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.
Kora is a class builder for Lagree and Pilates instructors
$24.99
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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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.
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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for Kora Class Builder: map the core Health & Fitness 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 customization options for workouts
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Lack of social features
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: High price point for access
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Minimal data tracking
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.
Kora is a class builder for Lagree and Pilates instructors. Build your routine in minutes. Run it hands-free from your Apple Watch. Generic timer apps weren't designed for the way you teach. Kora is. BUILD IN MINUTES, NOT HOURS Create exercises, set durations, stack variations, and add springs. Drag to reorder. Duplicate what works. See your total class time update as you build. SAVE YOUR BEST MOVES Save exercises to your personal library and pull them into any routine instantly. Build once. Reuse forever. STAY PRESENT DURING CLASS The player shows what's running, what's next, and how long is left - right on your wrist. Lock the screen to prevent accidental taps. Your phone stays in your pocket. BUILT FOR YOUR WORKFLOW Color-code moves by body part. Select and manage multiple exercises at once. Collapse variation details when you don't need them. Search your routines in seconds. BUILT FOR HOW INSTRUCTORS ACTUALLY WORK — Prep takes minutes, not an hour — Saved moves travel between routines instantly — Run classes on your Apple Watch — One purchase, no subscriptions, updates included THE STORY BEHIND KORA I built this after watching my partner, a Lagree instructor, spend close to an hour every week rebuilding routines in a timer app. Retyping the same moves. Losing sequences. Fighting the tool instead of focusing on the class. Kora was built to fix that. One tool, made specifically for Lagree and Pilates instructors.
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.