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
CookieRun: OvenSmash
Discover the latest sensation from CookieRun—the franchise beloved by 200 million fans worldwide!
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
8,348 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 CookieRun: OvenSmash: 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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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
Introduce varied levels and challenges to enhance engagement.
Assumption to check: Lack of engaging content and repetitive gameplay.
Validate with people who use this workflow before building.
Hypothesis 2
Implement clear explanations and benefits for in-app purchases.
Assumption to check: In-app purchases can be confusing or feel forced.
Validate with people who use this workflow before building.
Hypothesis 3
Create a comprehensive tutorial for first-time players.
Assumption to check: Difficulty in onboarding new users.
Validate with people who use this workflow before building.
Hypothesis 4
Offer ad-free premium options or timed ad placements.
Assumption to check: Frequent ads disrupting gameplay.
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
Discover the latest sensation from CookieRun—the franchise beloved by 200 million fans worldwide! This real-time battle action reaches thrilling new heights. Welcome to the CookieRun: OvenSmash! Join the Cookies gathering in Platter City Watch as they clash in epic battles to make their wishes come true Step into an urban fantasy world of Cookies like nothing you've ever imagined! Fight with everything you've got to fulfill your wish! 1. Immersive Urban Fantasy Battle it out in a stunning urban fantasy setting! All of Platter City becomes your battlefield as three powerful factions wage war for supremacy. Dive into CookieRun's freshest world yet! 2. Deep Strategic Combat Your position is your strategy! Take on the role of Tanker, Dealer, or Supporter! Master unique combinations and synergies to rule the battlefield. Experience heart-pounding strategic battles where a single skill choice can completely turn the tide! 3. Game-Changing Spell Cards A single card can flip the match in your favor! Transform into giants, summon sky-slicing dragons, and more with powerful spell cards. Split-second decisions control the battlefield and determine victory! Create your own winning strategies and dominate the competition! 4. Express Yourself with Custom Looks Show off your style and stand out from the crowd! Going for cute? Slick? Completely one-of-a-kind? Dozens of looks and items let you create the perfect Cookie to match your vibe! Become the trendiest Cookie that everyone can't help but notice! 5. Connect in the Plaza Meet up with other Cookies in this special social hub! Form parties in the plaza and gear up for epic battles together. Enjoy both intense combat and chill hangout time with friends. Experience CookieRun: OvenSmash's unique blend of action and social play! ※ Service Access Permission Guide [Required Access Permissions] None [Optional Access Permissions] Notifications: For updates on in-game events, benefits, and more You can enjoy the game without granting these permissions Note: Some features may be limited if optional permissions aren't granted [How to Manage Permissions] Settings > Privacy > Select permission > Toggle on/off as desired ※ Playing as a guest? Your game data will be lost if you uninstall the app. Developer Contact: Devsisters Seoul, Republic of Korea, Gangnam-gu Dosan-daero 327, Sinsa-dong, SGF Cheongdam Tower 06019 2118797881 1729215126274312 Gangnam-gu Office Phone: +82-2-1899-3674
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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
Redux
Firebase
react-navigation
react-native-reanimated
BUILD KIT DIFFICULTY
Expert
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.
