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.
Take the beloved Out of the Park Baseball series with you wherever you go
$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 OOTP Baseball 27 Go!: map the core Games 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: Complexity in managing player stats and updates during games
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited onboarding for new users unfamiliar with baseball management
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: In-app purchases can be confusing for users
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Performance issues during high-load simulations
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.
Take the beloved Out of the Park Baseball series with you wherever you go. The award-winning baseball simulation game is now in your hands wherever you are in the world! Manage teams, control any franchise in 2026 or throughout MLB History, build and draft your Perfect Team, build a completely fictional baseball universe and so much more. You can oversee your league at a high level or play out each game in the gorgeous 3D game mode, managing play by play or even pitch by pitch. OOTP has it all covered. PLAY YOUR WAY · Franchise Mode: A single-player oriented mode where you can run your favorite MLB, KBO, international or fictional baseball organization. 2026 MLB and 2026 KBO seasons - with accurate teams, schedules, and rosters - are included! Plus! 1934, 1955, and 2008 MLB seasons also included · Perfect Team Mode: Build a dynasty in this online mode competing against players around the world MANAGE MLB HISTORY · Gain access to historical MLB leagues and rosters from 1901 - 2025 · Simulate any and all MLB scenarios and games that you have dreamt of · Manage all on-field decisions and strategies · Draft, scout, trade, and sign players to build a powerhouse OFFICIAL MLB & KBO LICENSES · Full 2026 rosters from both MLB & KBO franchises free with game purchase · Includes full MLB and MiLB rosters CREATE YOUR PERFECT TEAM · Create your own custom team to pit against players around the world · Cross-platform compatibility with Out of the Park Baseball 27 users · Pull and collect player cards from the vast player pool that is available for use · Compete in tournaments against other players to see who has the best team NEW THIS YEAR · All New Advanced Stats: Dozens of new stats and percentile rankings including run values, expected stats, hard hit percentages, and dozens more! · All New Difficulty Settings: Play your way with this deeply integrated new setting · AI Improvements: AI trading system overhaul for realistic trades, improved foreign signings for KBO, and more! · User Experience Improvements: New prospect pipeline, sortable player shop, and more improves user experience · Perfect Team: Updated Tournament management, types, and rewards · Perfect Team: All new Hall of Fame Artifacts to boost cards · And more! OOTP 27 Go! comes with the 1934, 1955, and 2008 historical MLB seasons for FREE! All others (1901-2025) available for purchase. Major League and MiLB trademarks and copyrights are used with permission of Major League Baseball. MLB Players, Inc. is the business arm of the Major League Baseball Players Association. The Major League Baseball Players Association is the collective bargaining representative for all professional baseball players of the 30 Major League Baseball teams. MLB Players, Inc. serves as the exclusive group licensing agent for all commercial business interests and licensing activities involving active Major League and Minor League Baseball players. Follow @MLBPA on Instagram and X. Out of the Park Developments © Copyright 2026. All Rights Reserved * Access permission notice for gameplay · STORAGE: The permission is required to store game data and will not access personal files such as photos · MEMORY: Recommended 2 GB RAM minimum · PHONE: The permission is required to proceed with in-game events and rewards and will not affect calls ※ You'll be able to enjoy the service except features related to above authorities even if you don't give permission to the above. • Language support: English, 한국어 • Items are available for purchase in this game. Some paid items may not be refundable depending on the type of item. • For Com2uS Mobile Game Terms of Service, visit http://www.withhive.com/ - Terms of Service : http://terms.withhive.com/terms/policy/view/M9/T1 - Privacy Policy : http://terms.withhive.com/terms/policy/view/M9/T3 • For questions or customer support, please contact our Customer Support by visiting https://support.ootpdevelopments.com/portal/en/home
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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.