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
Alcohol Timer - In Real Time
Alcohol Timer - Monitor Your Alcohol Level in Real Time!
$1.99 · In-app purchases
PRICE
$1.99
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.
Build your own version
Build Kit
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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.
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/
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 Alcohol Timer - In Real Time: map the core Food & Drink 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 real-time data syncing to improve user engagement.
Assumption to check: Apps in this category often lack real-time updates
Validate with people who use this workflow before building.
Hypothesis 2
Design a clean, minimal UI that focuses on essential features.
Assumption to check: User interfaces can be cluttered and confusing
Validate with people who use this workflow before building.
Hypothesis 3
Introduce reminders and notifications to encourage logging.
Assumption to check: Users often forget to log drinks
Validate with people who use this workflow before building.
Hypothesis 4
Allow users to customize their drink database and settings for a tailored experience.
Assumption to check: Limited personalization options
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
Alcohol Timer - Monitor Your Alcohol Level in Real Time! Are you out with friends or at an important dinner and want to know if you can still drive safely? Alcohol Timer is the perfect app to monitor your blood alcohol level in real time! Main Features • Interactive Graph: View the progress of your alcohol level with a clear and intuitive graph. • Automatic Timer: A countdown estimates when you will have eliminated the alcohol in your body. • Add Your Drinks: Easily enter the drinks you have consumed with details such as quantity, alcohol content and time. • Safety Tips: Monitor and estimate if it is better not to drive. • Custom Profile: Configure your weight and gender for even more precise calculations. • Light/Dark Mode: Choose the theme you prefer for an optimal experience, day and night. Why use Alcohol Timer? • Quick and Easy: Enter your drinks in a few seconds. • Practical: Calculations based on scientific formulas to estimate your blood alcohol level. Timer: It shows you the estimated time to dispose of it. Ideal for any occasion • Nights out • Dinners with friends and family • Festivals and concerts • Special events and celebrations Download Now and Stay in Control! Leave nothing to chance: with Alcohol Timer you will always have an estimate of your blood alcohol level available. Your safety and that of others comes first. Disclaimer: This app provides an indicative estimate of the alcohol level based on mathematical formulas and data entered by the user. The results are not 100% accurate and do not replace official tests. To be safe, avoid driving if you have consumed alcohol. The authors assume no responsibility for improper use of this app.
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
Zustand
React Navigation
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.
