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
Shortn: short viral video hits
Fast
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.3
3,203 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's included19 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 Shortn: short viral video hits: map the core Entertainment 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 smarter algorithm to provide diverse and personalized video recommendations.
Assumption to check: Limited content discovery algorithms leading to repetitive recommendations.
Validate with people who use this workflow before building.
Hypothesis 2
Create a more user-friendly interface for managing watch history and favorites.
Assumption to check: Users find it difficult to manage their watch history and favorite videos.
Validate with people who use this workflow before building.
Hypothesis 3
Offer an ad-free subscription model that enhances the viewing experience.
Assumption to check: Ads can be intrusive and detract from user experience.
Validate with people who use this workflow before building.
Hypothesis 4
Integrate social sharing options to allow users to easily share videos on social media platforms.
Assumption to check: Lack of social features for sharing videos easily.
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
Fast. Funny. Addictive. Shortn helps you scroll away boredom in 30 seconds or less. Whether you're into pranks, weird moments, memes, or unexpected internet brilliance, Shortn learns what you like and delivers it. And now, your scroll has a location. With the Map, you can explore what’s trending nearby like viral videos, fresh memes and real moments from people around you. Drop your own clips right where they happened or just see what’s blowing up in your area. Prefer to keep it private? Your location stays hidden until you decide to share. You’re always in control. The feed? Always spot-on. The vibe? Just right: - That video that made you spit out your coffee - Is she eating soap? - The cat that accidentally started a trend - The 6-second prank you immediately shared - There's no pressure to perform. No polished aesthetics. Just good mood, scrolls, and the occasional “what did I just watch?” With powerful algorithms under the hood, Shortn is easy to navigate yet too addictive to stop: - Personalized feed that knows what hits - Fresh videos daily (new chaos, always) - Filters, sounds & effects to post clips and start trends - Custom profile that’s all you - Instant sharing to wherever you hang out Map it. Scroll it. Laugh at it. Download Shortn now & regret nothing. Need help? We gotchu at [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
React Native
Expo
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react-navigation
expo-video
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.
