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
Blower
"It blows air!", CNN --- Unlock the new mind-blowing feature on your iPhone and iPad: Blow out candle or lighter flames, let flames dance to the music beat, or control flames with your voice! Blower uses secret hardwa...
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.5
1,363 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'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 Blower: 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
Add more diverse sounds and categories regularly.
Assumption to check: Limited sound selection can lead to user boredom.
Validate with people who use this workflow before building.
Hypothesis 2
Provide clear onboarding for purchases and sound ownership.
Assumption to check: In-app purchases can confuse users if not clearly explained.
Validate with people who use this workflow before building.
Hypothesis 3
Implement gamification elements or challenges to keep users engaged.
Assumption to check: App can be repetitive, leading to decreased engagement.
Validate with people who use this workflow before building.
Hypothesis 4
Ensure high-quality audio files and allow user feedback on sound quality.
Assumption to check: Sound quality may vary, impacting user experience.
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
"It blows air!", CNN --- Unlock the new mind-blowing feature on your iPhone and iPad: Blow out candle or lighter flames, let flames dance to the music beat, or control flames with your voice! Blower uses secret hardware features of your device, check below for the Blower Power. • "Believe it or not, it blows air!" , Gizmodo • Knocked Ellen Degeneres right out of her chair during her TV talkshow! • "a one-of-a-kind application that pushes the iPhone’s functionality and awesomeness even further", krapps.com • Ranked overall #1 in 20+ countries in the App Store • 40+ YouTube movies of users all around the world • "This is both totally stupid and incredibly brilliant", youtube comment by "mambokurtz" Try it yourself and be amazed... Start your Blower and feel the air flowing from the speaker opening. Fun party trick examples: • BLOW mode: blow out candles and lighter flames • BEAT mode: let flames dance to the music beat, or control flames with your voice! • GUN mode: let flames shiver with automatic gun mode • TUNER mode: adjust the blower engine to optimize air flow on your device • Touch the blower rotor: drive it yourself and see the sparks • Birthday iMessage Stickerpack Curious? Watch the blower in action on BlowerApp.com, or search for "iPhone blower" on YouTube. Have fun, Qneo BLOWER POWER For maximum blowing power, remove protective covers/casings that could block the air flow, use maximum audio volume, optimize with the built-in tuner, and ensure no dust has accumulated in your speaker opening. You can verify the cool air flow by holding the speaker opening close to your mouth. When blowing out candles, don't burn your device!
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
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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.
