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.
• Exospheric stereo reverb with ultra low latency pitch shifting
$6.99 · In-app purchases
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.
A product spec, screen plans, and build steps for your coding agent.
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Combine features and design from your favorite apps.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for FAC Alteza: 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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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
Assumption to check: Limited offline functionality for music playback
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Inconsistent audio quality across different tracks
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Limited social sharing features
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No personalized recommendations
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
• Exospheric stereo reverb with ultra low latency pitch shifting • Amazingly lush, dreamy and beautiful • Shimmer kind effect, harmonizer • Unique feedback processor and fine tuning of the All-Pass delays • High-pass filter and stereo width input controls, separate Dry/Wet outputs • Sidechain input to duck the reverb • Multiple outputs, extra output bus to route the feedback signal to your own fxs • Advanced Responsive Design, portrait and landscape views • iOS Audio Unit V3 - Universal (iPad/iPhone) Designed for ethereal lush sound textures and dreamy space reflection, FAC Alteza is the perfect solution to bring your instruments to heaven in no time. Thanks to a powerful feedback section containing, inter alia, two pitch shifters, the unit is able to deliver the very typical "Shimmer" sound kind effect very much prized by musicians that are making ambient music, or any kind of music that needs to be carried by a fabulous angelic evolving choir section. FAC Alteza is definitely not "another shimmer reverb..." effect because it comes with additional parameters that make it very versatile. A particular attention to each part of the signal path was necessary to reach this level of high-end quality. Here some features that make FAC Alteza an outstanding unit: • the input signal is not monoized by default, a knob allows to control the width of the input stereo image before reaching the reverb • the topology of the effect, based upon a series of All-Pass delays, allows to control the intrasec characteristics of the reverberation • the number of All-Pass delays per stage and the echo density are alterable in the main section and in the feedback section • two ultra low latency pitch shifters deliver progressive pitch-shifting of the reverberation tail or the input signal • the feedback section contains a blend knob to control how much of the original signal is mixed with the feedback reverb • the wet signal can be ducked by an external signal provided by the host - AuV3 and Standalone App - To use the sidechain and/or to output the additional feedback signal, you need a host able to provide to the AuV3 an input bus and an additional output bus. The documentation is available at fredantoncorvest.com/FAC_Alteza.html
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Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.