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.
Eventual Calendar is a fast, elegant calendar app designed to help you stay organized without friction
$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.
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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 Eventual 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 and tasks
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: No recurring tasks feature
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Poor integration with other calendar apps
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Limited offline functionality
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.
Eventual Calendar is a fast, elegant calendar app designed to help you stay organized without friction. It brings your schedule, reminders, and daily plans together in one beautifully simple experience—so managing your time feels effortless. Whether you’re juggling meetings, family activities, or personal goals, Eventual keeps everything clearly laid out and easy to adjust. Key Features: Powerful Calendar Views Move seamlessly between Monthly, Weekly, and Timeline views. See your entire schedule at a glance or focus in on a single day—smoothly and intuitively. Stencils — Plan Faster Create Stencils for events that don’t follow a simple repeating pattern, like part-time work, sports practices, doctor appointments, or rotating meetings. Reuse them anytime to add events in seconds—no retyping required. Stencils sync automatically across your devices with iCloud. Reminders, Built In Create, edit, and complete Apple Reminders directly inside Eventual. Your tasks and calendar events appear together in one unified view, so nothing slips through the cracks. Smart Search & Filters Quickly find past or upcoming events by title, location, or notes. Powerful filters make it easy to surface exactly what you’re looking for. Personalize the Look & Feel Customize colors, typography, accents, event indicators, and layout options to make Eventual feel truly yours—without adding clutter. Interactive Widgets Stay on top of your schedule with rich Home Screen widgets. See upcoming events, jump to dates, and stay oriented without opening the app. Designed the Right Way • Privacy First – No tracking. Your data stays on your device and syncs securely via iCloud. • Offline Ready – Create and edit events even without an internet connection. • Native Performance – Built with modern iOS technologies for a smooth, responsive experience. Plan your days with clarity. Download Eventual Calendar and make scheduling feel simple again.
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.