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
Burn Boot Camp
At Burn Boot Camp, we believe it's not what you lose; it's what you gain
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.9
15,181 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/
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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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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 Burn Boot Camp: 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
Allow users to customize their workout plans based on preferences.
Assumption to check: Limited personalization for workouts
Validate with people who use this workflow before building.
Hypothesis 2
Implement offline video download feature for workouts.
Assumption to check: No offline access to workout videos
Validate with people who use this workflow before building.
Hypothesis 3
Introduce a tiered subscription model with more accessible options.
Assumption to check: Subscription model can deter users
Validate with people who use this workflow before building.
Hypothesis 4
Enhance social features to allow users to share progress and challenge friends.
Assumption to check: Inadequate social 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
At Burn Boot Camp, we believe it's not what you lose; it's what you gain. Strength. Confidence. Community. We empower women and their families through challenging workouts, nutritional support, 1:1 Focus Meetings, and complimentary Childwatch, all with the encouragement of the best fitness community in the world. The app is home to Burn Boot Camp Live, our signature 45-minute boot camp live-streamed Monday - Friday at 9 AM EST. Work out at home or on vacation with Burn Boot Camp On Demand. Access hundreds of videos featuring content like 20-minute Quick Camps, Form University, Kids Camps, and recovery videos like stretching, foam rolling, and yoga. Our next-generation app will provide users with exactly what they need and expect: an easy, convenient way to get the very best in workouts, nutrition, activewear, equipment, and more. Here's what else you'll experience in our app: · View our weekly protocol, book Camps, Body Scans, and Focus Meetings, and book multiple children in our complimentary Childwatch. · Keep track of Camp streaks and lifetime Camps in our Keep Moving Club. · Start a trial membership, purchase single gym or universal memberships, or no-commitment fit cards. · Access 5, 10 & 15-minute workouts like Burst Training and Super Finishers in Burn On Demand. · Purchase Burn Boot Camp activewear and nutrition like Afterburn Protein, Ignite pre-workout, Replenish post-workout, and Creatine.
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.
SUGGESTED BUILD STACK
React Native
Expo
Supabase
React Navigation
Zustand
expo-video
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.
