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.
With the Vanguard app, we’ve made it easier than ever to invest, save, and move your money from the comfort of your mobile device
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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 Vanguard: Save, Invest, Retire: 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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Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
With the Vanguard app, we’ve made it easier than ever to invest, save, and move your money from the comfort of your mobile device. Take control of your finances on the go! For over 50 years, Vanguard has been a trusted name for its low cost and investor-owned structure. Now, you can take our award-winning financial services with you anywhere. Security The Vanguard app uses a comprehensive suite of security tools to keep your account safe, including biometric login, multi-factor authentication, passkeys and physical security keys, and modern encryption measures, among others. You can view recommended actions you can take to boost your account’s security in the app’s security center, making your time in the app safe, secure, and easy to use. Always evolving The Vanguard app is built with you and your needs in mind. We roll out new updates every couple of weeks, but if there’s something you want us to build, let us know via the Feedback option in the Profile tab. Investing The core of Vanguard’s philosophy is diversified, well-balanced investing; tailored for whatever goals you set. In the Vanguard app, you can: • Trade mutual funds, ETFs (including crypto ETFs), and stocks • Access an overview of your accounts to check your total assets and balances • Dive deeper to track your account performance, cost basis details, and review your transaction history Advice Investing doesn’t need to be a guessing game. Vanguard advice services are here to cut through the noise and help you make the right choices for your portfolio. Use the Vanguard app to: • Set and achieve your financial goals with Vanguard Digital Advisor • Get reminders for appointments with your Vanguard financial advisor • Read Vanguard perspectives articles for expert commentary on investing Retirement Whether you’re just starting to save or getting ready to retire, Vanguard can help you prepare for a healthy, happy retirement. Here’s how the Vanguard app can help: • Open and manage an IRA (including Roth IRAs) to start saving for the future • Track the performance of your Employer-sponsored retirement plan • Roll over previous 401(k) accounts into your Vanguard account Some features may not be available for employer-sponsored plans. Tax forms Getting ready for tax season? You can view previous years’ tax forms and get notifications when the current year’s forms are ready to review in the Vanguard app. Learning about finance You can read educational finance articles and expert Vanguard Perspectives on the economy, research new investments, and create a watchlist in the Explore tab. Flagship Certain accounts qualify for Flagship, our next-level investment service. Qualifying clients receive personalized guidance, priority service, and more value from everyday use. With dedicated advisors and a suite of enhanced benefits, Flagship evolves alongside your needs and helps you get more from your money. Whether you’re looking into a new index fund, setting new goals to save for your future, or just need to reference your tax forms while away, the Vanguard app makes all your financial needs simple, fast, and safe. Disclosures Vanguard funds not held in a brokerage account are held by The Vanguard Group, Inc., and are not protected by SIPC. Brokerage assets are held by Vanguard Brokerage Services, a division of Vanguard Marketing Corporation, member FINRA and SIPC. All investing involves risk. Trading in cryptocurrency ETFs may involve significant risk and may not be suitable for everyone. Vanguard is owned by its funds, which are owned by Vanguard's fund shareholders. Images are for illustrative purposes only. iPhone and iPad are trademarks of Apple Inc., registered in the U.S. and other countries © 2026 The Vanguard Group, Inc. All rights reserved. Vanguard Marketing Corporation, Distributor of the Vanguard Funds
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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: Lack of personalized investment advice
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Complex user interface for new users
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Limited account linking options
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Inadequate customer support options
Validate with people who use this workflow before building.
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.