App Overview

Strong Workout Tracker Gym Log icon

Strong Workout Tracker Gym Log

Strong Fitness PTE Limited · Health & Fitness

The most intuitive workout and exercise tracker for any fitness routine.

Free · In-app purchases

PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.9
108,540 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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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 Strong Workout Tracker Gym Log: 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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App evidence

Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.

Screenshots

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App Store description

The most intuitive workout and exercise tracker for any fitness routine. Strong is the simplest and most intuitive workout tracker, designed to help you get better results from your workouts. Whether you want to gain strength or just stay healthy, join over 1.2 million people who have downloaded Strong to stay on track in the gym. “I’d suggest downloading the “Strong” app before you return to the gym. It’s that good” - CNBC “with apps like Strong, working out feels more like a game” - The Verge “I have used nearly every logging app since the App Store launched. This is the best bar none” “I use this every time I go to the gym and seriously couldn't train without it” “Simple. Intuitive. Functional. Exactly what I was looking for.” “This is bare bones and serious. Right on, and works perfectly... I wish I could give 10 stars.” “It's by far the most intuitive and easy to use workout app I’ve used.” Whether you’re a beginner or an experienced powerlifter, Strong provides everything you need to record your workouts as effortlessly and as quickly as possible. Unlike other fitness apps, Strong doesn’t bog you down with distractions and unnecessary gimmicks you’d never use. Strong is optimized for a progressive barbell routine such as Starting Strength or StrongLifts 5x5, but it is easily adaptable to any other routine of your choosing! FEATURES: • The simplest interface of any fitness app in the App Store • A comprehensive range of cardio and strength exercises - and add your own too! • Fully-featured Apple Watch app to log workouts with or without your iPhone • Add your own routines and easily choose between them • Detailed exercise instructions with a growing library of animated videos • Advanced Statistics show your personal records and progression and even calculate your one rep max and total weight lifted! • Built in Auto Countdown Timer to help record rest breaks • Support for multiple Exercise Types, including Assisted Bodyweight and Duration Exercises • Tag sets as Warm Up, Failure or Drop Sets • Supersets/Grouped Exercises • Track your progress with graphs for Volume and 1RM Progression • Automatically back up your data with Cloud Sync! • Built in body measurements tracker to record your weight and other vitals, with support for Apple Health • Warm Up Calculator tells you which weights to warm up with • Plate Calculator for when the weights get high • Support for Imperial (lbs) and Metric (kg) weights, or a combination of both • Add notes and progress pictures to your workouts • Share sheet makes sharing routines and workouts with friends easier than ever! • Export all of your data to Notes or Email in CSV format The free version of Strong can save unlimited workouts, but is limited to 3 custom routines. Upgrade to a Strong PRO subscription ($4.99/month or $29.99/year) for an unlimited number of routines and to unlock additional PRO features. Strong will automatically charge your iTunes Account at the end of your subscription or free trial period unless auto-renew is turned off at least 24 hours before the end of your current period. Subscriptions renew at the original price. You can turn off auto-renew at any time and still receive full functionality until the end of your current period, but no refund can be provided for unused portions of the subscription. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. If you’ve previously purchased “Unlock Strong” or “Strong Combo Pack”, you’ll be able to use the Restore Purchases option in the app for access to all Strong PRO features. These prices are for customers in the United States and may vary depending on your iTunes Account settings. In-app purchases and subscriptions cannot be shared using Family Sharing. Strong Terms of Service - https://help.strongapp.io/article/179-strong-terms-of-service Strong Privacy Policy - https://www.iubenda.com/privacy-policy/7760215

Written user reviews are not shown here. Check current App Store reviews >

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 quick logging features with templates.

Assumption to check: Users find logging workouts cumbersome.

Validate with people who use this workflow before building.

Hypothesis 2

Allow users to add custom exercises.

Assumption to check: Limited exercise database.

Validate with people who use this workflow before building.

Hypothesis 3

Clarify subscription benefits and provide trial options.

Assumption to check: Subscription confusion among users.

Validate with people who use this workflow before building.

Hypothesis 4

Simplify charts and provide insights on progress.

Assumption to check: Data visualization can be overwhelming.

Validate with people who use this workflow before building.

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.