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.
Similar to the human cochlea where the different frequencies are split-up and analyzed, The Snail for iOS uses a spiral grid to visualize root notes and overtones of any incoming sound with utmost precision
$1.99 · 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.
First kit free with a verified email
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 The Snail: 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 sound sharing options
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Inconsistent audio playback quality
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Complex navigation structure
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of community features
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.
Similar to the human cochlea where the different frequencies are split-up and analyzed, The Snail for iOS uses a spiral grid to visualize root notes and overtones of any incoming sound with utmost precision. The Snail is based on recently developed technology making instrument tuning easy and audio analysis music-oriented and fun to watch. Tune any instrument with utmost precision Version 2 offers an additional guitar tuning mode that is available in the tuning view. Just tap on a dedicated string name, play a note and adjust the guitar tuning accordingly. Another major improvement is the new split window mode. Whenever you do any adjustments to parameters you now see how the edits affect the visualization in the upper section. This works in both visualization modes. One mode is the snail grid, a complete musical overview of the audio spectrum. The other one, the tuner view, is especially designed to focus on the root note for tuning purposes. In both views there is a sine tuning oscillator available which is controlled simply by touching the desired note on the iPhone display. There are a lot of customizable parameters. No problem if you would like to tune transposing instruments or if you need a tuning reference other than 440 Hz. Patented technology The well-known IRCAM institute for acoustic and music research in Paris is responsible for the new technology of detection and visualization. It is a patented invention by Thomas Hélie, CNRS researcher at the Sciences and Technologies for Music and Sound (STMS) Laboratory (IRCAM/CNRS/Sorbonne Université). The Snail is also available for macOS and Windows, as stand-alone app or plug-in (VST3/AU/AAX), distributed by Plugivery. Key features • Precise audio analysis and instrument tuning in two modes. • Snail view for a sophisticated visual representation of root note and overtone structures. • Tuner view to tune instruments and to control pitches of voices and other sources. • Fast access guitar tuning (GT) mode. • Split window settings menu. • Visual gain and mic gain controllers. • Switchable auto detection. • Touch sine tuning oscillator. • 2 color modes: coherency index and magnitude. • Adjustable grid range (octaves). • Setup for transposing instruments. • Many customizable parameters like tuning reference, frequency tracking and audio window size.
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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.