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
Tripcast
* Featured as “New and Noteworthy” by Apple *
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.8
6,784 ratings · Top 5%
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 Tripcast: map the core Travel 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 a more intuitive trip overview dashboard.
Assumption to check: Users often find it hard to manage multiple trips at once.
Validate with people who use this workflow before building.
Hypothesis 2
Enhance in-app messaging with notifications and better UI.
Assumption to check: Limited in-app messaging features can hinder communication.
Validate with people who use this workflow before building.
Hypothesis 3
Streamline the trip sharing process with simpler options.
Assumption to check: Trip sharing can sometimes be cumbersome.
Validate with people who use this workflow before building.
Hypothesis 4
Allow for drag-and-drop reordering of itinerary items.
Assumption to check: Users report issues with trip item organization.
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
* Featured as “New and Noteworthy” by Apple * Tripcast lets you share your travel photos with the people who want to see everything, not just the highlights. Start a trip, invite your friends and family to the album, and give them live photo updates from the road! The best way to share your trip: • Make updates instantly: Update your family and friends in real time • Stay in touch: Ask questions, leave comments, and like posts Build an album with everybody: • Vacationers assemble!: Collect everyone's trip photos in one place • Easy backup: Download them all when you get home Map it out: • Effortless tagging: Photos are automatically added to the trip map • Browse by location: View photos by where they happened, not when Everyone is using Tripcast to share their travels: • Keep it private: Share only with the people who care the most, away from social media • Apps for everyone: Access Tripcast through gorgeous apps for iPhone and the web • Bring everyone along: Notifications keep friends and family updated whenever there's activity How it works: 1. Create: Make an album for your trip 2. Invite: Pick friends and family to follow along 3. Update: Post photos and videos as you travel Built by the team that created Cluster, featured as a Best New App in the App Store! Tripcast Club is a monthly or annual subscription to give admins more control over their groups. Check it out by visiting the Settings → Subscription Settings section of the app. By purchasing a subscription you agree to Tripcast's Terms of Use: https://tripcast.co/terms/ and Privacy Policy: https://tripcast.co/privacy/
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.
SUGGESTED BUILD STACK
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Axios
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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.
