App Overview

Heavy Loads - Plate Calculator icon

Heavy Loads - Plate Calculator

Francisco Alcala · Health & Fitness

Heavy Loads - Plate Calculator:

$0.99 · In-app purchases

PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
3.0
2 ratings · Below Average

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 included15 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 Heavy Loads - Plate Calculator: 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

Add features like workout tracking and progress graphs.

Assumption to check: Limited features and functionality compared to competitors

Validate with people who use this workflow before building.

Hypothesis 2

Implement a more cohesive design and better UI consistency.

Assumption to check: Inconsistent user experience with UI elements

Validate with people who use this workflow before building.

Hypothesis 3

Introduce social features like sharing results and challenges.

Assumption to check: Lack of user engagement features

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

Heavy Loads - Plate Calculator: Whether you’re chasing PRs, training for a meet, or just need fast and accurate plate math, Heavy Loads helps you load the bar with confidence. Designed for lifters, by lifters, this streamlined calculator ensures your barbell is always loaded correctly—no more guesswork, mental math, or second-guessing your plates. 3 POWERFUL LOADING MODES: 1. AUTO CALCULATION MODE Set your target weight, and Bars N Plates calculates the optimal plate combination based on your customized inventory. Add or remove plates in your collection and the app will always find the best match using the plates you actually own—no unnecessary math, no missing weights. 2. PERCENTAGE BASED MODE Perfect for programming and progressive overload. Set a base weight (like your training max or 1RM) and instantly calculate common percentage targets like 60%, 75%, 90%, or any custom value. The app handles the plate math so you can stay focused on training. 3. MANUAL (REVERSE) MODE See a bar already loaded and want to know what it weighs? Use Manual Mode to add plates in any order—just like they’re on the bar—and Heavy Loads instantly calculates the total barbell weight. Great for coaches, training partners, or quick checks at the gym. KEY FEATURES • Custom Barbell Support: Create and select from multiple barbells, each with their own weight and name—ideal for switching between women’s, men’s, youth, or specialty bars. You can even assign a custom color to each bar to keep them visually distinct on screen. • Unit Conversion at a Glance: Lift in kilograms but stuck with lb plates? No problem. Heavy Loads displays both units at once—your primary unit in large text, and the secondary unit in smaller text. You’ll always know how much you’re lifting, no matter the gear. • Fully Customizable Inventory: Add, remove, and reorder the plates you actually own. From calibrated competition sets to budget bumper plates, you decide what’s available, and the app calculates accordingly. • Clean, Minimal UI: No clutter, no distractions. Built with focus and clarity in mind, Heavy Loads gives you the info you need, right when you need it. • Fast Switching Between Modes: Toggle between loading strategies with a tap—whether you’re preparing for your next working set or reviewing your last lift. • Supports Both Sides Loading: All calculations are done with per-side logic in mind, so what you see is what you load. Heavy Loads is designed for powerlifters, Olympic weightlifters, CrossFit athletes, strength coaches, and anyone serious about barbell training. Whether you’re in your home gym or the weight room at your local gym, Heavy Loads makes it easier to focus on what matters: lifting heavy, with precision.

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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
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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.