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
Bloons TD 5
Five-star tower defense with unrivaled depth and replayability
$2.99 · In-app purchases
OVERALL US RANK
#33
Paid · all categories
REVENUE (Est)
$288K/mo
$167K - $409K
RATING
★ 4.8
98,425 ratings · Top 5%
Evidence scope: #33 is the current overall US Paid chart position. 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 Bloons TD 5: 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
Implement a more robust tower balancing system based on user feedback.
Assumption to check: Some users report game balance issues with tower effectiveness.
Validate with people who use this workflow before building.
Hypothesis 2
Offer ad-free versions or better ad management to enhance gameplay.
Assumption to check: Users find the ads intrusive and disruptive.
Validate with people who use this workflow before building.
Hypothesis 3
Regularly add new maps, towers, and challenges to keep the game fresh.
Assumption to check: Limited content updates lead to a stale experience.
Validate with people who use this workflow before building.
Hypothesis 4
Introduce adjustable difficulty settings to cater to various skill levels.
Assumption to check: Difficulty spikes can frustrate players.
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
Five-star tower defense with unrivaled depth and replayability. Now with rewarded leaderboards for even more fun and challenge! The Bloons are back and this time they mean business! Build awesome towers, choose your favorite upgrades, hire cool new Special Agents, and pop every last invading Bloon! Featuring 2 brand new Towers, cool Special Agents, glorious retina graphics, original Tracks and Special Missions, a whole new tier of Specialty Building upgrades, and the powerful Monkey Lab to further upgrade your towers, Bloons TD 5 delivers hours and hours of fun, challenging play to fans and new players alike. Hours and Hours of Awesome Gameplay: * 90+ Tracks * 21 powerful towers with Activated Abilities and 2 upgrade paths * 10 Special Agents * Online Co-op play * Multi-track Odyssey Challenges * Boss Bloon Special Events * 10 Special Missions * 250+ Random Missions * Daily Challenges * New Bloon enemies - tougher Camos, Regrow Bloons, and the fearsome ZOMG * 50+ Game Center Achievements and Challenges * iCloud Support * 3 different game modes * Freeplay mode after mastering a track * 4 difficulty settings and family-friendly theme so anyone can play And that's just the beginning - regular planned updates will keep Bloons TD 5 fresh, fun, and challenging for many months to come. Now it's time to pop some Bloons! Remember to save to iCloud after each victory or purchase to save your progress. iPad version also available - check out Bloons TD 5 HD for full screen UI awesomeness! https://ninjakiwi.com/terms
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
Redux
React Navigation
Firebase
AdMob
BUILD KIT DIFFICULTY
Advanced
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.
