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
YoHo - Group Voice Chat
We are #YoHo! Have fun with your voice.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.3
642 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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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 YoHo - Group Voice Chat: map the core Social Networking 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
We are #YoHo! Have fun with your voice. We are #YoHo! Chat with you with music. We are #YoHo! Get more laughs with a group of funny people. We are #YoHo! group voice chat app. Join a seat to chat in different rooms In YoHo, you can enjoy a fluent, high-quality voice chat, where you can speak your mind. FEATURES: #group voice chat Create a group voice chat room, invite others to join in the chat room, use text or voice to chat, enjoy the fun of a great voice chat party. #Voice chat tag You can add topic tags to your voice chat rooms. There are different chat tags for music, chatting, Karaoke, Truth or Dare games, and tons more. You can choose the chat room which you are interested in according to the topic. The tag will help you find others with the same interests more accurately so that you guys will have more topics to talk about. #Awesome virtual gifts YoHo offers lots of amazing virtual gifts and you can send cute virtual gifts whenever you want. #10 seconds to register Use a message and Facebook to sign up for a YoHo account. It is easier and saves you more time. Enjoy your voice chat experience quickly and easily. #Privacy & Respectful Community We are committed to a Safe and Family-friendly environment. · Strict Moderation: 24/7 monitoring to ensure respectful interactions. · Privacy Controls: Easily manage who can join your room or message you. · Zero Tolerance: Immediate action against any objectionable content or harassment, complying with local cultural norms.
Written user reviews are not shown here. Check current App Store reviews >
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 robust search and recommendation algorithms to suggest relevant rooms.
Assumption to check: Limited user discovery features make it hard to find new rooms.
Validate with people who use this workflow before building.
Hypothesis 2
Optimize server performance and use WebSocket for real-time communication.
Assumption to check: High latency during peak usage times.
Validate with people who use this workflow before building.
Hypothesis 3
Add more controls like muting participants and managing room settings.
Assumption to check: Limited moderation tools for room hosts.
Validate with people who use this workflow before building.
Hypothesis 4
Integrate push notifications for real-time updates about rooms and invites.
Assumption to check: No notification system for room updates or invites.
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.
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BUILD KIT DIFFICULTY
Expert
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.
