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
Marathon Meta
Marathon Meta gives you the tactical advantage to make split-second decisions on the fly
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 2.0
1 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.
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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 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 Marathon Meta: 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
Include social sharing features and community aspects.
Assumption to check: Limited user engagement features
Validate with people who use this workflow before building.
Hypothesis 2
Offer tailored training plans based on user performance.
Assumption to check: Lack of personalized training plans
Validate with people who use this workflow before building.
Hypothesis 3
Integrate with popular fitness trackers for automatic workout logging.
Assumption to check: No integration with wearables
Validate with people who use this workflow before building.
Hypothesis 4
Simplify user onboarding and add guided tours.
Assumption to check: Difficult navigation for new users
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
Marathon Meta gives you the tactical advantage to make split-second decisions on the fly. Stop guessing and start optimizing your haul with the community's most reliable companion app. THE ARSENAL: META AT A GLANCE Never wonder if a weapon is worth the weight again. Access a comprehensive database of every weapon, ranked from Meta S to D-Tier. Live Stats: View Fire Rate, Range, Handling, and raw DPS for every firearm. Deep Tech Specs: View compatible Optics, Barrels, and Chips to maximize your performance. INSTANT VERDICTS Make the right call every time with our color-coded Verdict system: KEEP: Essential high-tier gear. SELL: Dead weight—dump it for Scrip. STASH/EXTRACT: Know the market value before you risk a run. MARKET VALUATION Know your worth. Every weapon displays its current market value in Scrip, helping you prioritize high-value extractions to fund your next drop. ZERO LATENCY (Offline Support) The zone doesn't pause for a loading screen. All data is bundled locally on your device. Whether you’re mid-session or in a dead zone, the intel is instant and 100% offline. Coming Soon to the Rig: Architect Mode: The Loadout Builder is being calibrated for the latest Runner Shells. Market Loot Guide: Full maps and item-specific extraction data. Marathon Meta is an unofficial fan companion app. Not affiliated with or endorsed by Bungie Inc. Marathon™ is a trademark of Bungie Inc.
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
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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.
