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.
Index helps small businesses improve customer communication with powerful tools like instant auto-reply, texting shortcuts, customer notes, and more.
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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 Index: Business Phone Number: map the core Business 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 search functionality often leads to irrelevant results.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: In-app purchases can be confusing to navigate.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Some users report app crashes during heavy usage.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: User interface can be cluttered.
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.
Index helps small businesses improve customer communication with powerful tools like instant auto-reply, texting shortcuts, customer notes, and more. GET A DEDICATED BUSINESS PHONE NUMBER Index gives you a local number that you can use alongside your existing business number or as a replacement for it. Your Index Number powers all of your Index communication tools and features. RESPOND TO MISSED BUSINESS CALLS AUTOMATICALLY Turn missed calls into opportunities with Auto-Reply. Index immediately sends a custom, branded text message to keep customer conversations going when you can't pick up the phone. Share hours, important links, and anything else that might help you win new business. HELP CUSTOMERS INSTANTLY WITH TEXTING SHORTCUTS Access shortcuts for interacting with customers right from your text thread using Index’s Texting Toolbar. Create reusable templates for common questions, book appointments, request payment, collect reviews, and more—all with a tap. CAPTURE AND ORGANIZE IMPORTANT CUSTOMER INFORMATION Save important details about your customers easily, and reference them quickly to add a personal touch to every conversation. Organize customers into lists for sharing updates, offers, and more. REACH CUSTOMERS THE WAY THEY PREFER TO BE REACHED 89% of customers prefer texting businesses over any other mode of communication. Index’s suite of simple, text-based features empowers businesses to reach customers on their terms. Index gives you powerful tools to manage your customer interactions with the convenience of text. Download Index today to start your risk-free 7-day trial. Cancel anytime. Note on Subscriptions: Index is a paid service. Subscriptions are automatically billed monthly or annually to your iTunes Account and auto-renew unless you turn off auto-renew at least 24-hours before the end of the current period. Payments are charged to your iTunes account upon confirmation of purchase. You can turn off auto-renew or manage subscriptions in your iTunes & App Store account settings. Cancellations take effect at the end of the active subscription period. Any unused portion of a free trial period (where available) is forfeited when purchasing a subscription. Terms of service: https://www.pinger.com/terms Privacy Policy: https://www.pinger.com/privacy-policy/
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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.