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
Bulldozer Master: Crush & Mine
Get behind the wheel of powerful bulldozers, grab your pickaxe, and dig your way to a mining empire!
Free
PRICE
Free
No in-app purchases
BUSINESS MODEL
Free
No overall Grossing estimate available
RATING
★ 4.5
10,246 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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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 included
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 Bulldozer Master: Crush & Mine: 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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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
Get behind the wheel of powerful bulldozers, grab your pickaxe, and dig your way to a mining empire! In Bulldozer Master, you explore rich mining zones, smash through ores, collect rare resources, and grow one small dig site into a mining empire that keeps earning money while you are offline. DIG UP EVERY MINING ZONE Drive powerful machines, click to crush stone, and dig out ores, gold, gems, and rare resources buried deep underground. Every dig reveals something new to discover. SELL RESOURCES & MAKE MONEY Trade your mined resources for cash, then reinvest that money to unlock bigger zones with bigger rewards. UPGRADE EVERYTHING Upgrade your bulldozer, upgrade your tools, and upgrade your crew to dig faster. A smart upgrade strategy turns a slow site into a resource machine, and that upgrade loop is what every idle tycoon fan loves. IDLE PROGRESS, EVEN OFFLINE Your mine keeps working while you are away. Come back to collect offline cash, resources, and idle rewards, then jump into hands-on action whenever you want. True idle mining, zero pressure. BUILD YOUR MINING TYCOON EMPIRE Manage your workers, build new facilities, and manage every zone like a real mining tycoon. Idle tycoon simulation, arcade action, and tycoon empire building in one game. EXPLORE & DISCOVER Explore new regions on a treasure-hunting adventure, discover rare ore veins, and take on challenge goals for extra rewards. Whether you love idle games, tycoon simulation, or the satisfying crunch of smashing rock, Bulldozer Master delivers pure fun. Every player starts with one bulldozer and one dig site. How big will your mining empire grow? Start digging now and become the ultimate Bulldozer Master!
Written user reviews are not shown here. Check current App Store reviews >
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
Offer affordable ad-free tier ($2.99)
Assumption to check: Too many intrusive ads
Validate with people who use this workflow before building.
Hypothesis 2
Cosmetic-only purchases, skill-based progression
Assumption to check: Pay-to-win mechanics
Validate with people who use this workflow before building.
Hypothesis 3
Add battery saver mode, optimize rendering
Assumption to check: Battery drain
Validate with people who use this workflow before building.
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
Unity
Firebase
AdMob
RevenueCat
BUILD KIT DIFFICULTY
Not assessed in a Build Kit yet.
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.
