App Overview

Alcohol Units Calculator icon

Alcohol Units Calculator

Essence Computing · Medical

The purpose of this App is to accurately record the units you are consuming

$0.99 · In-app purchases

PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.2
5 ratings · Top 30%

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 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.

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.

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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> SELECT BUILD PLATFORM:

Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

// RORK SYSTEM PROMPT
Rork plan preview for Alcohol Units Calculator: map the core Medical 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

Expand drink types and customize options.

Assumption to check: Limited drink options compared to competitors

Validate with people who use this workflow before building.

Hypothesis 2

Implement sharing options for users to share their consumption.

Assumption to check: No social sharing features

Validate with people who use this workflow before building.

Hypothesis 3

Provide tips and resources about responsible drinking.

Assumption to check: Lack of educational content on safe drinking

Validate with people who use this workflow before building.

Hypothesis 4

Add customizable reminders for users to track their intake.

Assumption to check: No reminders or notifications for users

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 purpose of this App is to accurately record the units you are consuming. You do this by, at least, knowing the percentage alcohol and the amount of the drink - specified in ml, cl, litres, uk pints or US fl ozs. Unlike other Apps it does not care what the drink is (e.g. a glass of wine or a pint of beer) just the units. It does not judge you about the amount you are drinking it is trying to help you recognise how much you are drinking and manage that however you want. Recent changes have introduced the ability to mark a day as Alcohol Free, change the number of days used to calculate the rolling averages shown and, with this update, the ability to change the percentage alcohol and drink amount using the watch App rather than having to use the phone to make these changes. Ever wondered how many units there are in a drink? This App can can be used to just calculate the number of units in a drink but it can also be used to keep track of units consumed. Just press the 'Add Units' button. Until you ask yourself the question how many units am I consuming day by day, week by week and through the months you will have no idea. Many people wildly underestimate the amount they drink. This App can tell you and it can be very enlightening. Unlike other Apps this one makes no judgement on how much you drink it is a means for you to understand the amounts and to act as you see fit. If you choose to cut down then that is your choice. Maybe this App will confirm that apart from the odd day or two you are generally within guidelines. This App is not restricted in the amounts that can be entered unlike other similar Apps. The values are entered using a decimal number pad so you are not restricted by the values specified on picker wheels. You can enter ANY amounts using US fl Ozs, millilitres, centilitres, litres, UK pints. Drink Driving Limits: A 3.6% abv pint of beer has 2 units in it. In the UK to remain within the drink drive limit you can have no more than 1 pint of weak (3.6%) beer - any more and you risk being over the drink drive limit. Note, that the last sentence used the word 'weak', not one pint of beer but one pint of weak beer. So what difference does that make? Well a 5% beer has 2.84 units in it. So, you're probably pushing the upper limit, if not already over it. Legal Disclaimer: Do not use this App as a guide to whether you can drive a car or not. This App is just for calculating and collating the number of units consumed. Now with Apple Watch support & iCloud Support to save your precious information. Easy to add the same units from your Apple Watch. See how many units you've consumed today glancing at your Apple Watch. Save you units consumed to iCloud. Retrieve them on another device.

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.

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BUILD KIT DIFFICULTY
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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.