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
Isekai:Slow Life
What the-? Been transported to ISEKAI and turned into an adorable walking mushroom?!
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.5
9,750 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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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 Isekai:Slow Life: 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 varied quests and dynamic events to keep players engaged
Assumption to check: Repetitive gameplay mechanics lead to user fatigue
Validate with people who use this workflow before building.
Hypothesis 2
Integrate multiplayer elements and trading systems
Assumption to check: Limited social interaction features among players
Validate with people who use this workflow before building.
Hypothesis 3
Offer more free rewards and a balanced progression system
Assumption to check: In-app purchases may feel aggressive to users
Validate with people who use this workflow before building.
Hypothesis 4
Create a comprehensive onboarding experience with guided tutorials
Assumption to check: Lack of clear tutorials for new 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
What the-? Been transported to ISEKAI and turned into an adorable walking mushroom?! In this wonderful new world, you will begin by managing and developing a small town while meeting and engaging with various types of beautiful and bizarre characters. Discover unknown lands with them as you wander at your leisure and enjoy the quiet life. -[Make a family in another world and enjoy a relaxing life] Explore fateful encounters with many different races: A gentle vampire nurse, an artistic octopus teacher, a cute siren “drinking companion”...... While away the sweet, relaxing days of ISEKAI life. -[Assemble Your Familiar Squad and Take on Epic Trials ] Transcenders can now explore fantastical locations with extraordinary monsters, and develop them into legendary familiars to break through power boundaries! Increase their stars to metamorphose, and awaken splendid transformations! Bind them to your Fellows and gain power bonuses! Familiar contract strategy + Multi-level metamorphosis + Endless tower challenge: A completely new adventure experience. Build your strongest Familiar team! Start your conquest of Familiars today! -[Explore the continent of ISEKAI and form bonds with various companions] Bond with companions from all trades and walks of life: A cat-eared maid girl, a goblin merchant, a monster hunter... Each companion has their own unique skills and is ready to aid you in exploring the secrets of ISEKAI and building your village. -[Open stores and build a village] All kinds of trades and businesses can flourish in your village: A workshop, a potion store, a tavern, a school... Use your keen business skills to develop the economy of your village, step by step. Grab the opportunities that come your way, take care of the business owners who depend on you, and build the honor and reputation of your very own village. -[Join the Adventurer’s Guild to experience cooperation and challenge] Join a guild or create your own to wander the world of ISEKAI with other fellow adventurers. You could become fast friends, or opponents in heated combat. -[On the road to godhood, every road is meaningful] As your exploration of ISEKAI unfolds, your form and reputation will change and evolve, and before you know it, you won’t just be an ordinary mushroom anymore... The road ahead has many paths, each awaiting your discovery. Come join us on the road to ISEKAI and begin a new life full of challenges and fun! For more information about the game, follow us on: -Facebook:>https://www.facebook.com/isekaislowlife -Discord: https://discord.com/invite/YnKp2UXahQ If you have any advice or feedback for our game, please send an email to: [email protected]
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
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Zustand
react-native-reanimated
expo-linear-gradient
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.
