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.
Stop just playing catch
$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.
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 Bullpen vs: map the core Sports 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: Difficulty in finding specific players
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited player statistics
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Subscription management is unclear
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of social sharing features
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.
Stop just playing catch. Turn pitching command into a game with our array of virtual hitters, training modes, game-like scenarios, challenges, mini-games and live game command tracking. Every outing creates a report that highlights strengths and weaknesses. Take the guess work out of throwing strikes. You'll know exactly which pitches and which locations to work on next. With app purchase, all modes are already built-in. Start pitching today! With 6 distinct modes, pitchers always have their next challenge: Compete: Both single player and head-to-head with a friend. You choose your opponent from pre-built, custom or promotional teams. Assign your arsenal. You’ll face virtual hitters with their swing rates, contact rates, hot zones, and tendencies! Learn how to compete while you command the strike zone. Scenarios: Practice specific game situations. You’ll watch your success grow over time as the app keeps track of your progress. Get out of jams, hold leads, handle challenging hitters – you’ll never stop growing and having fun. Command Training: No competition here, except your own growth. Use the strike zone to measure your misses. Over time your command will improve as you learn to focus on each pitch, reducing how far you miss. Challenges: Build pitching consistency by getting on a streak or practicing specific sequences commonly used by pitchers of all levels and abilities. There is always something to get better at here. Even the big-leaguers find something to be more consistent with. Game Tracking: Is it live competition day? Have someone track your pitches and locations from the stands. You’ll be able to use the complete analysis to look at where you can improve for your next game. Mini-Game: Everyone can find something they’ll like here from big leaguers to tee-ballers. Find some friends and play Tic-Tac-Toe, Whack-a-Mole, Battleship, Darts, or Territory War. There are a variety of game modes and difficulty levels. Create Custom Teams and Hitters Have you ever wanted to pitch against your own team? Program them in so you can get those fools out. Create your own team of all-stars, your favorite MLB team, a historic roster – the skies the limit! Understand Yourself with our Analysis After each outing not only can you access a full report of command, broken down by pitches and locations, but you can share it with whoever might be interested in it – coaches, teammates, pitching coach, a parent, scouts or any baseball nerd. Use the analysis in your next session as you customize what comes next. You have full control now!
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.