App Overview

Calcium Counter and Tracker icon

Calcium Counter and Tracker

First Line Medical Communications Ltd · Health & Fitness

Use this app to avoid calcium deficiency, which is common if you are on a vegan, milk-free or weightloss diet or if you are pregnant or breastfeeding

$4.99 · In-app purchases

PRICE
$4.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
3.8
47 ratings · Top 50%

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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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 Calcium Counter and Tracker: map the core Health & Fitness 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

Enhance the app with a larger database and user contributions.

Assumption to check: Limited food database for calcium content

Validate with people who use this workflow before building.

Hypothesis 2

Integrate barcode scanning for easier food logging.

Assumption to check: No barcode scanning for food items

Validate with people who use this workflow before building.

Hypothesis 3

Add social challenges and sharing options for motivation.

Assumption to check: Lack of social features to share progress

Validate with people who use this workflow before building.

Hypothesis 4

Offer more value in the free tier or trial options.

Assumption to check: Subscription model may deter 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

Use this app to avoid calcium deficiency, which is common if you are on a vegan, milk-free or weightloss diet or if you are pregnant or breastfeeding. Deficiency results in osteoporosis with weakened fracture-prone bones and loose teeth, impaired muscle function with muscle cramps and spasms, dry skin, and brittle hair and nails. In addition, women under 55 years of age who have a higher calcium intake have been found to have a lower risk of bowel cancer. Set your target daily calcium intake based on guidance provided in the app and your preferences for weights of food (g or oz). Record food and beverage consumption using the barcode scanner (please note that only manufacturers in the US are required to include calcium content in the nutrition label read by the scanner), dictation, search or by favoriting foods and using the serving sizes provided (which can be changed at any time). Tap the notepad to add notes. Compare the calcium content of different foods by tapping the Compare button on the "Foods" screen. Monitor daily and long-term progress, export data to share with healthcare providers, synchronize data with other First Line Medical Communications Ltd nutrient counter apps, and share data with Apple's HealthKit. Add your own foods and recipes and change serving sizes to personalize the app's 400-item database for you. All food and beverage popups indicate whether the item is a plant, good prebiotic, probiotic or ultra-processed food (UPF) to inform a healthy diet and whether they are high or low FODMAP per serving where data are available to support people with irritable bowel syndrome (IBS). Useful lists show calcium content of foods per 1oz or 100g and serving, which can be toggled from high to low & low to high. Also useful UPF, unprocessed plant, prebiotic, probiotic, high & low FODMAP food lists.

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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.

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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.