App Overview

Hay Day icon

Hay Day

Supercell · Games

Welcome to Hay Day, the fun farm simulator game! Build a farm, go fishing, raise animals, and explore the Valley

Free · In-app purchases

PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
654,647 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 included16 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.

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.

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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Quick prompt

> SELECT BUILD PLATFORM:

Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

// RORK SYSTEM PROMPT
Rork plan preview for Hay Day: 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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App evidence

Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.

Screenshots

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App Store description

Welcome to Hay Day, the fun farm simulator game! Build a farm, go fishing, raise animals, and explore the Valley. Farm with friends and decorate your own slice of country paradise. Farming has never been easier! Grow crops like wheat and corn in this farm simulator, and even though it never rains, they never die. Harvest and replant seeds to multiply crops, then make goods to sell. Feed your animals to produce eggs, bacon, dairy, and more to trade with neighbors or fill truck orders for coins. This farming simulator is perfect for players who love animals, farming, and trade! Grow your farm simulator empire like a true tycoon. Expand with a Bakery, BBQ Grill or Sugar Mill to sell more goods. Build a Sewing Machine and Loom to create cute outfits or a Cake Oven to bake delicious cakes. Customize your farm and decorate with a wide variety of items. Build your dream farm step by step, raising animals, farming crops, and designing your land. Trade and sell items by truck or steamboat. Trade crops, fish, and fresh goods from your animals, and share resources to gain experience and coins. Become a successful farming tycoon with your own Roadside Shop. Expand your farming simulator experience and play with friends. Join a neighborhood, or create your own with up to 30 players. Exchange tips and help each other create amazing farms! Play with friends in this farming simulator to build, trade, and fish together. Hay Day is free to download and play, however, some game items can also be purchased for real money (including random items). If you don't want to purchase game items for real money, please disable in-app purchases in your device's settings. A network connection is also required. Hay Day Features: Peaceful farm simulator - Farming is easy on this ranch simulator – get plots, grow crops, harvest, repeat! - Customize your family farm & make your own slice of paradise - Trade and sell – become a farm tycoon! Crops to grow & harvest: - Crops like wheat and corn never die in this farm simulator - Harvest and replant, or use crops like wheat to make bread - Trade and sell your crops to be a farming legend! Raise animals in-game: - Meet quirky animals! - Rear chickens, horses, cows, and more - Pets like puppies, kittens, and bunnies can be added to your farm Places to visit: - Fishing Lake: Repair your dock and cast your lure to fish - Town: Repair the train station and fulfill visitor orders - Valley: Play with friends in different seasons and events - Fishing is key to your farming adventure – fish, farming, and trade all in one game. Play with Friends & Neighbors: - Trade crops and fresh goods - Share tips with friends and help them complete trades - Compete in weekly neighborhood derby events to win rewards! Download now and build your dream farm in the most fun farming simulator! Neighbor, are you having problems? Visit https://supercell.helpshift.com/a/hay-day/?l=en or contact us in-game by going to Settings > Help and Support. Notice of Access Permission: [Optional permission] Hay Day may request permission via in-game pop ups to access your camera and send you notifications. Camera: For in-game scanning of QR codes Notifications: For sending notifications related to the game Consent is optional and you can use the app and play the game regardless of whether or not you consent. You may refuse to give consent within the game. However, certain app features may not work properly if you refuse optional access permissions. The IGRS Rating for this game is 13+. Privacy Policy: http://www.supercell.net/privacy-policy/ Terms of Service: http://www.supercell.net/terms-of-service/ Parent's Guide: http://www.supercell.net/parents/

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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 task prioritization and reminders to assist players.

Assumption to check: Players often feel overwhelmed by managing multiple tasks simultaneously.

Validate with people who use this workflow before building.

Hypothesis 2

Provide more free resources and rewards to balance gameplay.

Assumption to check: In-app purchases can feel necessary to progress quickly.

Validate with people who use this workflow before building.

Hypothesis 3

Enhance offline capabilities and ensure smoother syncing.

Assumption to check: Some users report connectivity issues affecting gameplay.

Validate with people who use this workflow before building.

Hypothesis 4

Expand customization features for personalizing farms.

Assumption to check: Limited customization options for farms.

Validate with people who use this workflow before building.

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
Zustand
Supabase
react-navigation
@react-native-async-storage/async-storage
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.