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
Saws From Sunset
Saws From Sunset turns your camera into a musical instrument.
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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 included15 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 Saws From Sunset: map the core Music 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 tailored playlists based on listening history.
Assumption to check: Lack of personalization features for users
Validate with people who use this workflow before building.
Hypothesis 2
Enhance offline downloads for all songs.
Assumption to check: Limited offline capabilities
Validate with people who use this workflow before building.
Hypothesis 3
Add advanced filtering and recommendation algorithms.
Assumption to check: Poor song discovery options
Validate with people who use this workflow before building.
Hypothesis 4
Integrate social sharing options for users to share music.
Assumption to check: No social sharing features
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
Saws From Sunset turns your camera into a musical instrument. Point it at anything: a sunset, a painting, a neon sign, your cat, and the colors you see become the notes you hear. HOW IT WORKS The crosshair samples color from the live camera feed and maps it to pitch in real time. Reds are low, blues are high. Move the camera and the music moves with you. INSTRUMENTS & MODES • Stargazer — soft sine voices drift through your scale, drawn from random pixels in the frame • Fat Reese — a deep, detuned bass that locks to the harmony • Heavens Arp — a shimmering bell arpeggiator in the upper register • The Lumens — animated characters that play melodies near lights and shadows in the frame • Catophone / Doggophone — pitch-shifted meows and barks • Color Memory Trails — glowing light trails that echo your notes • Chromatic Magic — slow ambient chords with chromatic voice leading SOUND DESIGN Full ADSR envelope, reverb, delay, chorus, shimmer, bitcrusher, tape saturation, and LFO routable to vibrato, filter, or tremolo. Supports scales, tuning systems, and microtonal EDO modes. PRESETS Save and share your own presets, or load from the built-in factory bank to get started instantly.
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
Zustand
react-navigation
expo-av
react-native-gesture-handler
BUILD KIT DIFFICULTY
Advanced
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.
