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
Calendly: Meeting Scheduling
The perfect partner app to our desktop application, the new Calendly app lets you bring the power of scheduling with you on-the-go.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
55,644 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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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included17 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 Calendly: Meeting Scheduling: 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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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
The perfect partner app to our desktop application, the new Calendly app lets you bring the power of scheduling with you on-the-go. You can quickly copy your scheduling links and paste them into an email, text, or any other app, saving you time while you’re away from your computer. Utilizing iOS’ native sharing capabilities, you can quickly populate your scheduling link and a brief message without ever needing to leave the Calendly app. With the ability to view upcoming meeting details, you can feel more prepared throughout the day, wherever it may take you. View answers to your invitee questions, look up a phone number and even join video calls directly from the app. You also have the flexibility to reschedule or cancel upcoming meetings to better accommodate your day or your invitee's. Go about your day with confidence knowing that you have the power of Calendly right in your pocket! Privacy Policy: https://calendly.com/legal/privacy-notice Terms of Use: https://calendly.com/legal
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
Allow users to create custom event types and templates.
Assumption to check: Limited customization options for event types.
Validate with people who use this workflow before building.
Hypothesis 2
Implement a cleaner, more organized layout.
Assumption to check: User interface can be cluttered at times.
Validate with people who use this workflow before building.
Hypothesis 3
Enhance compatibility with more calendar services.
Assumption to check: Integration issues with some calendar applications.
Validate with people who use this workflow before building.
Hypothesis 4
Provide better options for notification settings.
Assumption to check: Notifications can be overwhelming.
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
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.
