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.
Join 23M+ travelers using Polarsteps as their all-in-one travel app
Free · In-app purchases
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.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
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.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for Polarsteps: 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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Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Join 23M+ travelers using Polarsteps as their all-in-one travel app. Build unique itineraries with the travel planner, let the travel tracker record your route, share the journey with friends and family, and turn it into a photo book to relive later. Whether it's a six-month trip or a weekend canoeing close to home, Polarsteps is here to capture and share your journey as it unfolds. Awards ■ Top 26 Apps — Apple App Store (2026) ■ Top 3 Travel Apps — Apple App Store (2026) ■ App of the Day — Apple App Store (2025) PLAN ■ AI itinerary planner: Create a personalized adventure based on past trips or current goals. ■ Destination snapshots: Get a quick overview of each place, why it fits your travel style, and which friends have already been there. ■ Trip details: Add notes, accommodation details, and must-see spots and activities. ■ Transport planner: Choose how you'll get from A to B for every leg of the trip. ■ Inspiration: Follow other explorers, see where they went, and get ideas for your own trips. TRACK ■ Automatic route tracking: Accurately track the route you took on a beautiful digital world map. ■ Travel Buddies: Invite friends to track trips together. ■ Capture the adventure: Add photos, videos, and stories to each step to bring your journey to life. ■ Travel stats: See how much of the world you’ve traveled, with your total of countries visited, distances covered, and more. ■ Top spots: Add your favorite places and activities so they’re part of your story. ■ Transport mode: Select how you got from place to place, whether by plane, train, or even tuk tuk. SHARE ■ Trip updates: Share your journey so friends and family can follow along from anywhere, seeing where you are and what you’ve been up to. ■ Traveler tips: Leave suggestions for other travelers on what to see and do. ■ Privacy controls: Decide who sees your adventures: everyone, followers only, or you only. RELIVE ■ Digital memories: Scroll through the places, photos, stories, and stats you’ve captured across all your trips. ■ Trip Reels: With the press of a button, transform your trip into a memorable video (also perfect to share on socials). ■ Travel Books: Turn your trip into a beautifully printed Travel Book that showcases your route and memories. WHAT OUR USERS SAY: “Love this app! It tracks me on my vacation and provides real-time notifications to friends and family of my trip. At the end, I ordered a Travel Book of my photos which is very high quality.” “The Polarsteps app is great. I am totally addicted. It is so nice to keep up with all your travels. And friends and family can follow you wherever you go. The Travel Book, which you can order afterwards, is of very good quality.” “I’ve been using this app for years now. It’s always been good and it keeps getting better.” WHAT THE PRESS ARE SAYING ABOUT POLARSTEPS “The Polarsteps app replaces your travel journal, making it easier and more beautiful.” - National Geographic “Polarsteps helps you track and share your journeys in an easy and visually appealing way” - The Next Web “Polarsteps’ resulting travel log is impressive, and is the source of a severe case of itchy feet in your correspondent.” - TechCrunch
Written user reviews are not shown here. Check current App Store reviews >
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
Assumption to check: Limited offline functionality for users during travel
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Difficulty in finding specific past trips
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Social sharing features are limited
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Lack of customization options for trips
Validate with people who use this workflow before building.
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.