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.
App Overview
Sign In App
SignIn : Visitor & Staff Sign In
$9.99 · In-app purchases
PRICE
$9.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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.
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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included14 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Screen plan
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.
Differentiate and validate
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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Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Sign In App: 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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Opportunities
AI-GENERATED OPPORTUNITY HYPOTHESES
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
Implement loading indicators and error messages.
Assumption to check: Limited user feedback during sign-in process.
Validate with people who use this workflow before building.
Hypothesis 2
Enhance user experience with a robust reset password feature.
Assumption to check: Lack of password recovery options.
Validate with people who use this workflow before building.
Hypothesis 3
Integrate social media sign-in for easier access.
Assumption to check: No social login options.
Validate with people who use this workflow before building.
Hypothesis 4
Allow users to customize their profile more extensively.
Assumption to check: Inflexible profile management.
Validate with people who use this workflow before building.
App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
App Store description
SignIn : Visitor & Staff Sign In A clean, professional sign-in system for your reception, office, or venue. Designed for iPad and iPhone, SignIn makes it easy to manage visitors and staff. Without clipboards, paper logs, or complicated software. VISITOR SIGN IN Visitors type their name, and if they've visited before their details are found automatically. New visitors fill in a simple form. You choose exactly which fields to show. Collect names, organisations, email addresses, phone numbers, reason for visit, member status, and a custom consent or permissions question, or keep it minimal with just a name. EMPLOYEE SIGN IN Staff select their name from your employee list and sign in with a single tap. No passwords, no fuss. SIGN OUT Anyone can sign out quickly by searching for their name, No scrolling through long lists. ADMIN DASHBOARD (PIN protected) • See everyone currently signed in at a glance • Browse the full sign-in history by date • Export records as a CSV file for your own reporting • Manage your employee list • Customise the visitor form fields, consent question, and reasons for visit MAKE IT YOURS • Add your company name and logo to the welcome screen • Choose between a dark or light colour theme • Set your own 4-digit admin PIN • Fully configure what information you collect from visitors PRIVACY FIRST All data is stored locally on the device. Nothing is sent to any server or third party. You own your sign-in records. Perfect for: • Coworking spaces and business centres • Offices and reception desks • Clinics and studios • Schools, clubs, and community venues • Any space that needs a professional sign-in record
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
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Build scope
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Define the first version
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Set boundaries
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Check the hard parts
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
SUGGESTED BUILD STACK
React Native
Expo
React Navigation
Axios
Firebase Authentication
BUILD KIT DIFFICULTY
Intermediate
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.
