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.
The Award-Winning App for golf enthusiasts is now even better
Free · 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.
Kit ready. Verify your email to download it.
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.
JavaScript is required to complete mailbox verification.
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for The Stack System: 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.
Preview ready. Verify your email to reveal and copy the full prompt.
JavaScript is required to complete mailbox verification. Return to this prompt preview.
Affiliate link: CloneChart may earn a commission at no extra cost
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 workout variety
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: No social features
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Basic nutrition tracking
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of personalized plans
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.
The Award-Winning App for golf enthusiasts is now even better. Stack your most important golf skills and enjoy longer drives, closer wedges, and fewer putts. TheStack App has 3 main modes: Speed Training, Wedging, and Putting. STACK SPEED TRAINING ($99/year) powers distance gains through customized, variable inertia speed training - the most efficient way for a golfer to increase their clubhead speed. Includes full access to all app features: Stack Putting, Wedging, and the Learning Library. TheStack hardware is required. STACK WEDGING (30-day free trial, $59/year) delivers a science-based approach to improving your distance control from 140 yards and in. Practice sessions automatically adapt to your skill level for maximum effectiveness. The Stack Radar is required for this feature. STACK PUTTING (30-day free trial, $59/year) is like having a Tour putting coach in your pocket. Gamified sessions and deep analytics help you make more putts. **STACK WEDGING OVERVIEW** Stack Wedging uses a science-based approach to sharpen distance control from 140 yards and in. After a Baseline session, the app creates personalized, gamified practice. In Premier Mode, the App calls out distances and scores you in real-time using our proprietary scoring system based on Strokes Gained data. See how your wedges Stack up with 35 increasingly difficult challenge levels and dozens of valuable insights to help you start wedging it closer. Creative Mode lets you design your own wedge combines, customize clubs, targets, rounds, and challenge friends in real-time with the Compete feature. **STACK PUTTING OVERVIEW** Stop wasting time on the putting green. With focused 15-minute putting sessions, Premier Mode guides you through 18 realistic holes. Enter data easily via Voice or Pocket Mode. Track performance with spider charts, shot plots, and bar graphs. Compare against peers by handicap and get insights into your putting strengths and weaknesses. Creative Mode lets you build your own putting combines or choose from popular presets. Ideal for indoor greens or focusing on specific putting skills. On Course Mode provides detailed putting analytics from real play. Record Aimpoint data and more with better granularity than ShotLink. **STACK SPEED TRAINING** Over 55,000 golfers of all skill levels and handicaps have enjoyed customized variable inertia speed training, which is the most efficient way for a golfer to increase their clubhead speed. Speed training algorithms power customized dynamic programming borne from years of research by leading sport scientist, Dr. Sasho MacKenzie. To being, you’ll need TheStack hardware and a compatible Speed Radar. Payment is charged to your iTunes Account after purchase or trial. Subscriptions auto-renew unless canceled at least 24 hours before renewal. Manage auto-renewal in Account Settings. Unused trial time is forfeited upon purchase. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula
Written user reviews are not shown here. Check current App Store reviews >
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.