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
Shabbos Clock
Can't part with your iPhone on the holiest day of the week? We've got the solution!
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 2.4
21 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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A product spec, screen plans, and build steps for your coding agent.
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What's included15 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 Shabbos Clock: map the core Utilities 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
Make a more modern, visually appealing interface.
Assumption to check: Users find the UI clunky and outdated.
Validate with people who use this workflow before building.
Hypothesis 2
Allow users to save multiple locations and customize settings.
Assumption to check: Limited customization options for times and locations.
Validate with people who use this workflow before building.
Hypothesis 3
Optimize the app for better performance across all devices.
Assumption to check: Poor performance on older devices.
Validate with people who use this workflow before building.
Hypothesis 4
Provide comprehensive FAQs and in-app support.
Assumption to check: Lack of user support and documentation.
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
Can't part with your iPhone on the holiest day of the week? We've got the solution! Shabbos Clock is the app for every Jew who celebrates the Shabbat. Features: * Displays current time on screen. * Unlimited Alarm Options * Alarms automatically shut off after specified duration (10-50 seconds) * No snooze button to interfere with Shabbos rules. * Repeatable Alarms by Weekly Pattern * Set Alarms Based Off Of Offsets Of Your Local Sunrise & Sunset * Full iOS11 and iPhone X Support Important: For the alarm to be triggered, you must leave this application open. Closing the program or the iPhone will prevent the alarm from waking you up. Please also make sure your ringer volume is loud enough to wake you up. Make sure to plug in your device to prevent battery drain from not waking you up. Test BEFORE Shabbos to confirm your setup works. Note: If you are using an iPod Touch first generation, make sure to plug in external speakers to hear the alarm. לא יכולים להיפרד מהסמארטפון בשבת? לנו יש את הפיתרון! שעון שבת הוא אפליקציה לכל יהודי שומר שבת תכונות: *מייצג שעה נוכחית על המסך *אפשרויות שעון מעורר ללא הגבלה *שעון מעורר נכבה אוטומטית לאחר זמן מוגדר (10-50 שניות) *ללא כפתור "נודניק" המהווה חילול שבת *צילצול שחוזר על עצמו באופן שבועי *כוונו את השעון לזריחה ושקיעה של איזורכם *תמיכה מלאה ל-iOS11 ול- iphoneX חשוב: בכדי להפעיל את השעון, חובה להשאיר את האפליקציה הזו פתוחה. סגירת האפליקציה או את הסמארטפון ימנע מהתוכנה לעבוד. אנא ודאו כי עוצמת הקול של הנייד גבוהה מספיק להעיר אתכם. במידת הצורך, חברו את שקע החשמל שלא ייגמר הסוללה. בדקו לפני השבת לוודא שההגדרות תקינות. הערה: אם הינך משתמש ב-ipod Touch דור ראשון, ודא לחבר אליו רמקולים חיצוניים לשמוע את הצלצול.
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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
Redux
Firebase
Moment.js
BUILD KIT DIFFICULTY
Starter
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.
