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
Writing Prompts
Writing.Com presents "Writing Prompts", the iPhone app with an endless supply of creative inspiration for writers!
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.4
28 ratings · Below Average
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.
Build your own version
Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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Combine features and design from your favorite apps.
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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 included17 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 Writing Prompts: map the core Productivity 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
Implement a daily challenge feature to keep content fresh.
Assumption to check: Limited prompt variety can lead to user disengagement.
Validate with people who use this workflow before building.
Hypothesis 2
Streamline the design for better usability.
Assumption to check: User interface can feel cluttered.
Validate with people who use this workflow before building.
Hypothesis 3
Add options for sharing prompts on social media.
Assumption to check: Lack of social sharing features.
Validate with people who use this workflow before building.
Hypothesis 4
Introduce analytics to tailor prompts based on user interests.
Assumption to check: No analytics for tracking user preferences.
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
Writing.Com presents "Writing Prompts", the iPhone app with an endless supply of creative inspiration for writers! -->> Search iTunes for "A+ Writing Prompts", our an all inclusive, bundled app... perfect for the classroom! -->> Are you an artist? Search iTunes for "Art Prompts" - Our app just for you! Our writing prompt generators use current events, scene elements, words, sketches, colors, genres and writing types, unleashing endless random bits of fantasy to fuel your muse. Plus, we've included our database of 600 creative writing prompts so you've got them right at your finger tips, online or off! Shake your device or swipe across the screen to change prompts. Add the prompts you like best to your favorites and revisit them at any time. ** Five prompt generators: News, Scenes, Sketches, Texts and Words. Store your favorite prompts into the "Fav's" tab by tapping the favorite star on any prompt. ** Includes 400 scene elements, 450 words, 60 sketches, 10 colors, 80+ genres and more -- all of which generate millions and millions of unique prompts. Add up to 4 additional packs of prompts through in-app purchase. Each pack includes hundreds of new scene elements, 100 sketches and more. Add them all you'll have literally billions of possible prompts. ** Includes over 800 text prompts. This assortment of phrases, quotes, writing exercises, story openers and more will help inspire you to write. ** Store an unlimited number of prompts in your "Favorite Prompts". Quickly swipe back and forth to page through them. ** Prompts in portrait and landscape orientations. ** Multitasking support! Switch to another app and back, Writing Prompts resumes right to where you left off. ** Swipe left-to-right to go back to previous prompt! (There's a setting to flip this right-to-left or turn swiping off.) Sure to help you fight writer's block and get your creativity flowing, your inner writer will love this tool. It's the writing help you've been missing. Write on! http://www.Writing.Com/
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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
React Native
Expo
Axios
React Navigation
AsyncStorage
Shadcn/UI
BUILD KIT DIFFICULTY
Starter
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.
