App Overview

miCal - The missing Calendar icon

miCal - The missing Calendar

entwicklungsschmiede UG & Co KG · Productivity

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

PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.7
593 ratings · Top 15%

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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A product spec, screen plans, and build steps for your coding agent.

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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/
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Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.

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.

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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

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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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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 customize color codes and categories for events.

Assumption to check: Limited customization options for events

Validate with people who use this workflow before building.

Hypothesis 2

Implement a more robust sync feature for better integration.

Assumption to check: Sync issues with third-party calendars

Validate with people who use this workflow before building.

Hypothesis 3

Add reminder settings for users to get notified before events.

Assumption to check: Lack of reminders or notifications

Validate with people who use this workflow before building.

Hypothesis 4

Introduce home screen widgets for quick event viewing.

Assumption to check: No widget support for quick access

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

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 >

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
Zustand
date-fns
react-navigation
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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.