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.
Loan Payment Calculator with PMI (Private Mortgage Insurance factor)
$0.99 · 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 Loan Calc-Lite: 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 functionality for complex loan scenarios.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: User interface could be more engaging.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of data export features.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No support for multiple currencies.
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.
Loan Payment Calculator with PMI (Private Mortgage Insurance factor) This loan calculator app will help you determine the monthly loan payments. Just enter the amount, term, and interest rate in the fields, and it’s done. Mortgage Loan Calculator free app calculates all the loans in no time. This calculator can be used for a mortgage loan or any other fixed loan types. This innovative idea is from Jayesh Khatri, CPA, Realtor, Loan Officer, who aimed to provide seamless and efficient loan calculation facilities throughout the world. He and his team dedicatedly work on this project to make every loan calculation Quick & Easy with the least amount of key strokes. The Loan Payment Calculator calculates four most common loan types: Conventional, FHA, VA, and USDA. It is specially developed for Home Buyers, Realtors, and Mortgage Brokers to calculate the loan easily. The Loan Payment Calculator offers faster and straightforward functionality. Since it is on one screen feature, it saves time and gets the accurate calculation in seconds. The Loan Calculator app is available for iPhone and iPads. Features of the application: 1. Simple to use: Instead of putting the 4 major loan types like Conventional, FHA, VA & USDA on various screens, you can stick to a single tab as we have set them all on one screen. This also has a unique feature in which when you make an entry in one loan, entries are made in all other 3 loan types atomically. 2. Intuitive: It is a user-centric application which is designed from the user’s perspective in order to give all the features that the user wants. SAVE, RETRIEVE, TEXT, & EMAIL. 3. Very Quick: It is a fast & reliable app. It calculates four types of loans i.e., Conventional, FHA, VA & USDA, without switching screens or pages or re-entering numbers. 4.Original Designs: This application design specifically for professionals. It offers more options and quick calculations, time saver for future reference, retrieval to find out which is a better option, TEXT or EMAIL to your client instantly (available only in Pro version), & much more. Home Loan Calculator for Realtor's application has four versions: 1. LITE VERSION: It has all features except the Text and Email and adding customer info. It is an initial version. 2. PRO VERSION: It has everything in it like the lite version & has some additional features such as PMI Editable fields, no ads, etc. 3. AGENT BRANDED APP: We create the Pro version app with additional features in YOUR NAME in the App Store. Its other features include Pre-Qual form entry and Pre-Qual PDF letter, DAILY LOAN RATES and more 4. COMPANY BRANDED APP: This is the best version since every email/text sent to clients is collected by the company’s central email system. This version includes everything like licensing to companies to market the app as their app and let their agents or loan officers use it as their own. Agent Branded version features & benefits: 1. Your Profile: You can easily set up your info in the profile so that all communication and the App Header show your Picture, Name & Phone number. 2. Elevate Your Reputation: By this, you can send info to clients and the loan officer with your info and more. Please review it and provide your feedback and don’t forget to rate it. We appreciate your response. Thank you so much!! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Loan Calc-Lite Features: Free Trial: Get full access to all premium No ads features FREE for 2 weeks. Premium Subscription - $0.99/month Ad-free Experience: Enjoy the app without any ads for a cleaner, distraction-FREE interface. Subscription Details: Price: $0.99/month Payment will be charged to your iTunes account after the 2 weeks free trial ends. Subscription automatically renews each month unless canceled at least 24 hours before the end of the current period. Manage or cancel your subscription anytime in your iTunes account settings.
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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.