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.
ShredX — Workout & Nutrition
$0.99 · In-app purchases
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.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
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Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for ShredX: Workout & Nutrition: 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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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
Assumption to check: Difficulty in tracking progress consistently.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Lack of social features for motivation.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Overwhelming amount of data entry required.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Limited workout customization options.
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
ShredX — Workout & Nutrition Get genuinely stronger in 8 weeks. ShredX gives beginners a proven Push/Pull/Legs strength program, dead-simple set logging, and built-in nutrition tracking — all in one clean, no-fluff app. No subscriptions to figure out, no endless feature bloat. Just show up, log your lifts, hit your protein, and watch the numbers climb. A REAL PROGRAM — NOT RANDOM WORKOUTS ShredX is built around an 8-week Beginner Strength plan using the time-tested Push/Pull/Legs split — three focused sessions a week, about 45 minutes each. Every workout tells you exactly which exercises to do, how many sets and reps to aim for, and includes short form cues so you lift safely and with confidence. LOG EVERY SET IN SECONDS Tap in your weight and reps as you go. ShredX remembers everything, marks each set complete, and keeps your whole session organized so you're never guessing what you did last time. Progressive overload becomes effortless when you can actually see your last numbers. SEE YOUR PROGRESS ADD UP Watch your completion climb across the full 8-week grid, track total sessions, and review every logged workout with your top set highlighted for each exercise. Real, visible proof that you're getting stronger. DIAL IN YOUR NUTRITION Strength is built in the kitchen too. ShredX calculates a personalized daily protein target from your bodyweight, then lets you log meals with protein, carbs, fats, and calories. Clean macro rings show your daily totals at a glance so you always know where you stand. WHY LIFTERS LOVE SHREDX • Complete 8-week Push/Pull/Legs strength program • Fast, frustration-free set & rep logging • Progress tracking with top-set highlights • Personalized protein targets + full macro tracking • Beautiful, distraction-free dark interface • Works entirely on your phone — your data stays with you BUILT FOR BEGINNERS, RESPECTED BY EVERYONE Whether you've never touched a barbell or you're getting back into a routine, ShredX removes the guesswork so you can focus on the work. Follow the plan, log your sets, fuel your body — and become your strongest self.
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Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.