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
Built Workout
built v4.3 – your complete fitness community + premium features
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 5.0
8 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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Build Kit
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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/
Preview a sample Build Kit No email needed
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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Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Built Workout: 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
Incorporate AI-driven recommendations based on user performance and goals.
Assumption to check: Lack of personalized workout plans
Validate with people who use this workflow before building.
Hypothesis 2
Add social challenges and leaderboards for community engagement.
Assumption to check: Limited social features
Validate with people who use this workflow before building.
Hypothesis 3
Simplify UI elements to improve usability and focus.
Assumption to check: Interface clutter
Validate with people who use this workflow before building.
Hypothesis 4
Enhance data visualization for better tracking of fitness metrics.
Assumption to check: Inadequate progress tracking
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
built v4.3 – your complete fitness community + premium features built combines workout tracking with a fitness community. track your progress, connect with others, and stay consistent with your training. smart workout tracking - log sets, reps, weight, and rest time - create custom routines or generate them with ai - browse 200+ exercises with visual guides - built-in rest timer and performance history - secure cloud sync across devices social fitness community - share workout posts with progress photos - follow friends and discover new routines - like, comment, and connect with other lifters - build your fitness profile and track achievements ai-powered training - personalized workout recommendations - exercise suggestions based on your history - strength analytics and progress insights new: built premium unlock advanced features to take your training to the next level: - live recovery tracking with real-time muscle updates - enhanced ai coach for personalized workout advice and form tips - advanced progression analytics and training insights built transforms scattered workout notes into organized training with community support. track your lifts, connect with others, and build consistency—with optional premium features for serious lifters. ready to get stronger? see you in the app. --- subscription terms & legal by subscribing to built premium, you agree to our terms of use and privacy policy: terms of use (eula): https://charming-raindrop-1439f0.netlify.app/terms-of-service.html privacy policy: https://charming-raindrop-1439f0.netlify.app/privacy-policy.html subscription information: • payment charged to apple id at confirmation of purchase • subscription automatically renews unless canceled at least 24 hours before period end • account charged for renewal within 24 hours prior to end of current period • manage or cancel subscriptions in account settings after purchase built premium plans: • annual: $23.95/year (includes 7-day free trial) • monthly: $3.99/month (includes 7-day free trial) cancel anytime through your apple id account settings.
Written user reviews are not shown here. Check current App Store reviews >
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
Advanced
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.
