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
Yaahlan
Welcome to Yaahlan!
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 3.4
110 ratings · Below Average
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 included18 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 Yaahlan: 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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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 advanced filtering options and personalized recommendations.
Assumption to check: Limited features for event discovery and filtering
Validate with people who use this workflow before building.
Hypothesis 2
Introduce messaging and commenting features to enhance interactions.
Assumption to check: User engagement drops due to lack of social interaction features
Validate with people who use this workflow before building.
Hypothesis 3
Ensure a responsive design that maintains consistency across different screen sizes.
Assumption to check: Inconsistent user interface and experience across devices
Validate with people who use this workflow before building.
Hypothesis 4
Add subscription tiers with exclusive features and content.
Assumption to check: Poor user retention due to lack of monetization options
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
Welcome to Yaahlan! Yaahlan is an exclusive social and entertainment hub designed specifically for Arabic users, featuring real-time voice chat, a variety of popular games, and continuous online gatherings. Here, you can freely converse and enjoy fun times with your friends. Whether you're looking to pass the time or have fun, Yaahlan has everything you need! Yaahlan offers a selection of the most popular games for you and your friends, including Ludo, Carrom, Snakes and Ladders, Quiz, and more—all free to play. Plus, you can engage in voice chats with friends while you play. Amazing Features [VOICE CHAT ROOM] Join a group chat room and chat with friends anytime, anywhere. Create your own chat rooms and invite friends to share enjoyable moments together. Experience real-time voice chat with fascinating gifts. [VARIOUS FUN GAMES] Discover an expansive selection of games including Ludo, Carrom, Snakes and Ladders, Quiz, Domino, Eightball, Chess, and more—all available for you to play for free with friends. Easily find fellow gamers to join as partners or challenge in competition. Enjoy gaming within a chat room environment, enhancing your fun and interactive experience. [STUNNING GIFTS EFFECTS] Explore a variety of unique and extraordinary gifts, exclusively curated to let you showcase your personality and show support to your friends. Experience cool entrance effects that ensure all eyes are on you, making you feel like a true rock star. [FUNNY ACTIVITIES] Join us for a variety of activities held weekly and during festivals. With Yaahlan, there's always something interesting to discover and endless opportunities for happiness. Experience the thrill of Yaahlan! Engage in voice chats online, enjoy free real-time discussions, and join group chat rooms. Dive into exciting PK challenges, send cool gifts, and explore amusing games. Start your unique and delightful journey with us. Join Yaahlan now! Stay updated and connected! Follow us on social media: Facebook: https://www.facebook.com/profile.php?id=61568419767074 Instagram: https://www.instagram.com/yaahlan_official X: https://x.com/YaahlanOfficial TikTok: https://www.tiktok.com/@yaahlan_official Youtube: https://www.youtube.com/@YaahlanOfficial/shorts Email: [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.
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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.
