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
MapleStory M: Fantasy MMORPG
▶ Explore the essence of the best anime MMORPG game ◀
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
31,389 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 should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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.
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 MapleStory M: Fantasy MMORPG: 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
Implement a more balanced in-game economy and rewards system.
Assumption to check: In-game purchases can be expensive and frustrating for players.
Validate with people who use this workflow before building.
Hypothesis 2
Optimize assets and loading screens for faster transitions.
Assumption to check: Long loading times during map transitions.
Validate with people who use this workflow before building.
Hypothesis 3
Enhance friend and guild systems with more interactive features.
Assumption to check: Limited social features for player interaction.
Validate with people who use this workflow before building.
Hypothesis 4
Diversify quest types and add dynamic events.
Assumption to check: Repetitive quest structure can lead to boredom.
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
▶ Explore the essence of the best anime MMORPG game ◀ Adventurer! Your journey across the Maple World begins now in MapleStory M, the iconic gacha fantasy mobile game. From Henesys and Kerning City to the sky-high Ludibrium—battle through beautiful 2D worlds that combine the nostalgia of classic MMORPGs with the thrill of modern gacha systems. Challenge endless content like Star Force Fields, Mu Lung Dojo, Monster Park, Story Exploration, and Kerning M Tower to grow your hero to greatness in this fun MMORPG game. ________________________________________ ▶ Customize your own unique character ◀ Whether you’re a MapleStory veteran or a new MMORPG mobile gamer, this anime RPG lets you stand out. From stylish outfits and fantasy hair dyes to adorable pets—create your story your way. ________________________________________ ▶ Stronger together: Multiplayer MMORPG action ◀ Form guilds, go on co-op boss raids, and climb leaderboards in true MMORPG fashion. Whether you're here for anime, fantasy, or social adventure, MapleStory M has it all. ________________________________________ ▶ Auto-battle through gacha-rich dungeons—build your strength anytime, anywhere in this anime fantasy world! ▶ Enjoy anime, mobile RPG combat, and deep character growth all in one gacha-friendly MMORPG! ▶ With constant updates and fantasy events, the adventure never ends in MapleStory M! ▶ Download now and rediscover why this anime MMORPG is the best mobile fantasy experience today! ■ Support & Community Are you having problems? Contact our 1:1 Support in-game or send us an inquiry at [email protected] [For the best gaming experience, MapleStory M requires OS 15.0, CPU dual-core and RAM 1.5GB or higher. Some devices under the specification may have difficulties running the game.] Follow us on our official communities to get the latest news and updates! Facebook: http://www.facebook.com/PlayMapleM Terms of Service: http://m.nexon.com/terms/304 Privacy Policy: http://m.nexon.com/terms/305 ■ App Permissions Information In order to provide the below services, we are requesting certain permissions. [Essential Permission] Camera: Taking screenshots to help with customer service inquiries Photos: Attaching screenshots for customer service [Optional Permission] IDFA: Custom Ad Provision and Service Usage Analysis Microphone: To record a video clip and enable an in-game voice chat system [Permission Management] ▶ Settings > Privacy > Select the permission
Written user reviews are not shown here. Check current App Store reviews >
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
React Navigation
react-native-maps
Firebase
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.
