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.
miCal is THE calendar that you’ve always wished your iPhone or iPad had! miCal makes scheduling easier, clearer—and better looking—than ever before.
$1.99 · 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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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 miCal - The missing Calendar: map the core Productivity 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 customization options for events
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Sync issues with third-party calendars
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Lack of reminders or notifications
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No widget support for quick access
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.
miCal is THE calendar that you’ve always wished your iPhone or iPad had! miCal makes scheduling easier, clearer—and better looking—than ever before. Quick Overview The dashboard displays your current appointments and events, tasks and birthdays. You can also see the current weather and an overview of the current month at a glance. Intuitive Controls Intuitively navigate through your calendars and quickly, easily add events and tasks thanks to predefined settings and simple controls. Standard settings like repeating events and reminders/alarms are just a tap away. And powerful special settings are also available, without sacrificing comfort or control. Swipe through views and open events or days with just a tap. miCal Understands You Quickly create events with the new natural language input feature. Natural language input allows you to create events just by describing them. And if you have Siri enabled on your device, you can even dictate your event details instead of typing. The Total Package miCal provides complete, well-organized day, week and month views and displays the calendar week in all the important views. Relax You don’t need to contort yourself with miCal. miCal supports portrait as well as landscape formats in nearly every view. Use each view however it’s most comfortable for you. Tasks/Reminders miCal now supports iOS reminders. Create reminders for all the important tasks in your private and professional life right in the app. Birthday Manager Never again miss an important birthday. Get reminders at preset times featuring the music of your choice. Nice Weather Five-day weather forecasts plus the sunrise/sunset times, humidity and wind speed for the current day. The dashboard even features a quick summary of the current weather as well as a brief forecast of the coming days. Comprehensive miCal offers a unique range of features. Copy, move or send your events. Export your events in the date range of your choice as CSV (for Excel, etc.) or ICS (the calendar format). Set colors for your calendars and individual appointments or automatically add colors based on keywords in event titles. Up to Date and Secure miCal communicates with your device’s integrated calendar. miCal works with all the calendar services that your device currently supports (iCloud, Google Calendar, Outlook, Exchange, Facebook Events, subscriptions) without requiring additional configuration. That way, you can store your data locally or via the services you know and trust—it’s up to you. miCal itself does not transmit any data to external services or other servers. That allows us to ensure 100% data security. Award-Winning - 3rd place in the "Best German iPhone App" competition at the 2010 iPhone Developer conference. - Featured as App of the Week in 13 countries. - Recommendation from iPhoneWelt and a 5-star rating from iPhone&Co, two of the leading iPhone magazines - Honored at the 2010 App Developer Conference
Written user reviews are not shown here. Check current App Store reviews >
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.