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.
App Overview
WorkoutX: Gym Tracker
WorkoutX is a workout companion designed to help you stay consistent in the gym or elsewhere
$0.99
PRICE
$0.99
No in-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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 should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included
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.
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
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
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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
WorkoutX is a workout companion designed to help you stay consistent in the gym or elsewhere. Built around a structured Push/Pull/Legs routine, WorkoutX removes the guesswork from training so you can focus on what matters most: showing up, putting in the work, and making progress. Structured Workout Plans - Follow a clear workout schedule and always know which exercise comes next. - Train with or without equipment based on your setup and environment. Workout Details at a Glance - View exercises, sets, and weights for every workout day in one organized place. - Add, edit, and organize exercises to match your training goals. Built-In Rest Timers - Keep your rest periods consistent and stay focused between sets. - Easily view your rest timers and exercise progress whenever you need through Live Activity. Complete Workout Journey - Adjust sets and weights as you get stronger and continue challenging yourself over time. - Review your workout history and see how your training has evolved. Whether you're stepping into the gym for the first time or looking for an easier way to stay organized, WorkoutX helps you train consistently, track your progress, and build lasting habits. Download WorkoutX and start your next workout today. Privacy Policy: https://charliexu.me/workoutx/privacy Terms of Use: https://charliexu.me/workoutx/terms
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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.
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
BUILD KIT DIFFICULTY
Not assessed in a Build Kit yet.
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.
