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
Ova Ambient Synthesizer
Ova Synth makes ambient music intuitive and playful.
$3.99 · In-app purchases
PRICE
$3.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
7 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.
Build your own version
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 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 Ova Ambient Synthesizer: 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
Provide a wider range of sound effects and customization settings.
Assumption to check: Limited sound customization options
Validate with people who use this workflow before building.
Hypothesis 2
Allow users to collaborate on tracks in real-time.
Assumption to check: No collaboration features
Validate with people who use this workflow before building.
Hypothesis 3
Simplify sharing tracks to social media and other platforms.
Assumption to check: Difficult sharing options
Validate with people who use this workflow before building.
Hypothesis 4
Implement a guided tutorial for first-time users.
Assumption to check: High learning curve for new users
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
Ova Synth makes ambient music intuitive and playful. Instead of a piano keyboard, it gives you a hexagonal field where each touch is a unique musical gesture. Play by Touch or Physics - Touch the center of a hexagon for soft tones, the edges for brighter ones. - Control multiple parameters at once: - Distance = volume - Horizontal = panning - Vertical = pitch bend - Angle = wavetable morphing - Or add bouncing physics balls that trigger notes automatically, creating evolving, never-repeating patterns. - Change the hexagonal grid to one of the 15 algorithmic layouts. Built for Atmosphere - Up to 10 voices with evolving wavetable oscillators - Long envelopes for smooth fades (up to 30s) - Resonant filter that can sing on its own - Shared lush reverb for cohesive space Flexible & Expressive - Works with all major and world scales - Full MIDI and MPE input/output support - Send your touch gestures as MIDI CC to control external instruments - AUv3 plugin for GarageBand, Logic Pro for iPad, AUM, Cubasis, and more - Adaptive interface fits any plugin window Whether you let the balls wander into generative soundscapes or perform by touch, Ova Synth balances intentional performance with organic discovery. Perfect for meditation music, ambient composition, or just exploring beautiful evolving sounds.
Written user reviews are not shown here. Check current App Store reviews >
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
FastAPI
react-navigation
formik
expo-av
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.
