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
Cultist Simulator
SEIZE FORBIDDEN TREASURES
$0.99 · In-app purchases
PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.8
4,236 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 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 Cultist Simulator: 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 faster gameplay options or time-limited events.
Assumption to check: The game can be slow-paced and may drag on for some users.
Validate with people who use this workflow before building.
Hypothesis 2
Add an engaging tutorial or onboarding process to guide new players.
Assumption to check: Limited tutorials can leave new players confused.
Validate with people who use this workflow before building.
Hypothesis 3
Simplify the UI and introduce customizable layouts.
Assumption to check: The UI can feel cluttered with too many elements on screen.
Validate with people who use this workflow before building.
Hypothesis 4
Ensure fair pricing and provide clear value for in-app purchases.
Assumption to check: In-app purchases may frustrate users if not balanced well.
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
SEIZE FORBIDDEN TREASURES. SUMMON ALIEN GODS. FEED ON YOUR DISCIPLES. BE WARNED. This game has no tutorial - part of the challenge is figuring out how to play. It's hard, but keep trying, and you'll master it. Good luck! In this infamous roguelike narrative card game, play as a seeker after unholy mysteries in a 1920s-themed setting of hidden gods and secret histories. Become a scholar of the unseen arts. Craft tools and summon spirits. Indoctrinate innocents. Seize your place as the herald of a new age. Cultist Simulator was first released on PC and has more than 200,000 players all over the world. Now we’re bringing the cosmic mysteries of Cultist Simulator to mobile. • Challenging roguelike gameplay - There is never only one history. Cultist Simulator doesn’t hold your hand. Experiment, expire and transcend death with a story-driven legacy system. Over time you’ll learn enough to wrestle the game to its knees. • Intense, immersive narrative – Combine cards to tell your own story. A hefty novel’s worth of choice-based storytelling, from the creator of Fallen London and Sunless Sea. There are many paths through this game of ambition, appetite and abomination, and many ways your tale can end. • A rich Lovecraftian world – Corrupt your friends and consume your enemies. Search your dreams for sanity-twisting rituals. Translate grimoires and glean their lore. Penetrate the realm of the Hours and win a place in their service. Cultist Simulator brings the peripheral horror of Lovecraft’s tales to an entirely new setting. Expand your knowledge with the DLCs: New Legacies, New Ascensions, New Mechanics... • The Dancer - Join the Bacchanal • The Priest - Knock, and Ye Shall Be Opened • The Ghoul - Taste of the graveyard's fruit • The Exile - Some there are who will not yield If you encounter any issue with the game, please click on “Contact us” at the bottom of this page and give us as many details as possible regarding the issue and your device: https://playdigious.helpshift.com/hc/en/11-cultist-simulator/?p=ios
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
Axios
react-navigation
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.
