App Overview

Softball DP/Flex Simulator icon

Softball DP/Flex Simulator

Travis Owen · Sports

Introducing the first and only DP/Flex Softball Simulator

$9.99 · In-app purchases

PRICE
$9.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
5.0
5 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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A product spec, screen plans, and build steps for your coding agent.

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What's included17 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.

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.

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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Quick prompt

> SELECT BUILD PLATFORM:

Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

// RORK SYSTEM PROMPT
Rork plan preview for Softball DP/Flex Simulator: map the core Sports 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 social sharing and community features.

Assumption to check: Lack of user engagement features

Validate with people who use this workflow before building.

Hypothesis 2

Expand strategy database and allow user-generated content.

Assumption to check: Limited strategy options

Validate with people who use this workflow before building.

Hypothesis 3

Implement a more user-friendly navigation flow.

Assumption to check: Confusing navigation structure

Validate with people who use this workflow before building.

Hypothesis 4

Add user feedback options and analytics for improvement.

Assumption to check: No analytics or feedback mechanisms

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

Introducing the first and only DP/Flex Softball Simulator. This app is designed to help you fully understand the interworkings of the DP/Flex rule, per the official rulebook (collegiate, high school, club, & international). Enter line-ups and make substitutions which the app will confirm are allowed (or not allowed) before you take the field, so that you can be prepared & confident when it comes to game time. -Create your own line-up with custom player names -Prep for games by running your substitutions through this app (or use in the dugouts, where allowed) -Save your line-ups for future use -Access to videos, such as why it's advantageous to enter your DP into the field and create an OP This app follows the basic premises of the DP/Flex Rules: -Flex is always listed 10th on the lineup card, and can only enter as a batter if for the DP. -To use a DP/Flex, must start the game with a DP/ Flex (cannot add once the game starts). -Once any player leaves the game (out of the lineup), they have used a sub. Only starters may re-enter (one time) after being subbed out. Thus, if flex bats for DP, this counts as a sub for the player in the DP spot. -The DP spot is initially listed as only hitting, however they can enter the field and play a position, turning the player they entered into the field for, into the "OP" (Offensive Player), who now just hits. The flex cannot hit for the OP, still can only hit for the DP.

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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
Zustand
React Navigation
React Native Paper
React Native Modal
BUILD KIT DIFFICULTY
Intermediate

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.