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
Video Walkthrough for Cities Skylines
This is an unofficial video walkthrough for Cities Skylines.
$3.99
PRICE
$3.99
No in-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.1
15 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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Combine features and design from your favorite apps.
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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 included15 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 Video Walkthrough for Cities Skylines: 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
Competitive pricing with generous free tier
Assumption to check: Expensive subscription
Validate with people who use this workflow before building.
Hypothesis 2
Focus on most-requested features first
Assumption to check: Missing features
Validate with people who use this workflow before building.
Hypothesis 3
Optimize for 60fps, fast load times
Assumption to check: Poor performance
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
This is an unofficial video walkthrough for Cities Skylines. This app collects 110+ guide, strategies, city structures editor examples, recommended mods, tips and tricks, and especially a full city building episode from experienced players, provides you the information for exploring the game and enhancing your skill, let you enjoy the game even more. Inhabit a city where you define the rules. Cities: Skylines invites you, the Mayor, to create the city of your dreams in a sprawling landscape dominated by cloud hugging structures and jaw dropping architectural marvels. It offers landscapes and maps with endless sandbox gameplay and new ways to expand your city. The game also boasts an astonishing realistic transport system, let you experience the daily traffic problems in a big city, challenges you to solve the problems cleverly. Besides, this game includes the ability to mod the game and suit your play style, making this the definitive city building simulation. You’re only limited by your imagination, so take control and reach for the sky! Some words from the App producer: if you are a fan of city building simulation, we 100% fully recommend you to try this game and you will enjoy this stunning experience. To share our fun, we produce this unofficial video walkthrough for Cities Skylines. Currently we collected quite a number of walkthrough and tips videos, about 100+ videos currently. Some of the videos are comparatively larger than the other game videos in our video walkthrough series. Though the download time will be longer, the videos will not stop in the middle of an episode, so as not to interrupt your fun in learning city building techniques. When we discover other interesting information, we will continue to update the app. Disclaimer: Please note that this is NOT the game Cities Skylines itself, NOR an official walkthrough. All trademark and copyright belongs to Paradox Interactive and Colossal Order. Copyright of all characters, locations, images and video game content belong to their respective owners, using this walkthrough is only within the scope of fair use guidelines.
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
Supabase
RevenueCat
BUILD KIT DIFFICULTY
Intermediate
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.
