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
I Need That Widget: Calendar
"I Need That Widget" brings clean, focused calendar and reminder widgets to your Home Screen and Lock Screen
$2.49 · In-app purchases
PRICE
$2.49
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
5 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.
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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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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 I Need That Widget: 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
Offer more widget types and settings.
Assumption to check: Limited widget customization options compared to competitors
Validate with people who use this workflow before building.
Hypothesis 2
Provide a free trial or freemium model.
Assumption to check: In-app purchase for advanced features may deter users
Validate with people who use this workflow before building.
Hypothesis 3
Improve UX with guided onboarding for new users.
Assumption to check: Difficulty in navigating between widget settings
Validate with people who use this workflow before building.
Hypothesis 4
Implement widget sharing and collaboration features.
Assumption to check: No option for widget sharing with others
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
"I Need That Widget" brings clean, focused calendar and reminder widgets to your Home Screen and Lock Screen. See today's schedule, upcoming events and reminders, weekly plans, a full monthly calendar, and today's reminders at a glance without digging through apps. Your calendar and reminder data stays private on your device. KEY FEATURES - Home Screen Widgets for different layouts - Small: Month Calendar or Today Counts - Medium: Upcoming events and reminders, or Weekly Calendar - Large: Full Month Grid or Compact Event List - Lock Screen Widgets - View a compact 3-week calendar directly on your Lock Screen - See today's reminders from the Lock Screen with the reminder widget - Focus Calendar Filters - Choose which calendars stay visible while a Focus is active - Apply the same calendar filter in the app and widgets - Turn off the active Focus filter from the app when needed - Today Counts Widget - See today's total event and reminder count at a glance - Get a quick summary for busy days or free days - Reminder Support - View reminders alongside calendar events - See today's reminders and upcoming reminders in widgets - Choose whether to show overdue reminders and reminders without due dates - View recurring and all-day reminders more reliably - Open reminder details from supported widgets and app views - Weekly Calendar Widget - See your week in a clean 7-day layout - Choose a rolling 7-day view starting today, or use your selected week-start setting - Choose the first day of the week in the app settings, or follow your system setting - Open in Your Preferred Calendar App - Apple Calendar, Google Calendar, and Fantastical supported - Tap widgets and jump into the calendar app you prefer - Improved fallback helps widget taps recover when permissions or destination apps need attention - Customizable - Choose which calendars and reminder lists to show - Choose between the new calendar-inspired app icon and the Classic icon - Toggle all-day events - Control reminder visibility - Choose how to display past items - Localized - Available in English, Korean, German, Spanish, French, Arabic, Dutch, Hindi, Japanese, Simplified Chinese, Traditional Chinese, and Portuguese - Includes regional variants such as English (UK), English (Canada), English (Australia), Spanish (Mexico), Spanish (Spain), Portuguese (Portugal), and Portuguese (Brazil) - Privacy First - Your calendar and reminder data stays on your device - No accounts, no servers, no tracking - Clean and Simple - No ads - No clutter - No subscription PERFECT FOR - Checking your schedule without opening Calendar - Seeing today's workload instantly - Viewing reminders from the Home Screen or Lock Screen - Planning your week from the Home Screen - Keeping a calendar visible on the Lock Screen - Filtering calendars around your current Focus - Choosing a widget layout that fits your workflow - People who want simple, readable calendar widgets PRIVACY & SIMPLICITY Your calendar and reminder data never leaves your device. "I Need That Widget" is built for people who want practical widgets, minimal design, and quick access to what matters most. An in-app FAQ explains widget setup and answers common questions.
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
react-navigation
expo-color-picker
react-native-reanimated
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.
