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
NARUTO: Ultimate Ninja STORM
[Warning] Please Read Before Purchasing
$12.99 · In-app purchases
PRICE
$12.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.7
1,412 ratings · Top 15%
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 included16 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 NARUTO: Ultimate Ninja STORM: 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 more skins and upgrades to enhance personalization.
Assumption to check: Limited character customization options
Validate with people who use this workflow before building.
Hypothesis 2
Implement a more robust matchmaking algorithm.
Assumption to check: Inconsistent matchmaking in online battles
Validate with people who use this workflow before building.
Hypothesis 3
Add variety through different game modes or challenges.
Assumption to check: Repetitive gameplay mechanics
Validate with people who use this workflow before building.
Hypothesis 4
Provide more free content to balance the monetization.
Assumption to check: High in-app purchase dependency
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
[Warning] Please Read Before Purchasing No refunds (including exchanges for other products, services, etc.) are available after purchase, regardless of the reason. Please ensure that your device is compatible via the app's Contact page (link below). https://bnfaq.channel.or.jp/title/3152 You are purchasing a license for digital goods. For full terms and conditions, please see the License Agreement below. [Game Summary] A Naruto game full of 3D competitive action! NARUTO: Ultimate Ninja STORM finally makes its way to smartphones! Experience the stories and battles of Naruto's childhood through beautiful graphics! Game Content Ultimate Mission Mode Relive the stories and famous battles from Naruto's childhood! You can freely move around the Hidden Leaf Village and take on missions and mini games! Free Battle Mode In Free Battle Mode, you can choose from 25 unique characters from Naruto's childhood and 10 support characters to enjoy a variety of powerful ninjutsu actions and battles! Changes for the App Easily activate ninjutsu, ultimate jutsu, and other actions with a tap! Even those playing the series for the first time can confidently enjoy the game! Plus, the following additional features and improvements have made the game easier to play: - New auto-save feature - New control mode selection for battle (casual/manual) - New battle assist feature (casual only) - Improved controls for battle and free movement - New retry feature for missions - Improved mini-game UI - Improved tutorial Play Notes - This game contains violent content. - Please pay attention to how long you play and avoid excessive gameplay. - 本遊戲部份內容涉及暴力情節 - 請注意遊戲時間,避免沉迷 [Number of Players] This is a single-player game only. [Storage] To download this app, you will need at least 3.5 GB of free space. When downloading, please ensure you have a strong internet connection and/or Wi-Fi environment. *Depending on your device, you may need more than the suggested storage amount. [Online] - There is no online battle mode. - Aside from the initial game download, you can play offline. - An internet connection is required to back up and transfer game data. Bandai Namco Entertainment Inc. Website: https://bandainamcoent.co.jp/english/ By downloading or installing this app, you agree to the Bandai Namco Entertainment Terms of Service. Terms of Service: https://legal.bandainamcoent.co.jp/terms/ Privacy Policy: https://legal.bandainamcoent.co.jp/privacy/ This application is distributed under the official rights from the license holder. ©2002 MASASHI KISHIMOTO ©Bandai Namco Entertainment Inc. Powered by "CRIWARE". CRIWARE is a trademark of CRI Middleware Co., Ltd.
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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
Firebase
Redux
React Navigation
Axios
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.
