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
Caledari: AI Calendar
Most calendars shout
$3.99 · In-app purchases
PRICE
$3.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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/
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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.
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
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Caledari: AI 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
Implement advanced AI suggestions to better manage conflicts.
Assumption to check: Scheduling conflicts due to lack of AI understanding
Validate with people who use this workflow before building.
Hypothesis 2
Add robust task management with subtasks and reminders.
Assumption to check: Limited task management features
Validate with people who use this workflow before building.
Hypothesis 3
Design a minimalist UI that enhances usability.
Assumption to check: User interface may be cluttered
Validate with people who use this workflow before building.
Hypothesis 4
Ensure seamless sync with Google Calendar and iCloud.
Assumption to check: Poor syncing capabilities with external calendars
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
Most calendars shout. Caledari whispers. Caledari shows your whole day in one calm glance, then gets out of the way. Tell it what you need in plain words, by voice or text, and it schedules, moves, and clears things for you. No grids. No dragging boxes. No clutter. YOUR BOOKING LINK Share caledari.com/you and let people book time with you. It works like a scheduling page, but calm. An AI offers only times that truly fit your day, and confirmed meetings write themselves back to your calendar. No back-and-forth emails, and no grid for your guests unless they want one. WHAT MAKES IT DIFFERENT - One glance: your next thing, front and center. Everything else is a tap away. - Talk to your day: speak or type, and Caledari handles the rest. - Your booking link: caledari.com/you, included with Caledari Plus. - On-device intelligence: on modern iPhones your requests are understood right on your device with Apple Intelligence. There is no Caledari account. - All your calendars, unified: iCloud, Google, Outlook and more, read on your phone and shown as one clear day. - A calm streak: clear your day and watch your week fill with light. CALEDARI PLUS Everything is free for your first 7 days. No account, no card. After that, Caledari Plus keeps it going: $3.99/month or $19.99/year, auto-renewing, cancel anytime in your App Store settings. PRIVACY Caledari reads the calendars already on your phone and keeps to your device wherever it can. It never copies your calendar to a server of ours. You can delete your booking page and its data any time from Settings. Read the whole story at caledari.com/privacy. Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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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.
SUGGESTED BUILD STACK
React Native
Expo
Supabase
@react-navigation/native
react-native-calendars
react-native-paper
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.
