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
Neutron Audio Recorder
Neutron Audio Recorder is a powerful and versatile audio recording app for mobile devices and PCs
$12.99 · In-app purchases
PRICE
$12.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.8
4 ratings · Top 50%
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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Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Neutron Audio Recorder: 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
Offer advanced editing tools and effects.
Assumption to check: Limited editing features compared to professional audio apps
Validate with people who use this workflow before building.
Hypothesis 2
Implement background recording functionality.
Assumption to check: No background recording support
Validate with people who use this workflow before building.
Hypothesis 3
Use adaptive bitrate streaming for better audio quality.
Assumption to check: Inconsistent playback quality
Validate with people who use this workflow before building.
Hypothesis 4
Integrate social sharing features for recorded audio.
Assumption to check: Lack of 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
Neutron Audio Recorder is a powerful and versatile audio recording app for mobile devices and PCs. It is a comprehensive recording solution for users who demand high-fidelity audio and advanced control over the recordings. Recording Features: * High-Quality Audio: Utilizes an audiophile-grade 32/64-bit engine Neutron HiFi™ for professional-sounding recordings, well-known to Neutron Music Player users. * Silence Detection: Saves storage space by skipping quiet sections during recording. * Advanced Audio Controls: - Parametric Equalizer (up to 60 bands) for fine-tuning audio balance. - Customizable Filters for sound correction. - Automatic Gain Control (AGC) to boost faint or distant sounds. - Optional Resampling to reduce file size without sacrificing quality (ideal for voice recordings). * Multiple Recording Modes: Choose between high-resolution lossless formats (WAV, FLAC) for uncompressed audio or compressed formats (OGG/Vorbis, MP3, SPEEX, WAV-ADPCM) to save space. Organization and Playback: * Media Library: Organize recordings for easy access and create playlists. * Visual Feedback: View real-time audio levels with Spectrum, RMS, and Waveform analyzers. Storage and Backup: * Flexible Storage Options: Save recordings locally on your device's storage, an external SD card, or stream directly to network storage (SMB or SFTP) for real-time backup. * Tag Editing: Add labels to recordings for better organization. Specification: * Neutron HiFi™ 32/64-bit hi-res audio engine (HD audio) * OS and platform independent encoding and audio processing * Bit-perfect recording * Signal monitoring mode * Audio formats: WAV (PCM, ADPCM, A-Law, U-Law), FLAC, OGG/Vorbis, Speex, MP3 * Playlists: M3U * Metadata/tags editing * Sharing recorded file with other installed apps * Recording to the internal storage or external SD * Recording to the network storage: - SMB/CIFS network device (NAS or PC, Samba shares) - SFTP (over SSH) server * Output recordings to Chromecast or UPnP/DLNA audio/speaker device * Device local music library management via the internal FTP server * DSP effects: - Silence Detector (skip silence during recording or playback) - Automatic Gain Correction (sense distant and quite sounds) - Configurable digital Filter - Parametric Equalizer (4-60 band, fully configurable: type, frequency, Q, gain) - Compressor / Limiter (compression of dynamic range) - Dithering (minimize quantization) * Profiles for settings management * High quality real-time optional resampling (Quality and Audiophile modes) * Real-time Spectrum, RMS and Waveform analyzers * Playback modes: Shuffle, Loop, Single Track, Sequential, Queue * Playlist management * Media library grouping by: album, artist, genre, year, folder * Bookmarks * Folder mode * Timers: stop, start * Supports many interface languages Support: Please, report bugs directly by e-mail or via the forum. Forum: https://forum.neutroncode.com About Neutron HiFi™: https://neutronhifi.com Follow us on X: https://x.com/neutroncode https://facebook.com/neutroncode
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.
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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.
