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.
LiftUr - Strength & Gym Tracker
$9.99 · 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 LiftUr - Workout & Fitness App: 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: Limited exercise variety in workout logging
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: Inadequate nutrition tracking
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No Apple Watch integration
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.
LiftUr - Strength & Gym Tracker No Subscriptions. Ever. The strength training app that respects your wallet and your privacy. Pay once, it’s yours. LiftUr is an all-encompassing strength training planner built with privacy at the forefront. No subscriptions and no additional purchases for full functionality. All of your data is stored locally on your device, encrypted with SQLite protection, ensuring you are the only one tracking your progress. With LiftUr, you will have the entire gym at your fingertips as soon as you download the app. NO SUBSCRIPTIONS. EVER. Most fitness apps charge $10-20/month. That's $120-240 per year — forever. LiftUr is different: You control all core features No recurring charges. No hidden fees. No surprises. Coming soon, premium templates will be available in-app as one-time purchases COMPLETE WORKOUT TRACKING • 225 exercises covering every muscle group and movement pattern • Build unlimited templates, custom workouts, training blocks, and periodized plans • Track sets, reps, weight, and time-based exercises • Advanced set types: supersets, circuits, drop sets, ascending sets • Quick Workout mode for freestyle training sessions POWERFUL ANALYTICS & PROGRESS • 4 interactive charts: Volume, Strength, 1RM estimates, and Bodyweight • Smart Progression Engine suggests weight increases based on your performance • Automatic personal record detection • Goal tracking: strength targets, weekly volume, and workout frequency • See exactly how much stronger you're getting STAY MOTIVATED • 50 achievements across Beginner, Intermediate, Advanced, and Elite tiers • Streak tracking that knows your rest days • Milestone celebrations for personal records and goals • Progress notifications to keep you accountable YOUR DATA. YOUR DEVICE. PERIOD. • 100% local storage — nothing uploaded to the cloud • AES-256 database encryption • Face ID and Touch ID • Encrypted password-protected backups • Works completely offline — no internet required after initial download BUILT FOR SERIOUS LIFTERS • Periodization support with multi-week training cycles • Deload week configuration with automatic load reduction • Progressive overload tracking per exercise • Warmup set management • Multiple workouts per day (AM/PM splits) • Untracked workout mode for mobility and warm-ups • Bodyweight and weighted calisthenics support DESIGNED FOR YOU • Clean, intuitive interface • Full accessibility support (VoiceOver/TalkBack) • Works on all screen sizes • Auto-save with crash recovery — never lose a workout • Apple Sign-In and Google Sign-In (optional) Whether you're following Starting Strength, 5/3/1, PPL, or your own program — LiftUr adapts to how YOU train. Download now. Lift heavy. Track everything. Subscription-free.
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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.