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From App Idea to Working Software Without Coding, in 5 Phases

Takes an app idea to a buildable product for non-coders in five phases: validation with a go/no-go verdict, the MVP feature set, a ready prompt for an AI coding tool, plain-English bug fixing and a full main-screen UI spec.

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  1. Phase 1 — Validate the idea
    Role: you are a strategist for software products.

My app idea: [app idea]

Task: validate this idea for me. Include:
1. the core problem it solves
2. a profile of the target user
3. the top 3 competitors and where each one is weak
4. the smallest version worth building first (the MVP)
5. a go or no-go recommendation, together with the single biggest risk I must deal with before I build anything
  2. Phase 2 — Map the MVP features
    Role: you are a product manager.

What I want to build: [app idea]

Task: define the full set of features for the MVP. Include:
1. the 5 core features required at launch
2. 3 features to leave out until version 2
3. a user flow that describes how a person completes the main action
4. a product description of one paragraph that I can hand straight to any developer or AI coding tool as a brief
  3. Phase 3 — Prompt for the AI coding tool
    Role: you are an expert in vibe coding.

Feature I want to build: [feature]
Type of app: [app type]
My coding experience: none

Task: write me a complete, ready-to-paste prompt for an AI coding tool that will generate this feature. That prompt must contain:
- a recommended tech stack
- an exact description of how the feature works
- the edge cases to handle
- the precise format in which the coding tool must deliver its output
  4. Phase 4 — Fix a bug in plain English
    Role: you are a debugging expert who helps people who do not code.

Feature: [feature]
Error produced by the code the AI generated: [paste the full error message]

Task:
1. Tell me, in plain English, what the error means.
2. Tell me the most likely cause.
3. Write the exact prompt I should send back to my AI coding tool so that it repairs the error without breaking any part that already works.
  5. Phase 5 — Design the main screen
    Role: you are a UI design expert who helps people who do not code.

What I am building with AI coding tools: [app type]
Framework I am using: [framework]

Task: describe the complete user interface of my main screen. Include:
- the layout structure
- the color scheme
- where the buttons go
- the direction for the typography
- the exact prompt that will make an AI coding tool build this UI accurately in my framework
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    I want to create a simple app starting from nothing.

- App idea: [app idea]
- Who will use it: [target user]
- What it should help them achieve: [what the app should help them do]
- Core features: [3 to 5 simple features]
- Preferred tech: [React / Next.js / plain HTML, CSS and JS / your choice]

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1. Ask me any questions that matter for the build.
2. Then draw up a simple build plan that covers the pages, the components, the data structure and what version 1 includes.

Version 1 must stay small. I want an app that works before we add any advanced feature.
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    Following the plan we agreed on, build version 1 and nothing more: the smallest version of the app that works.

Requirements:
- the app loads
- the main feature works
- the design is clean enough to test with

Leave out login, payments, a database, notifications, admin dashboards and every other advanced feature, unless one of them is truly essential.

When the build is done, run the project, look for errors and fix whatever is broken.
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    Run the app and examine the error.

1. Explain in plain English what is broken.
2. Fix it with the smallest change that is safe.
3. Run the project once more and confirm the app is working.

Do not touch files unrelated to the problem unless the fix requires it.
  4. Phase 4 — Add one feature
    Next feature to add: [feature]

- Before you write code, tell me which files you will modify and why.
- Once the code is written, test the app and check that the existing features still work.
- Keep the design in line with the current app and do not make the structure more complicated.
  5. Phase 5 — Product-design review
    Look at this app the way a product designer would and tell me:
- what feels confusing
- what should be taken out
- what should be made clearer
- what a person using it for the first time would miss
- what would make the app more useful

Then improve the interface without making it complicated. It must stay clean, simple and easy to understand.
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    Before launch, draw up a checklist for this app. Look for:
- broken pages
- errors in the console
- layout problems on mobile
- copy that is confusing
- missing empty states and loading states
- basic accessibility issues
- anything else that makes the app feel unfinished

Sort the issues from most to least important, then fix the top ones first.
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