Feature spec
Goal: Send a clear invoice after finishing a job.
- Add a client, line items, a due date, and payment instructions.
- Preview the total before exporting a PDF.
- Keep an editable draft if export fails.
App Overview
You Doodle Pro - art on the go
You Doodle Pro lets you draw with hundreds of tools
$5.99 · In-app purchases
PRICE
$5.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.8
2,006 ratings · Top 5%
Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.
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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included17 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
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Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Screen plan
Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.
States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.
Differentiate and validate
Hypothesis: Contractors need faster repeat invoices more than more templates.
First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.
The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.
Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.
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Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for You Doodle Pro - art on the go: map the core Graphics & Design workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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Opportunities
AI-GENERATED OPPORTUNITY HYPOTHESES
These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.
Hypothesis 1
Offer more advanced tools like layers, blending modes, and customizable brushes.
Assumption to check: Users find the drawing tools limited compared to desktop alternatives.
Validate with people who use this workflow before building.
Hypothesis 2
Implement a streamlined save and share process with cloud integration.
Assumption to check: Saving and sharing artwork can be cumbersome.
Validate with people who use this workflow before building.
Hypothesis 3
Optimize app performance for handling larger canvases and files.
Assumption to check: Some users report performance issues with large files.
Validate with people who use this workflow before building.
Hypothesis 4
Simplify and declutter the UI for easier navigation and use.
Assumption to check: The user interface can feel cluttered.
Validate with people who use this workflow before building.
App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
App Store description
You Doodle Pro lets you draw with hundreds of tools. Easily add text and memes, shapes, stamps and stickers. Recording the screen for speed paints is easy to do. Collages and frames are simple and there are hundreds to choose from for every season or holiday. You Doodle Pro has NO ads and is a FULLY unlocked, paid up front version of You Doodle. I don't make you pay for anything once you buy You Doodle Pro. No extra in-app purchases or subscriptions. You buy it once and you get everything - forever! You Doodle Pro is used by students, doctors, car mechanics and many more. You Doodle Pro is great if you just want to have fun as well. With the features of dozens of photo editors combined, you'll never want for another app. You can even draw with your friends on the same WiFi network! Apple pencil, Adonit and Pogo Connect stylus support lets casual and professional artists use You Doodle to create masterpieces. You Doodle Pro costs almost nothing - less than a fast food meal! I know you'll love the app, download You Doodle now! Follow on Instagram: @you_doodle - http://instagram.com/you_doodle) Follow on Twitter @YouDoodleApp Like on Facebook - http://facebook.com/youdoodle Support email - [email protected]
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
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Build scope
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Define the first version
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Set boundaries
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Check the hard parts
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
SUGGESTED BUILD STACK
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expo-image-picker
BUILD KIT DIFFICULTY
Advanced
From the Build Kit assessment.
A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.
