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
Headbands: Charades Party Game
Headbands is the charades party game that turns any get-together into a comedy show
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.6
37,665 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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Combine features and design from your favorite apps.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included18 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 Headbands: Charades Party Game: 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
Add a feature for users to create and share custom categories.
Assumption to check: Limited categories can make gameplay repetitive.
Validate with people who use this workflow before building.
Hypothesis 2
Improve ad placement and offer a premium ad-free version.
Assumption to check: Ads can interrupt the gameplay experience.
Validate with people who use this workflow before building.
Hypothesis 3
Implement friend invites and leaderboards.
Assumption to check: Lack of social features like friends list.
Validate with people who use this workflow before building.
Hypothesis 4
Allow game play without internet connection, syncing scores later.
Assumption to check: No offline mode available.
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
Headbands is the charades party game that turns any get-together into a comedy show. Hold the phone to your forehead and guess the word. A TOP 20 WORD & CARD GAME in the USA, Canada, UK, Australia, and many more countries, loved by players with 4.6 stars from 56,000+ ratings. Thank you! HOW TO PLAY Hold the phone to your forehead. Everyone else sees the word, but you don't. They act it out, describe it, sing it, or dance it while you guess. Got it? Tilt your head down for a new word. Stuck? Tilt up to pass. Racing the clock too stressful? Turn the timer off and play at your own pace. MORE THAN GUESSING Pick your challenge type: acting, dancing, singing, sketching, describing, and more. Every round is different: charades, drawing games, and karaoke chaos in one app. FEATURES • Game Center achievements & leaderboards: compete with friends and the world • Create your own decks, or let AI build a custom deck for you in seconds • Play with 2 players or a party of 100+ • Play remotely over FaceTime • Record your gameplay and share the funniest moments • Timer on or off – you decide • Sounds & haptic feedback (vibration) • New and updated decks added regularly 95+ DECKS, 50,000+ WORDS The English edition alone offers 95+ decks with thousands of words and phrases. Headbands is fully localized into 8 languages (English, Spanish, French, German, Italian, Polish, Czech, Slovak) with over 50,000 words in total, each language with its own culturally adapted decks. Popular decks include: • Act It Out • Animals • Movie Characters • Songs from the 60s to the 00s • And lots more! Some decks are free; additional decks are available via in-app purchase. PERFECT FOR EVERY OCCASION Family game night, birthday parties, road trips, sleepovers, holidays, team-building icebreakers, or a spontaneous round over FaceTime. No board, no cards to lose, no setup: one phone (or a video call) is all you need. If you're looking for the best charades app, a heads-up style guessing game, or a party game for friends and family, near or far, download Headbands today and start guessing! Privacy policy: http://headbands.app/privacyPolicy.html Terms of use: http://headbands.app/termsOfUse.html
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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
React Navigation
Firebase
AdMob
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.
