App Overview

GymGoal icon

GymGoal

Maryna Kolokolkina · Health & Fitness

praised by pros and trainers as the most capable and flexible workout planner and tracker.

$1.99 · In-app purchases

PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.7
70 ratings · Top 15%

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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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'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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Free quick prompt For a smaller starting point

Quick prompt

> SELECT BUILD PLATFORM:

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

// RORK SYSTEM PROMPT
Rork plan preview for GymGoal: 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

Offer a larger selection of exercises and customizable workout routines.

Assumption to check: Limited exercise library and workout templates.

Validate with people who use this workflow before building.

Hypothesis 2

Implement barcode scanning for faster meal logging.

Assumption to check: Nutrition tracking is tedious and lacks barcode scanning.

Validate with people who use this workflow before building.

Hypothesis 3

Create social challenges and community features to enhance user engagement.

Assumption to check: No social features for motivation.

Validate with people who use this workflow before building.

Hypothesis 4

Simplify the paywall and provide clearer subscription benefits.

Assumption to check: In-app purchase process can be confusing.

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

praised by pros and trainers as the most capable and flexible workout planner and tracker. • the only app that can handle any routine and workout. • organizes your workouts and helps you reach your goals in strength, muscle size or weight loss. it will empower you with knowledge and revolutionize your workouts. • featured in the new york times, consumer reports, the daily. ••••• features ••••• these features work without any purchases or subscriptions • 390 exercises with animations and step by step instructions. • text, pictures, animated gifs and youtube clips can be attached to any exercise. • 67 workout routines. • flexible tracking system for strength, cardio, plyometrics, stretching workouts, circuit training, tabata or any other workout type. supports supersets, freeform notes and much more. workout history is fully editable. • the workout logging screen is optimized for fast data entry. it is extremely feature-rich. you can copy data from the history, add new exercises, images and videos, start timers - all within this screen. • bodyweight and assisted-weight exercises automatically account for your body weight. • gymgoal calculates your one rep max for every exercise. • workout history by muscle shows muscles that you neglect. • weekly and rotating schedules support up to 4 workout sessions a day. • body measurements tracking plus additional custom trackers. • the best in class body fat tracking module includes a calculator, several skinfolds (calipers) methods, direct entry. tracks every method and individual skin folds, explains results. • one-rep max, bmi, bmr, tdee, target heart rate calculators and progress tracking. • apple watch support. • automatic two-way syncing of bmi, bmr, body fat, weight and height with apple health. export of burned calories to apple health. • you don't need an internet connection - everything is stored on your device. • ability to back up your data to the server, or to email it. you can copy your data between iphones and other supported devices. • workout logs, measurements, routines and the schedule can be emailed for review and printing. workout logs can be opened in excel. • 3 user accounts. ••••• pro features ••••• available with auto-renewable subscription* • 50 user accounts. • unlimited custom exercises and routines. without a subscription you can use all routines and make one custom routine. • heart rate tracking with apple watch or any bluetooth 4 device. • gps tracking. • stretching and plyometric exercises. • two-way syncing with runkeeper and mapmyfitness - both cardio and strength workouts. you can depend on gymgoal • gymgoal is in appstore since 2008. it is used by over a million people, from beginners to pro athletes and trainers, and even in schools. • many people have 9 years of detailed workout history in gymgoal. years of history do not slow gymgoal down. • updates will not lose your routines, schedule or workout history. even if your iphone breaks, you will be able to restore your data from the server backup. ----- * subscription terms – the auto-renewable subscription enables the described above pro features – payment will be charged to itunes account at confirmation of purchase – subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period – account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal – subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's account settings after purchase terms of use: http://gymgoal.com/terms.html the length of the subscription - we offer two options: • 3 months: $0.99 usd, charged every 3 months • 1 year: $2.99 usd, charged yearly.

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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
Zustand
@react-native-community/hooks
react-native-reanimated
expo-router
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.