calls that could have been one email.
This is the template we wish every prospective client had. It is not a formal RFP — it is the short, honest document that lets an agency give you a real answer instead of a defensive one. If you have already read how to brief an app development agency without wasting your first month, this is the fill-in-the-blanks version of it.
A good brief is two pages, not twenty. Its job is not to specify the solution — it is to make the problem impossible to misunderstand. Everything below fits on two pages.
1. The Nine Sections of a Brief That Works
2. Copy This Skeleton
Paste this into a doc, fill it in, and send it before the first call. Fifteen minutes of writing routinely saves two weeks of discovery.
PROJECT BRIEF — [Company] — [Date]
1. SUMMARY
We are [company, one line]. We want to build [one sentence].
2. THE PROBLEM
Today, [who] has to [what], which costs [time/money/churn].
In their words: "[quote]"
3. USERS
Primary: [role], approx [N] users, [internal/external]
Secondary: [role], approx [N]
4. SUCCESS
Primary metric: [metric] — today [X], target [Y] by [date]
Secondary: [metric]
5. WHAT EXISTS
[repo / Figma / prototype / spreadsheet / nothing]
Access: [link or "can share under NDA"]
6. CONSTRAINTS
Stack: [locked to / open]
Compliance: [none / GDPR / HIPAA / SOC 2 / other]
Other: [procurement, IT approval, data residency]
7. DECISIONS
Design sign-off: [name] Scope sign-off: [name]
Commercial sign-off: [name]
8. BUDGET & TIMELINE
Range: [X–Y] Date that matters: [date] because [reason]
9. HISTORY
We previously tried [what]. It failed because [why].
10. OPEN QUESTIONS
[things you genuinely do not know and want help deciding]Include an “open questions” section and see what comes back. An agency that engages seriously with your unknowns is thinking about your problem. An agency that ignores them and quotes anyway is thinking about your budget.
3. What to Deliberately Leave Out
Over-specification is as expensive as under-specification. These four things belong in a conversation, not a brief.
4. What a Good Response Looks Like
Send the same brief to three agencies and the replies sort themselves quickly.
If you are still deciding whether an agency is the right route at all, our in-house team vs. software agency comparison works through the trade-offs, and what a web app actually costs in 2026 explains why any honest estimate arrives as a range.
Send us the two-pager.
Fill in the skeleton above and send it over. We will come back with questions, the parts we would cut, and an honest range — before anyone books a discovery call.