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
Invitation Maker: Cards & RSVP
App of the Day on the App Store.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.9
47,324 ratings · Top 5%
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.
Build your own version
Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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Combine features and design from your favorite apps.
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What's included18 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 Invitation Maker: Cards & RSVP: map the core Graphics & Design workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
App of the Day on the App Store. The perfect Wedding, Birthday and Party invitations maker & Greeting cards maker Planning an event? Whether it's a happy birthday card, party invite, wedding invitation, save the date, or online RSVP: Our AI Party Invitation Maker and RSVP tracker will make the process simple and stress-free. As a leading AI invitation maker, we help you generate custom designs in seconds. Greetings Island’s invitation maker has tons of free invitations templates for every occasion: • Flyer maker free • Greeting Cards and Birthday Wishes • Party Invitation Maker • Wedding Invitation Maker • Birthday Card Maker • Bachelorette Party Card editor • Poster maker • Save The Date Card • Baby Shower Invitation Maker • RSVP card / ecard invitation And many more options to use in our online invitation maker AI are waiting for you! With Greetings Island, you can easily manage RSVPs for your event. Add your event title, location, gift registry, and let guests leave messages. Set RSVP deadlines, reminders, and guest limits - all in one place. Our smart AI RSVP management system ensures you never miss a guest update. Simple, stylish, and stress-free event planning. With our e invite maker and template maker, you can easily customize invitations, greeting cards, and more. From save the date cards to wedding invitations, our template library has you covered. How Does Greetings Island Compare to Canva or Evite? While Canva or Evite offers a broad range of design tools for various projects, Greetings Island is focused specifically on making it easy to create invitations and greeting cards. Discover the convenience of paperless invites by using our invitation maker to create digital invitations. Planning a birthday party? Our birthday invitation maker provides a wide array of templates and customization options. Design unique and personalized birthday cards that will impress your guests. It's easy to create something memorable with our intuitive card maker. Experience the joy of celebration in three easy steps with our - Invitation maker FREE: • Select the category that best suits your event, whether it's party invitations, birthday cards, wedding invitations, or baby shower invitations. • Choose your favorite design from our vast selection of invitation templates. • Personalize your card and share paperless postcards or download your virtual invitations for free. Whether you're a professional graphic designer or a DIY enthusiast, our RSVP invitation maker, collage maker, and card maker will make you feel the openness of an open canvas to design your dreamy invitations. Exciting news for Greetings Island invitation app enthusiasts! Upgrade your experience with our PREMIUM VERSION and enjoy the following benefits: • Unlock 10,000+ card designs • Ad-Free • No Watermarks • Unlimited AI credits • Unlimited email invites • Scheduled sending Download now and enjoy a FREE TRIAL of our premium invite maker. Don't wait any longer! Install Greetings Island AI invitation maker for free today and bring your invitations to life. Love the app and our free invitations? Leave a five-star review to support us. - Terms of use: https://www.greetingsisland.com/terms - Privacy policy: https://www.greetingsisland.com/privacy
Written user reviews are not shown here. Check current App Store reviews >
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
Offer more flexible design tools and templates.
Assumption to check: Limited template customization options
Validate with people who use this workflow before building.
Hypothesis 2
Provide better tracking and notification systems for RSVPs.
Assumption to check: Difficulties in managing RSVPs
Validate with people who use this workflow before building.
Hypothesis 3
Allow multiple users to edit the same invitation.
Assumption to check: Lack of collaborative features
Validate with people who use this workflow before building.
Hypothesis 4
Clarify subscription benefits and provide clearer pricing information.
Assumption to check: In-app purchase confusion
Validate with people who use this workflow before building.
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
Supabase
Zustand
React Navigation
expo-image-picker
BUILD KIT DIFFICULTY
Advanced
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.
