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.
Inter's banking super app helps you simplify your financial life with a full range of banking solutions—all in one app
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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 Inter – Banking & Investing: 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 investment options compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: User interface can be overwhelming for new users
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Inconsistent transaction categorization
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Slow customer support response times
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.
Inter's banking super app helps you simplify your financial life with a full range of banking solutions—all in one app. Spend, invest in stocks, save with gift cards, and send money abroad directly from your phone. Take control of your finances in a modern way and access services designed for your lifestyle. Why choose Inter? - Trusted by millions: More than 40 million people use Inter. - Your money is FDIC insured. - Gift cards with cashback: Explore offers and deals from top brands. - Physical & virtual debit card - Inter Passport Credit Card - Invest in stocks & ETFs from as little as $5. - Global money transfers : send money to over 60 countries, including Mexico, Colombia, Brazil, El Salvador, Guatemala, Honduras, Ecuador. And more: - 24/7 multilingual support: English, Spanish, and Portuguese. - Inter LOOP rewards program: Earn points to exchange for gift cards and other perks. - Get eSIMS for your mobile data needs. Open your digital account and access all services in one place. DISCLAIMER: INTER & CO PAYMENTS, INC., doing business as Inter (“Inter”), is a financial technology company, a registered money services business (MSB) and a licensed money transmitter, not a bank (NMLS ID #907330). Massachusetts Foreign Transmittal Agency (License #FT114374-100). Rhode Island Currency Transmitter (License # 20203960CT). Click here to access our NMLS licenses. Banking services are provided by Community Federal Savings Bank (“CFSB”), Member FDIC and deposits are held by CFSB and Wells Fargo Bank, Members FDIC. Inter is not a depository institution, deposits held at CFSB and Wells Fargo are not eligible for FDIC insurance. The Inter US Checking account is provided by Continental Bank, Member FDIC. Inter US Checking accounts are FDIC-insured up to US$250,000. Inter US Checking account funds are eligible for FDIC insurance up to the allowable limit through Continental Bank, Member FDIC, and other program banks. Coverage is subject to aggregation of all of each account holder’s funds held on deposit at Continental Bank or at each of its program banks. Funds generated through Inter’s payment processing services are generally available in the Inter US Checking account balance immediately after a payment is processed. Fund availability times may vary due to technical issues. Inter is not a bank. Inter US Checking accounts do not provide monthly paper statements and do not issue physical paper checks. Inter US Checking accounts are not interest-bearing accounts. FDIC deposit insurance coverage only protects against the failure of an FDIC-insured deposit institution. If you have an Inter US Checking account, up to US$250,000 of your balance may be covered by FDIC insurance on a pass through basis through Continental Bank, Member FDIC, subject to aggregation of the account holder’s funds held at Continental Bank and if certain conditions have been met. Mortgage services are provided by Inter US Finance, LLC (NMLS ID #1161874), an affiliate of Inter & Co Payments, Inc. Securities brokerage services are provided by Inter&Co Securities LLC, Member FINRA/SIPC , an affiliate of Inter & Co Payments, Inc. and a wholly-owned subsidiary of Inter&Co US Holding. View important information and disclosures here. If you have any questions or concerns regarding any transaction, please write to us at 501 Brickell Key Drive, Suite 202, Miami, FL 33131, or by email at [email protected] or by calling us at 1-888-305-7264. The Inter US Mastercard® Credit Card is issued by Continental Bank, Member FDIC, pursuant to alicense from Mastercard International Incorporated and may be used wherever Mastercard debit is accepted. The Inter US Mastercard® Credit Card is issued by Continental Bank, Member FDIC, pursuant to a license from Mastercard International Incorporated, and may be used wherever Mastercard is accepted. For more information about the Inter US Mastercard credit and debit cards please see the applicable cardholder agreements.
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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.