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
chronalife
ChronaLife is a deep single-player life simulator where every choice can change your story.
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.3
65 ratings · Top 30%
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 chronalife: 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 seasonal or themed challenges to keep content fresh.
Assumption to check: Limited user engagement over time due to repetitive challenges
Validate with people who use this workflow before building.
Hypothesis 2
Offer a free trial or freemium model with limited features.
Assumption to check: Monetization may deter users due to upfront cost
Validate with people who use this workflow before building.
Hypothesis 3
Incorporate social sharing and leaderboard features to enhance competitiveness.
Assumption to check: Lack of social features for competition
Validate with people who use this workflow before building.
Hypothesis 4
Implement cloud syncing to allow users to track their progress seamlessly.
Assumption to check: Difficulty in tracking progress across devices
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
ChronaLife is a deep single-player life simulator where every choice can change your story. Create a character, age up year by year, and decide who you become. Build a family, chase fame, go to school, start a career, invest, gamble, run businesses, enter politics, fight in the ring, take someone to court, commit crimes, or leave behind a legacy. Every life can go somewhere different — stable success, total chaos, a legendary rise, or a complete disaster. WHAT YOU CAN DO - Age up year by year and watch your choices shape your life - Build relationships, date, marry, start a family, and manage friendships - Go to school, choose careers, earn promotions, or completely change paths - Take on the world's toughest exams — the Bar, USMLE, CFA, UPSC, Gaokao, and more — to unlock elite careers - Buy homes, run your household, manage money, and track your net worth - Invest in stocks and crypto through in-game simulation systems - Start businesses, hire teams, manage executives, and grow an empire - Chase fame through acting, music, creator careers, athletics, and more - Fight your way up in Boxing and MMA, or start martial arts as a kid and go pro - Run for political office from local races to Senator, Governor, and President - File lawsuits, defend yourself in court, and survive the criminal justice system — bail, plea deals, trials, and appeals - Take risky paths through crime, mafia, prison, casino, sportsbook, and lottery systems - Serve in the military and climb the ranks from enlistment to officer - Use multiple save slots and Time Machine checkpoints to branch your story DEEP LIFE SIMULATION ChronaLife connects dozens of systems into one save. Your health, money, family, career, reputation, relationships, home, legal record, choices, and random life events all shape the story you create. REPLAYABILITY No two lives have to play the same. Try a safe life, a rich life, a chaotic life, a famous life, a political life, a criminal life, a fighter's life — or something completely unexpected. BUY ONCE AND PLAY ChronaLife is built as a paid life simulator with no subscription required. SIMULATION NOTICE Stocks, crypto, casino, sportsbook, and lottery are in-game systems only. They do not involve real-money gambling, real-money investing, or investment advice. Optional: sign in with email to back up saves to the cloud across devices.
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
Firebase
Redux
Axios
React Navigation
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.
