App Overview

MadMuscles: Workouts & Diet icon

MadMuscles: Workouts & Diet

Amoapps Limited · Health & Fitness

MadMuscles is a fitness app designed to help people gain muscle, lose weight, look hot and feel incredible

Free · In-app purchases

PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
4.4
128,404 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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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 MadMuscles: Workouts & Diet: 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

Allow users to create custom workout plans with favorite exercises.

Assumption to check: Limited workout customization options

Validate with people who use this workflow before building.

Hypothesis 2

Implement a barcode scanner for quick meal logging.

Assumption to check: Nutrition logging can be tedious

Validate with people who use this workflow before building.

Hypothesis 3

Provide clear explanations and trial periods for premium features.

Assumption to check: In-app purchase structure might confuse users

Validate with people who use this workflow before building.

Hypothesis 4

Incorporate social features like challenges and leaderboards.

Assumption to check: User engagement drops over time

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

MadMuscles is a fitness app designed to help people gain muscle, lose weight, look hot and feel incredible. We make workouts accessible, effective and joyful by creating personalized workout plans tailored to each user’s needs and desires. No more excuses. It’s time to get the mad muscles you’ve always wanted! What makes MadMuscles effective? • Static and dynamic workouts for the best results Our workouts are designed for people with different fitness levels, lifestyles and goals: gain muscle, lose weight or get shredded. MadMuscles helps to work on different parts of the body – from stronger arms to toned legs, no muscle group is left behind. You can choose whether you want to workout at home or go to the gym – we’ve got you covered either way. • More than just regular strength training We go way beyond classic workouts and keep things exciting. Introducing calisthenics and military workouts: push your limits and see if you’re up for the challenge. Or, if you prefer something more relaxed, try tai chi or chair yoga. Pick your new favorite workout, depending on your preferences and never get bored with the same routine. • Video tutorials Don’t worry if you don’t know how to do a certain exercise – our high-quality professional video tutorials will show exactly how it’s done. • Exercise swap Don’t like the exercise in your workout plan? Swap it with the one you actually like. The app will choose an exercise for the same muscle group and of the same difficulty. • Achievements Get rewarded for your hard work. Achievements will make working out fun and will keep you motivated. • Sync with Apple health Sync MadMuscles with Apple health for better results. • Useful and fun challenges Make your body hot and your mind sharp. Develop healthy habits and discipline by trying our numerous challenges. You’ll never experience lack of motivation again – MadMuscles will not let you give up! • Personalized meal plans Nutrition is a key element in any body transformation process. Our meal plans are adjusted to your preferences and restrictions, with easy and quick recipes and a shopping list that will make cooking healthy and delicious meals easier. Privacy policy: https://madmuscles.com/privacy-policy Terms of use: https://madmuscles.com/terms-of-service

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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
Supabase
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.