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
Block Blast！
Enter the world of Block Blast, where every move is a test of your brain and strategy
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.9
2,711,172 ratings · Top 5%
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 included16 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 Block Blast！: 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
Introduce new game modes and challenges to keep users engaged.
Assumption to check: Repetitive gameplay can lead to boredom.
Validate with people who use this workflow before building.
Hypothesis 2
Implement rewarded ads that users can choose to watch for bonuses.
Assumption to check: Ads can be intrusive and disrupt gameplay.
Validate with people who use this workflow before building.
Hypothesis 3
Enhance social sharing capabilities, allowing users to compete with friends.
Assumption to check: Limited social features for sharing progress.
Validate with people who use this workflow before building.
Hypothesis 4
Add an achievement system and progress tracking to motivate users.
Assumption to check: Difficulty in tracking user progress or achievements.
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
Enter the world of Block Blast, where every move is a test of your brain and strategy. Dive into the thrill of block crush gameplay—watch vibrant cubes explode in color as you solve each puzzle. With fresh daily puzzle challenges that keep your mind engaged and an endless high score system that rewards your best strategies, Block Blast delivers nonstop excitement for casual players and puzzle masters alike. Why You'll Love Block Blast • Daily Puzzle Variety: Every day brings a new puzzle twist, ensuring there’s always something fresh to solve and new rewards to earn. • Block Puzzle Saga: Match colorful blocks on an 8x8 board and enjoy the satisfying cascade of each block crush. • Endless High Score Hunt: Push yourself further with each game—break your own records, and climb higher every time you play. • Casual Yet Challenging: Easy to pick up, but packed with logic-based challenges that sharpen your mind. • Offline Fun: Play anywhere, anytime—no WiFi required. Perfect for a subway ride or while waiting in the car. Features of Block Blast • Strategic Puzzle Gameplay: Drag, place, and match cube blocks on board to trigger chain reactions. • Adventure Mode: Experience progressive levels with unique jigsaw designs and colorful themes. • Daily Puzzle Rewards: Stay motivated with special challenges that refresh your brain every day. • Score Mastery: Compete against friends, share your results, and prove who dominates the endless high score. • Stunning Block Effects: Feel the rush of every block crush with dynamic visuals and relaxing music effects. How to Play • Drag & Match: Place cube blocks on the 8x8 board with precision. • Crush & Score: Complete rows or columns of tiles and watch the block crush effects cascade. • Chase Combos: Plan your moves to unlock massive points and extend your endless high score run. • Stay Strategic: Keep your board clear to make room for bigger plays. Jump into the Ultimate Block Puzzle Saga! Ready for mind-sharpening fun? Take on fresh daily puzzles, master the art of the block crush, and see how far you can push your endless high score. Download Block Blast today and start your adventure! Privacy policy: https://hungrystudio.com/privacyus.html Terms of Use: https://hungrystudio.com/serviceus.html
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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.
