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.
'Abstract Clock Tracks' is an app that creates unique, abstract chord progressions by simply pressing a button
$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.
Kit ready. Verify your email to download it.
Generating… usually about a minute.
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.
JavaScript is required to complete mailbox verification.
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for Abstract Clock Tracks: map the core Music workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
Preview ready. Verify your email to reveal and copy the full prompt.
JavaScript is required to complete mailbox verification. Return to this prompt preview.
Affiliate link: CloneChart may earn a commission at no extra cost
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 track selection compared to larger music libraries.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Lack of social sharing features.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: No offline playback for tracks.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: User interface can feel cluttered with too many elements.
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.
'Abstract Clock Tracks' is an app that creates unique, abstract chord progressions by simply pressing a button. The app also generates riffs and beats via preprogrammed rhythmic patterns. Backing tracks are then created and can be used to work on soloing/improvising, write melodies, compose, or whatever you like. The app creates progressions consisting of 8 note groups made up of 3 notes each using all 12 musical notes. Select measures of 4/4 at 133bpm, 3/4 at 100 bpm, or 5/4 at 166bpm. Each time signature/tempo has 7 different drum beats to choose from, and a click track. You can also create a progression from scratch, depending on what tonalities you want to hear and work with. To get a better idea of how to use the app, watch the tutorial at www.ronjarzombek.com/apptutorials.html So if you're just tired of using the same old progressions that you've heard before and are looking for some new and creative progressions to work with, or just want to brush up on your knowledge of theory, and what scales work over certain sets of notes, this might be the app for you!... ronjarzombek.com ronjarzombek.com/ACT.html ronjarzombek.com/rjapps.html
Written user reviews are not shown here. Check current App Store reviews >
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.