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
Arc Helper
Arc Helper is the ultimate unofficial companion app for Arc, the intense third-person extraction shooter
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 2.7
7 ratings · Below Average
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.
Build your own version
Build Kit
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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/
Preview a sample Build Kit No email needed
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 Arc Helper: map the core Reference 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
Expand the content library to include more welding techniques and tips.
Assumption to check: Limited content variety and depth
Validate with people who use this workflow before building.
Hypothesis 2
Implement clearer navigation cues and categories for easier access to information.
Assumption to check: Confusing navigation structure
Validate with people who use this workflow before building.
Hypothesis 3
Add community features like forums or Q&A sections to enhance user interaction.
Assumption to check: Insufficient user engagement features
Validate with people who use this workflow before building.
Hypothesis 4
Create a more user-friendly subscription management interface with clear options.
Assumption to check: Poor subscription management
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
Arc Helper is the ultimate unofficial companion app for Arc, the intense third-person extraction shooter. Whether you're planning your loadout, studying enemy tactics, or optimizing your extraction routes, Arc Helper puts comprehensive game knowledge at your fingertips. WEAPONS DATABASE • Complete database of 30+ weapons across 7 categories • Detailed stats including damage, fire rate, magazine size, and reload times • Tier rankings (S, A, B, C) for every weapon • Ammunition compatibility and crafting requirements • High-quality weapon images and descriptions ENEMY BESTIARY • Complete guide to 15 ARC enemy types • Combat strategies and weakness information • Difficulty ratings and behavior patterns • Loot drop information for each enemy type • Boss encounter strategies ITEMS & RESOURCES • Comprehensive materials and components database • Value-per-weight calculations for extraction optimization • Crafting requirements and usage information • Sell values and trading information • Quick reference for all consumables MAPS & LOCATIONS • Detailed information for 4 raid locations • Loot quality ratings for each area • Difficulty levels and environmental hazards • Night raid tips and weather conditions • Strategic points of interest SKILLS SYSTEM • Complete skill tree with all 45 skills • Three categories: Conditioning, Mobility, Survival • Skill requirements and progression paths • Stat effects and gameplay impacts • Skill tree visualization SPERANZA HUB • Complete guide to your home base • Workshop crafting stations (7 stations with upgrade paths) • Trader information and specialty items • Stash management and upgrade costs • Scrappy companion system EQUIPMENT REFERENCE • Augments (Mk. 0 through Mk. 3) • Shield types and statistics • Healing items and quick-use consumables • Equipment load management • Backpack slot optimization TRADERS & ECONOMY • All 5 traders and their inventories • Price guides and purchasing strategies • Blueprint locations and requirements • Quest rewards and progression ADDITIONAL FEATURES • Ammunition compatibility table • Grenades, throwables, and traps guide • Offline access - no internet required • Fast search across all content • Clean, game-inspired interface • Regular updates with new game content Perfect for both new players learning the ropes and veterans optimizing their strategies. All information is organized for quick reference during raids or between matches. DISCLAIMER Arc Helper is an unofficial companion app created by fans for the Arc R community. Arc Raiders is a trademark of Embark Studios. This app is not affiliated with, endorsed by, or sponsored by Embark Studios.
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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
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BUILD KIT DIFFICULTY
Starter
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.
