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
AstroClock
The beloved desktop app is finally on iOS! AstroClock is a "live" Astrological chart wheel which is updated every minute
$4.99 · In-app purchases
PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 2.7
13 ratings · Below Average
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 AstroClock: map the core Lifestyle 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
Provide more valuable content for free users to build engagement.
Assumption to check: Limited detailed insights for free users
Validate with people who use this workflow before building.
Hypothesis 2
Focus on thorough testing and bug fixes during development.
Assumption to check: Poor user ratings due to bugs
Validate with people who use this workflow before building.
Hypothesis 3
Implement modern design trends and animations for a better user experience.
Assumption to check: Lack of engaging user interface
Validate with people who use this workflow before building.
Hypothesis 4
Clarify subscription tiers and benefits to users to enhance understanding.
Assumption to check: Subscription confusion
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
The beloved desktop app is finally on iOS! AstroClock is a "live" Astrological chart wheel which is updated every minute. You'll see the Ascendant and other cusps change minute-by-minute, and the current position of the planets gradually moving. AstroClock calculates your natal chart positions and lists live transits to your own chart as they are happening. The natal chart planets can be displayed around the clock in a second ring so that you can easily see aspects, or you can put the natal chart in the centre the usual way and see the transits gradually move around your chart. The look of the chart is customisable, and it even changes colour when the Moon goes void-of-course. The perfect tool for horary astrology and an amazing way to learn how astrology works in the moment • Accurate wheel • 6 House systems • Accurate lists of positions • Slider to zoom backwards and forwards in time • Geocentric or Heliocentric positions • Tropical and Sidereal Zodiac • Aspect Lines • Instant Void of Course Moon indicator • Calculates and displays live transits to your natal chart • Customisable look, aspects, orbs and more • Configures itself to your location • Automatic time-zone and daylight time adjustment • Transiting aspects • Scanning ahead of transit aspects
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
Supabase
React Navigation
Zustand
React Native Reanimated
BUILD KIT DIFFICULTY
Advanced
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.
