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
Umbella
**Welcome to Umbella - Your Safe Haven**
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.2
484 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.
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
Add to a Remix
Combine features and design from your favorite apps.
Kit ready. Verify your email to download it.
Generating… usually about a minute.
Make it yours Optional
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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/
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.
JavaScript is required to complete mailbox verification.
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 Umbella: map the core Lifestyle workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
Preview ready. Verify your email to reveal and copy the full prompt.
JavaScript is required to complete mailbox verification. Return to this prompt preview.
Continue in Rork >
Affiliate link: CloneChart may earn a commission at no extra cost
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
Allow users to add tags or categories to tasks for better organization.
Assumption to check: Limited customization options for tasks.
Validate with people who use this workflow before building.
Hypothesis 2
Implement reliable syncing with external calendar apps.
Assumption to check: Sync issues with calendar events.
Validate with people who use this workflow before building.
Hypothesis 3
Add customizable reminders for tasks.
Assumption to check: No reminders or notifications for tasks.
Validate with people who use this workflow before building.
Hypothesis 4
Simplify the UI for improved user experience.
Assumption to check: User interface can feel cluttered.
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 Umbella - Your Safe Haven** Umbella is more than just an app – it's your trusted companion for navigating the world as an LGBTQ+ individual. Whether you're exploring a new city, looking for supportive resources, or seeking a safe space to connect, Umbella has you covered. **KEY FEATURES** **Safe Space Discovery** • Find LGBTQ+-friendly restaurants, bars, cafes, and shops near you • View community-verified safety ratings and reviews • Get real-time updates about welcoming businesses • Discover hidden gems in your local LGBTQ+ community **Essential Resources** • Locate gender-affirming healthcare providers • Find PrEP and HIV testing centers • Access mental health and counseling services • Connect with legal support and advocacy groups • Discover community centers and support organizations **Professional Support** • Connect with LGBTQ+-affirming counselors and therapists • Access confidential, professional mental health support • Find crisis resources and emergency hotlines • Get support for coming out, transition, and identity exploration **Safety First** • Anonymous reporting system for unsafe locations • Community-driven safety alerts and updates • Privacy-focused design with local data storage • Secure, encrypted communications **Community Connection** • Share experiences and recommendations with the community • Rate and review LGBTQ+-friendly businesses • Help others discover safe and welcoming spaces • Build a stronger, more connected community **Privacy & Security** Your safety and privacy are our top priorities. Umbella stores most data locally on your device, uses end-to-end encryption for communications, and never sells your personal information. You can use the app anonymously or create an account – it's your choice. **For Everyone** Whether you're just coming out, exploring your identity, traveling, or looking for community support, Umbella is designed to help you feel safe, supported, and celebrated for who you are. **Crisis Support** If you're in crisis, Umbella provides quick access to emergency resources and crisis hotlines. Remember: you're not alone, and help is always available. Download Umbella today and join a community that celebrates diversity, promotes safety, and supports every individual's journey to authenticity. --- *Umbella is committed to creating a world where everyone can live authentically and safely. Together, we're building a more inclusive future.* EULA: https://www.umbella.club/eula.html Terms: https://www.umbella.club/terms.html Privcy: https://www.umbella.club/privacy.html
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
< Scroll to see more >
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-navigation
react-native-datepicker
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.
