How to use the Software Requirements Document Generator
This generator turns a few answers about your project into a one page requirements brief you can send to development vendors. It drops your project name, users, features and platform into a fixed set of sections that vendors expect: overview, goals, users, scope, platforms, out of scope and success metrics. It is for founders and managers who want comparable quotes without writing a spec from scratch.
Step by step
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Name the project
Type a Project name, for example FleetTrack dispatch portal. If you leave it empty, the brief says Your project.
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Say what you are building
Choose from What are you building?: Web app, Mobile app, SaaS product, Internal tool or E-commerce store. Web app is the default.
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Describe the users
In Who will use it?, name the people who will use it day to day, such as field technicians and dispatchers. The brief repeats this in the overview, the goals and the success metrics.
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Pick the core features
Under Core features (pick the ones you need), tap each feature to toggle it. User accounts & login and Dashboard & reporting are ticked at the start. Each ticked feature becomes a line in the scope section.
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Choose the platforms and copy the brief
Under Platforms, pick Web, Web + Mobile or Native apps. The brief rebuilds as you go, beside the form on a wide screen and below it on a phone. Press Copy to clipboard to copy it as plain text, then paste it into an email or a document and edit it there.
Reading the brief
- Project overview, Target users, Core features / scope and Platforms come from your answers.
- Goals and Success metrics are standard lines with your app type and users filled in, including a 99.9% uptime target, which works out to about 43 minutes of downtime a month.
- Out of scope (v1) is the same four items for every brief: advanced analytics or AI, native apps when v1 is web only, deep integrations not listed, and custom branding work. Edit it to match your plan.
- If you tick no features, the scope section says the core feature set is to be defined with the vendor.
Tips and common mistakes
- Read the fixed sections before you send the brief. If you picked Native apps, delete the out of scope line about native apps.
- Add the domain detail only you know, such as existing systems, data you already hold and any deadline, once you paste the brief into your own document.
- Send the same brief to two or three vendors so their quotes describe the same project.
- Keep v1 small. A short, honest out of scope list keeps the first release faster and cheaper.
Privacy and limits
The brief is assembled in your browser. Nothing you type is sent anywhere or saved, so reloading the page clears the form. Copying uses your browser's clipboard.
How it works
A software requirements document (sometimes called an SRS or a project brief) is the single most useful thing you can hand a development vendor before asking for a price. When every vendor reads the same overview, feature list, platforms and success metrics, their quotes become comparable, instead of a stack of guesses built on different assumptions.
This generator asks for the essentials: what you are building, who it is for, the core features you need, and where it should run. It then assembles those answers into a clean, structured brief with the sections vendors expect, overview, goals, target users, scope, platforms, out-of-scope items, and success metrics. The out-of-scope section matters as much as the feature list, because naming what you are not building in v1 is what keeps a first release fast and affordable.
Think of the output as a starting point, not a legal contract. Copy it, refine the wording, add any domain detail only you know, and share it with two or three vendors. A tighter brief in means tighter, more honest quotes out. For names to send it to, see our custom software development company list. If you want us to price it, see what our software development services include.
brief quality = clear scope + named users + explicit out-of-scope → comparable vendor quotes
Once you have a brief, pressure-test the budget with the software development cost calculator, or weigh building custom against an off-the-shelf option with the build-vs-buy calculator.
FAQs
What is a software requirements document?
It is a short, structured description of what you want built, the purpose, the users, the core features, the platforms and how success is measured. It gives developers a shared reference so they can scope, quote and build the right thing instead of guessing.
Do I need one before getting quotes?
Yes, if you want quotes you can actually compare. Without a written brief, each vendor makes different assumptions about scope, and their prices reflect different projects. A one-page brief makes every quote apples-to-apples and surfaces disagreements early, while they are cheap to fix.
How detailed should the brief be?
For a first conversation, one page is plenty. Nail the problem, the users, the must-have features and what is explicitly out of scope for v1. Deep technical specs can come later, over-specifying up front often locks in the wrong solution before a vendor has weighed in.
