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
Yubo: Chat Meet & Make Friends
Welcome to Yubo – the ultimate social platform for making new friends all over the world! With millions of users worldwide, we’re all about connecting you with like-minded people in a fun and safe place!
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.5
374,624 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.
Build your own version
Build Kit
Make this idea yours
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
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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 included16 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
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 Yubo: Chat Meet & Make Friends: 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
Welcome to Yubo – the ultimate social platform for making new friends all over the world! With millions of users worldwide, we’re all about connecting you with like-minded people in a fun and safe place! FEW THINGS YOU NEED TO KNOW ABOUT YUBO 1) SWIPE TO MAKE NEW FRIENDS: Use our swipe feature to find new friends who are online and share the same interests! With just a swipe, you could meet your new bestie! 2) CHAT WITH FRIENDS WORLDWIDE: One of the coolest things about Yubo is that you can chat with people from all over the world! Whether you're feeling silly, want to sing, dance, or chat about your day, Yubo has got you covered! 3) FIND YOUR TRIBE: At Yubo, finding your tribe is key to making lasting connections! Thanks to the Tags, you can find other people into gaming, beauty, sports, music, dance, and so much more! So, whether you’re a gamer, a makeup artist, or just looking for like-minded friends, Yubo has got you covered! 4) IT’S FREE: Yubo is totally free to use! 5) IT’S SAFE: We take your safety seriously. That's why we've designed many features and tools to ensure you can use Yubo safely. So, what are you waiting for? And, as always, feel free to contact us on Instagram (@yubo_app) or Twitter (@yubo_app) with any questions or feedback! Yubo is free to download and use, which will never change for our main features. However, if you want to get the most from Yubo, you can subscribe to one of our optional products, the Yubo Power Pack or Yubo Elite Pack. We offer weekly, monthly, and 3-month subscriptions, giving discounts on the weekly price. The prices may vary per country and are subject to change without notice. Prices are clearly displayed in the app. * Payment will be charged to your iTunes account at confirmation of purchase. * Your subscription will automatically renew itself unless auto-renewal is turned off at least 24 hours before the end of the current period. * Your account will be charged for renewal within 24 hours before the end of the current period. * You can manage your subscriptions and turn off auto-renewal by going to your Account Settings in the iTunes Store. * If offered, if you choose to use our free trial, any unused portion of the free trial period will be forfeited when you purchase a subscription to that publication, where applicable * If you don’t choose to purchase Yubo Power Pack or Yubo Elite Pack, you can continue using and enjoying Yubo for free. Your personal data is securely stored on Yubo - be sure to read our privacy policy and terms and conditions: https://yubo.live/legal/privacy https://yubo.live/legal/terms
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 strong privacy controls and transparent data policies.
Assumption to check: Privacy concerns regarding user data sharing
Validate with people who use this workflow before building.
Hypothesis 2
Improve friend discovery algorithms and add more filters.
Assumption to check: Difficulty in finding relevant friends or groups
Validate with people who use this workflow before building.
Hypothesis 3
Enhance content moderation features and reporting mechanisms.
Assumption to check: High levels of spam or inappropriate content
Validate with people who use this workflow before building.
Hypothesis 4
Introduce gamification elements and interactive features.
Assumption to check: Limited engagement features compared to competitors
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
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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.
