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.
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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 JustFlip: Cut Back on Habits: map the core Lifestyle 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: Expensive subscription
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Missing features
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Poor performance
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.
You don't need another streak to protect. JustFlip helps you cut back on everyday habits — scrolling, caffeine, snacks, takeout — by taking over the hardest part: the moment-to-moment decision. Set a goal once. When an urge shows up, check your taper coin. YES means it fits your plan — enjoy it, no guilt. NO gives you a pause and two honest choices: hold off, or log that you did it anyway. Either answer is fine. That's the point. Your first week asks for nothing. Change no habits — just tap LOG when an urge hits. Calibration does not approve or deny anything; it learns your baseline. By the time the taper starts, the plan is fitted to your real life, not a guess. That honest log matters. One override is data, not a broken streak. JustFlip keeps the plan grounded in what actually happened and adjusts pace from real days. Use JustFlip to: - Create separate taper coins for different habits - Set a target, timeline, pace, and cooldown - Check the coin in the moment instead of negotiating with yourself - Track urges, actions, holds, and overrides without streak pressure - Compare observed urges and actions over time JustFlip is intended for everyday habits and personal self-management. It is not medical advice, diagnosis, treatment, or crisis support. If changing a habit could cause withdrawal or affect your health or safety, consult a qualified healthcare professional first. Core habit data is designed to stay on your device. User-initiated support reports and configured crash diagnostics are handled as described in the Privacy Policy.
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.