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.
Gusto simplifies payroll, paycheck management, time tracking, expense reimbursement, and savings for small businesses—making it easier to manage tasks on the go with powerful tools for employers, employees, and contractors
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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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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 Gusto Mobile: 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 of paystub details
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Synchronization issues with bank accounts
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Complex navigation for new users
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Inconsistent notifications
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.
Gusto simplifies payroll, paycheck management, time tracking, expense reimbursement, and savings for small businesses—making it easier to manage tasks on the go with powerful tools for employers, employees, and contractors. For business owners and payroll administrators: Payroll: Easily run regular or off-cycle payroll on the go. Time: Review and approve your team's hours and time off. Team: View and manage critical team information in one place. Onboarding: Add and onboard team members directly from the app. Notifications: Set up notifications and permissions to suit your business. Expenses: Review and approve expense reimbursements on the go.³ For employees: Paychecks: Easily manage paychecks and route money to different bank accounts. Early Pay: Receive paychecks up to 2 days early¹ and access advances between paydays with Gusto Wallet.² Benefits: Manage your benefits or sign up for special offers. Documents: Access and sign important documents. Time: Track your hours and request time off. Expenses: Snap receipts and submit expenses from anywhere. For US contractors: Pay: View payment history, download pay statements, and route money to different bank accounts. Time: Clock in and out, review tracked hours, make updates as needed, and check schedules. Scheduling: View personal and team schedules, and update availability. Documents: Access and sign important documents. ¹ With a Gusto spending account, your payment may be processed up to 2 days early. Timing depends on when your employer submits the payment file. The Gusto Spending account is issued by nbkc bank, Member FDIC. Gusto is a payroll services company, not a bank. Banking services provided by nbkc bank, Member FDIC. ² All Advances are originated by Pathward®, N.A. All Advances are subject to eligibility criteria and application review. Per pay period advance amounts may vary and are based on factors including repayment history. Terms and conditions apply. On-Demand Pay provided by Clair. Clair is a financial services company, not a bank. ³ Available with Gusto Plus and Gusto Premium only
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.