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
Unbordered Foreign Friend Chat
Meet foreign people, find language exchange partners, or just browse the public timeline to see what's happening around the world
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
8,609 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 included17 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 Unbordered Foreign Friend 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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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
Expand language filters and options to include more dialects.
Assumption to check: Limited language options for connecting users
Validate with people who use this workflow before building.
Hypothesis 2
Implement more granular privacy controls for users.
Assumption to check: Lack of advanced privacy settings
Validate with people who use this workflow before building.
Hypothesis 3
Enhance friend-finding algorithms for better matching.
Assumption to check: User discovery can be limited
Validate with people who use this workflow before building.
Hypothesis 4
Improve push notification reliability and user control over alerts.
Assumption to check: Inconsistent notification delivery
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
Meet foreign people, find language exchange partners, or just browse the public timeline to see what's happening around the world. It's great to use as a language exchange app or just to meet international friends. Instant translations Translate any text, post, or profile with the push of a button. Communicate with anyone and don't worry about the language barrier! Audio Messaging Send and receive audio messages. Practice your pronunciation and listen to native speakers! Share Your Thoughts The public blog is a great place to share your thoughts with the world. Say hello and connect with everyone! Public Chat Rooms Meet people from around the world in one place. Enjoy the global cultural exchange! Search Find international friends from many places. Night Mode (Optional) Save your eyes from looking at a bright screen at night. Your eyes will thank you! This also saves battery life. If you’re a travel planner or like to use travel apps, this app may also be useful for you. You can ask questions to native speakers and get travel tips from people who live in the country you want to visit. Unbordered is more than just a language exchange chat to communicate with foreigners, it's also one of the few totally free foreign chat apps with no subscription needed and no limit on how many messages you can send or receive. It is one of the best social app types available. It can be difficult to make international friends if you live in place where it's hard to meet foreign people. For example, If you wanted to meet Japanese or Korean friends, yet live in place where you can't find anyone from there, it can be a problem. Unbordered makes it easy to meet foreign friends or language partners from many countries. Want to travel to the UK? Practice with a native English speaker! Interested in going to Spain? Language exchange in Spanish with a native speaker from Barcelona! Learning Thai? Find a language partner from Thailand! Going on a trip to Milan? Learn Italian by talking to real Italian speakers and make foreign friends while you’re at it. If you're looking to find a language partner or to just make foreign friends, download Unbordered today and begin your international adventure! Terms of Use & Privacy Policy https://www.unbordered.net/terms-of-use
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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
Supabase
Zustand
react-native-reanimated
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.
