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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$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.
Your first Build Kit is free with a verified email.
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.
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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.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Build momentum one day at a time. Momentum is a flexible habit, goal, challenge, and personal progress tracker designed to help you focus on what matters and understand how your efforts develop over time. CREATE YOUR OWN SYSTEM • Build customizable habits and goals • Track checkmarks, quantities, time, milestones, reading progress, and more • Choose specific days, schedules, targets, and measurement styles • Connect habits with larger goals • Use on-device planning tools to create and refine a plan UNDERSTAND YOUR PROGRESS • Review daily, weekly, monthly, yearly, and all-time results • Compare current performance with previous periods • Explore personal bests, trends, cumulative totals, and tailored insights • View interactive charts designed around each type of activity PRIVATE CHALLENGES Create invitation-only challenges for family and friends. Hosts can customize targets, schedules, participant limits, rankings, rewards, and privacy settings. Invitees review the challenge before joining. APPLE HEALTH With your permission, Momentum can display supported Apple Health information such as steps, walking and running distance, exercise minutes, blood pressure, weight, VO2 max, and sleep. Apple Health access is optional, and core tracking features work without it. SCRIPTURE STUDY Create structured scripture reading plans, track chapter progress, follow daily pacing, and explore study resources. PRIVACY BY DESIGN Core habits and goals are stored privately on your device. Shared Challenges require Sign in with Apple. Momentum does not send personal information to a third-party AI service. Momentum provides general educational and wellness information and is not intended to diagnose, treat, cure, or prevent any medical condition. Some Challenge hosting features require in-app purchases.
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.
Not assessed in a Build Kit yet.
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.