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.
Leaderboard subscription required.
Free · 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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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 Leaderboard by IBD: map the core Finance 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 for watchlist and insights.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Occasional bugs with stock data updates.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Subscription model can be unclear to new users.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: User engagement drops after initial use.
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.
Leaderboard subscription required. Make your investing simpler and your portfolio stronger. Leaderboard is a premium investing research platform that gives you winning stocks and concrete trading action plans. Our market experts and proven system do the hard part for you. The result: a better portfolio and bigger profits in less time. The team behind Leaderboard engineered a new way to research stocks. Leaderboard combines powerful investing tools—technical and fundamental data, computer algorithms and human insight—into one streamlined experience. And it’s unlike any other investing product because we have a team of market experts to coach you 1-on-1 for no additional charge. Best of all, Leaderboard works everywhere—all of your desktop, tablet and mobile devices—with a single subscription. Get it today and see how much more money you could be making! Leaderboard is the all-in-one investing tool that gives you: • Top-performing stock lists • Complete trading plans written by our team • Free 1-on-1 training with our Product Coaches • A personalized experience with custom alerts and stock lists Leaderboard is free to download. Subscribers get full access to this app as part of their subscription. After the 14 day free trial, your membership will automatically renew each month, and you will be charged $69.99/month through your iTunes account within 24-hours prior to the end of the current cycle. You can turn off auto-renew at any time from your iTunes account settings up until 24-hours before the end of the current period. Your subscription remains active until the end of the period. Try us free for 14 days! If you enjoy your Leaderboard trial, do nothing and your membership will automatically renew every month. Unlimited access for $69.99 per month. Cancel anytime. If you subscribe via iTunes: Payment will be charged to iTunes Account at the confirmation of purchase. Accounts will be charged for renewal within 24-hours prior to the end of the current period. Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. If you have any questions about how the app functions or how to access your subscription on other devices, please contact us at (800) 831-2525 or outside the United States at (310) 448-6600. Privacy Policy: https://www.investors.com/investors-business-daily-privacy-policy/ Terms of Use: https://www.investors.com/home/investors-business-daily-inc-terms-of-use/
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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.