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
Pocket Whip: Original Whip App
get ready to whip it good with the big bang theory whip app, the one and only sheldon whip sound app featured on tv’s funniest show
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
115,056 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 included16 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 Pocket Whip: Original Whip App: 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
Include a wider variety of whip sounds and customization options.
Assumption to check: Limited sound options compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Optimize sound loading to enhance performance.
Assumption to check: Occasional lag in sound playback
Validate with people who use this workflow before building.
Hypothesis 3
Create a cohesive design language throughout the app.
Assumption to check: Inconsistent user interface design
Validate with people who use this workflow before building.
Hypothesis 4
Add social sharing features for created sounds and effects.
Assumption to check: Limited sharing options
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
get ready to whip it good with the big bang theory whip app, the one and only sheldon whip sound app featured on tv’s funniest show. transform your iphone into a virtual whip with motion-activated sound effects. swing your device side-to-side for a thrilling woosh or flick your wrist to unleash an iconic crack! master whip sound effects just like sheldon and bring laughter everywhere you go. highlights • as featured on tv: relive the hilarity of the big bang theory with the same whip sound app sheldon used for epic pranks and laughs. • enjoy three free whips: jump into the fun with three classic sounds included: • indiana jones whip • bull whip • flash whip unlock more with the unleashed whip pack expand your whip collection and take the fun to the next level with premium sound effects, including: • longeing • romal • riding • snake • signal • cat-o-nine tails • chain • flash cat • new laser whip! top features of the pocket whip app • accelerometer-powered fun: swing your phone to activate realistic motion-triggered sounds. • customizable settings: toggle sound effects or theme music to match your preferences. • optimized for all devices: enjoy low battery usage and compatibility with the latest iphone models. • ad-free option: upgrade to remove ads for uninterrupted entertainment. how to use 1. shake or whip your phone to trigger the sound effects. 2. turn up your volume for maximum impact. want more fun? connect your phone to speakers! 3. no sound? check the mute switch and ensure your volume is turned up. whether you’re after realistic whip crack sounds, laugh-out-loud comedy sound effects, or the ultimate prank app, the whip sound app is your one-stop destination for whip-inspired fun. from the indiana jones whip to the cat-o-nine tails, this app is also perfect for fans of soundboard apps, prank apps, and virtual whip simulators. download now and whip like a pro!
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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.
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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.
