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
DarkShort:Dark&Mystery Stories
DarkShort is the app for people who love dark stories.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.4
1,038 ratings · Top 30%
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/
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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 DarkShort:Dark&Mystery Stories: map the core News 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
DarkShort is the app for people who love dark stories. Discover a growing collection of dark tales, intriguing mysteries and legends filled with suspense and unexpected twists. Each story is told through short video episodes and immersive podcast-style narration, designed to be watched or listened to directly on your phone. Every story unfolds piece by piece, revealing new details and taking you beyond the ordinary, one episode at a time. What you’ll find on DarkShort: • Dark stories, mystery and suspense • Short video episodes made for mobile • Immersive podcast-style narration • Exclusive DarkShort Originals • New stories added regularly Whether you’re relaxing at home or just have a few minutes to spare, there’s always time for one more story. Open DarkShort and discover what happens next. Privacy Policy:https://tally.so/r/aQ9RbB Terms of Service: https://tally.so/r/aQ9RbB
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
Enhance with user-generated content and community features
Assumption to check: Limited content variety in news apps
Validate with people who use this workflow before building.
Hypothesis 2
Implement personalized topic recommendations
Assumption to check: Difficult navigation for discovering topics
Validate with people who use this workflow before building.
Hypothesis 3
Add offline article saving and reading capabilities
Assumption to check: Lack of offline reading support
Validate with people who use this workflow before building.
Hypothesis 4
Implement smart push notifications for breaking news
Assumption to check: Poor engagement with notifications
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
Supabase
Zustand
react-native-gesture-handler
react-native-reanimated
BUILD KIT DIFFICULTY
Expert
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.
