App Overview

MacroFactor - Macro Tracker icon

MacroFactor - Macro Tracker

Stronger By Science Technologies LLC · Health & Fitness

MacroFactor combines innovative coaching algorithms with proven nutrition and behavioral science to help you reach your diet goals and achieve empowering, sustainable results.

Free · In-app purchases

PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
4.8
22,326 ratings · Top 5%

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 included18 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 MacroFactor - Macro 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

Implement a barcode scanner for quick food logging.

Assumption to check: Users find logging food time-consuming.

Validate with people who use this workflow before building.

Hypothesis 2

Allow users to easily add custom food items.

Assumption to check: Limited food database can frustrate users.

Validate with people who use this workflow before building.

Hypothesis 3

Provide clearer information and benefits of each subscription tier.

Assumption to check: Subscription model can be confusing.

Validate with people who use this workflow before building.

Hypothesis 4

Introduce social sharing features for progress.

Assumption to check: Progress tracking may not be motivating enough.

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

MacroFactor combines innovative coaching algorithms with proven nutrition and behavioral science to help you reach your diet goals and achieve empowering, sustainable results. MacroFactor uses a dynamic algorithm to adapt to changes in your metabolism and personalize your macro plan to keep you on track. Download to start your 7-day trial of this premium, ad-free macro tracker app. DIET SMARTER Using a best-in-class expenditure estimate, MacroFactor’s nutrition coach algorithm adapts to changes in your metabolism so you never plateau. • The unique energy expenditure calculation detects changes in your metabolism • Smart algorithms personalize your calorie and macro intake targets, just like a nutrition coach would • Weekly check-ins keep you on track toward your goals The result? You better understand your body’s needs and can successfully reach and sustain your goals without stress. THE BEST MACRO TRACKER TOOLS • The fastest macro tracker on the market with tools like barcode scan and custom foods • Verified food database, so you can trust the accuracy of the foods you log • Custom macro programs and weekly check-ins based on your goals and preferences • Detailed breakdowns of micronutrients, macros, and more • Period tracker, habit tracker, unique data insights and visualization, integrations, dark mode, and more AN EMPOWERING, SUSTAINABLE APPROACH MacroFactor’s robust nutrition coach algorithm will make appropriate adjustments to your calorie and macro targets based on what you log, regardless of how close you came to hitting your targets from the previous week. The algorithms don’t function any worse if you deviate from your macro targets. This means that unlike other nutrition coach apps, you don’t have to eat like a robot or perfectly adhere to your macro targets in order to get your weekly coaching check-in and an appropriate calorie adjustment. You’ll never see warnings, red numbers, or shaming when you go over your calorie or macro targets, unlike in other macro tracker apps. Instead, MacroFactor’s macro tracker and nutrition coach aim to empower you with the guidance and tools you need to reach your goals without stress or rigidity. A CLOSER LOOK AT FEATURES & BENEFITS Nutrition coach • Get a science-backed macro plan designed for your goals and preferences • Set a goal to lose, maintain, or gain weight • Smart nutrition coach AI makes weekly changes to your macro plan to keep you on track Macro tracker • Large verified food database, so you can trust that calorie and macro information is accurate • Barcode scanner • Food tracker for both macros and micronutrients • Features like copy/paste, custom foods, and smart history make food tracking quick and easy • Timeline-style food log doesn’t lock you in to a certain number of meals • Metric and imperial options • Custom foods and recipes Health insights tracker • Best-in-class expenditure estimate • Unique Weight Trend insight that cuts through the noise of daily fluctuations • Habit tracker • Period tracker NOTICES Contains information from Open Food Facts, which is made available here under the Open Database License (ODbL). Open Food Facts: https://openfoodfacts.org/ ODbL: https://opendatacommons.org/licenses/odbl/1-0/ SUBSCRIPTION PRICING & TERMS MacroFactor is a premium app that offers three auto-renewing subscription options: $11.99 / month $47.99 / half year $71.99 / year (equal to $5.99 a month) MacroFactor has a free trial, but does not offer a free subscription tier. These prices are for US customers. Pricing in other countries may vary. Payment will be charged to your Apple account at confirmation of purchase. Your subscription to MacroFactor will automatically renew, unless you cancel at least 24 hours before the current period ends. You can cancel or manage your subscription from your Apple account settings. Terms & Conditions: https://terms.macrofactorapp.com/ Privacy Policy: https://privacy.macrofactorapp.com/

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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
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.