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.
An invoice creation, sending, and tracking tool
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 Tiny Invoice - Invoice Maker: 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 customization options for invoices
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Cluttered user interface
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Inconsistent syncing with client data
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of multi-currency support
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.
An invoice creation, sending, and tracking tool. Tiny Invoice helps you stay on top of your business. “Now it takes me under a minute to create and send an invoice, before I would still be looking for a pen.” Serving various industries for years, Tiny Invoice is ready for yours. PROFESSIONAL INVOICE - 5 customizable professional invoice templates; - Add your company logo and place it anywhere; - A wide range of invoice colors to match your brand theme; - Supports adding detailed business information, including address, contact details, etc. EASY INVOICES & ESTIMATES - Anyone can create and send an invoice in under one minute; - Add clients from your contact list with email, phone number, shipping address, etc; - You can customize by adding or removing modules to make the invoice fit your business needs; - Create estimates for a project and convert them to an invoice with one tap. ADD ITEMS & AUTO CALCULATE TOTALS - Add items manually or by scanning, and it automatically calculates the total based on quantity and unit price; - Supports adding taxes, discounts, shipping, and other fee details, and automatically calculates the final total with one tap; - Supports adding payments and tracking payment status. SMART BUSINESS ACCOUNTING - Record sales reports by day, month, quarter, or year; - Supports recording purchase orders, credit memos, and expenses; - View sales by individual item, profit and loss, and expenses by category. KEEP EVERYTHING ORGANIZED - Track delivery and open status after sending. - Get reminders before the invoice due date and see payment status at a glance. - Enable online payment directly through the invoice for faster collection. - Auto sync invoices and estimates across all your devices with one account. - Share Invoices: Export as PDF or print directly. Share via email, link, iMessage, or fax. WHY TINY INVOICE? RAPID With lots of templates, creating invoices and estimates is far rapid than before. CUSTOMIZABLE On every invoice and estimate you created, all details are customizable. You can even add a signature and company logo onto it. ORGANIZED All created invoices and estimates are well organized and ready for you to check and mark paid. TRUSTWORTHY Tiny Invoice is used by millions of small businesses and organizations for over 13 years. SUBSCRIPTION DETAILS • Weekly and annual subscriptions are available. • Payment will be charged to your iTunes account at confirmation of purchase. • Your subscription will automatically renew unless auto-renew is disabled at least 24 hours before the end of the current subscription period. • Automatic renewals will be charged at the same price you were originally charged for the subscription. • Subscriptions can be managed by going to Account Settings on the App Store after purchase. Terms of Service: https://www.invoicezip.com/termsofservice Privacy Policy: https://www.invoicezip.com/privacypolicy Tiny Invoice is constantly updated with new features. Please write to us before leaving negative reviews, as we can often help with your problem or help you better use the app. If you have any problems or suggestions, please send mail to [email protected], you will get the response and solution in a short time. The content of the screenshots, preview videos, and audio are provided by the following platforms: - Shutterstock: Used with permission from Shutterstock.com (where applicable) - Freepik: Designed by Freepik - iStock: Standard license obtained from iStock
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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.