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
Simply Draw: Learn to Draw
Learn and practice drawing beautiful pencil drawings on paper.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
821,490 ratings · Top 15%
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 should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included18 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
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 Simply Draw: Learn to Draw: map the core Education workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
Learn and practice drawing beautiful pencil drawings on paper. Creator Reviews: * “Simply Draw makes creating art a very calming and fun experience! The app inspires you to draw your own way and gives you a personalized path that teaches you exactly what you’re interested in. It’s truly the best way to learn and develop your skills.” * “Simply Draw made me hang my art on the fridge! Never in my life did I ever think I’d be proud enough of my work to do something like that, it’s really amazing”. Features (AKA: Why it’s amazing) * Receive a customized learning journey- Learn to draw what interests you! * Draw along with easy-to-follow video tutorials made by professional artists and teachers. * Learn at your own time, your own pace. * Learn and master new drawing skills. * Get insightful tips and tricks to help you even with the most challenging drawings. * New drawing sessions added weekly. Privacy policy: https://www.hellosimply.com/legal/privacy Terms of use: https://www.hellosimply.com/legal/terms
Written user reviews are not shown here. Check current App Store reviews >
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
Implement a centralized progress dashboard that visualizes users' learning paths.
Assumption to check: Users often find it hard to track their progress across multiple courses.
Validate with people who use this workflow before building.
Hypothesis 2
Add advanced tutorials and expert tips for users seeking more challenging content.
Assumption to check: Some users feel tutorials are too simplistic or lack depth.
Validate with people who use this workflow before building.
Hypothesis 3
Incorporate gamification elements like streaks, badges, and daily challenges to enhance user engagement.
Assumption to check: Lack of engagement features can make learning feel monotonous.
Validate with people who use this workflow before building.
Hypothesis 4
Enhance the search functionality with filters and sorting options to streamline content discovery.
Assumption to check: Users report difficulties in finding specific tutorials.
Validate with people who use this workflow before building.
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
React Native
Expo
Zustand
axios
expo-av
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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.
