App Overview

MonCal icon

MonCal

gggatelier · Productivity

Thanks for visiting MonCal.

$0.99 · In-app purchases

PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
3.7
13 ratings · Top 50%

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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Combine features and design from your favorite apps.

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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/
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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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Quick prompt

> SELECT BUILD PLATFORM:

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

// RORK SYSTEM PROMPT
Rork plan preview for MonCal: 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 create custom categories and themes.

Assumption to check: Limited customization options for events and tasks

Validate with people who use this workflow before building.

Hypothesis 2

Implement advanced reminders and notifications.

Assumption to check: Basic reminder features

Validate with people who use this workflow before building.

Hypothesis 3

Ensure real-time sync and better cloud integration.

Assumption to check: Inconsistent syncing across devices

Validate with people who use this workflow before building.

Hypothesis 4

Enhance the UI with modern design elements and animations.

Assumption to check: User interface lacks visual appeal

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

Thanks for visiting MonCal. MonCal is a software dedicated to monitor your schedule on and only on a monthly basis. It was developed to mimic the actual usage of schedule paper notes, with a view of your monthly schedule at a glance. This software is suitable for those: Who writes the plan to manage desk calendar or diary of the month view. Who tried many scheduler but ended up using monthly view only. Registered schedules will be synchronized with your iPhone via standard calendar app. If other calendar apps such as iCloud Calendar and MS Exchange are set to sync with the standard calendar app., they will be reflected as well. The fonts used are relatively small but with the Retina display, you will be able to view both the time and place without a stress. In addition, you can choose the fonts from 7 different size variations for a better view. Your daily schedule will be displayed in a popup by tapping the date. MonCal is designed with minimum number of taps and/or flicks in mind in a simplest manner and is not considered to expand its functions or capabilities. *This is the paid version of MonCalite. In the free version the following functions are different. + Color labeling per event is not support + show Ad banner If you are interested, please try the free version. Functions: + Monthly calendar view + Detailed Event view + Launching the maps from a location text + Launching the browser from a URL in notes + Sync with the standard calendar app. + Create a event from input histories. + Color labeling per event + Naming color labels + Color selection per calendar (Text color also available in black and white) + Event repeat (Yearly, Monthly, Weekly (multiple days can be selected), Bi-Weekly, Daily) + Alarm + Beginning of the week + Specifies holiday + Fonts (4 types, 7 size variations) And bold + Layout of an event display ( 3 types ) + Icon badge + Event copy + Landscape mode + Customizing the viewing colors + And other Customizing... + Supports for URL Scheme ('com.gggatelier.moncal://') + Supports iOS 12 / 13 / 14 / 15 / 16 / 17 / 18 + Supports multitasking(Slide Over & Split View) -------------------------- Feedback, requests are X(Twitter): @ gggatelier mail: gggatelier.apps @ gmail.com

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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.

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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.