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.
With Fog of World, you relive those destinations and the path that lead you there
$30.00 · 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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Generating… usually about a minute.
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 Fog of World: 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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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: High price point for users to access full features
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited social features for sharing experiences
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: No offline functionality
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
With Fog of World, you relive those destinations and the path that lead you there. Map it; draw each stride out for you to see. Look at the work of art you’ve created - just by traveling. By knowing you cannot be contained. Join Us. Embrace a unique way of experiencing your adventures! Explore, visit and memorize your travels on the world map. Unfog the world and make your life more brilliant today! ● VISUALIZE & MEMORIZE EVERYWHERE YOU’VE BEEN Fog of World is a real-life, travel and exploring game where you need to remove the fog on the map by exploring the world. It's a fantastic way to visualize everywhere you have been in your entire life or to discover places around you! ● EXQUISITE MAPPING Beautiful world maps are available at a glance. Explore the places near your location, find the spot to go and hit record. Your trip is then recorded, mapped and kept on your cloud storage forever. Start the travel explore the game, while memorizing the places you visit in a neat way. Grow your level and increase your visit percentages for every continent. Have fun exploring the world! ● CRITICALLY ACCLAIMED • Featured by Apple as App of the Day in 137 countries • This Fog of World App Might Be the Funniest App I’ve Seen in a Long Time - GIZMODO • We don't remember the last time we've run into an app that is as interesting as Fog of World - Business Insider • Fog of World turns moving through your city and your world into a game of exploration - AppStorm • Original worldwide location tracking game that will make you want to explore every street in your city and far wider - LITTLE APP REVIEW • Fog of World uses the fog of war from video games to gamify traveling - The Awesomer • Was holding the 1st position for top stories on Hacker News! ● FEATURES • Records your tracks and maps travel (even when the app running in the background). • Shows everywhere you have been on the map at the same time with its advanced trip and travel mapping. • Analyses your statistics around the world, around every continent, and around every country and territory. • Lots of badges to motivate you to explore more around the world. • Support for multiple databases and securing data with snapshots for various tracking purposes. • Support for Importing tracks through GPX or KML files. • Support for syncing your data with iCloud, Dropbox and OneDrive. • Super high-accuracy offline reverse geocoding database that provides the most accurate statistics. • Support for Siri shortcuts and personalized Siri phrases. ● PRIVACY POLICY In short, we do not collect any of your exploration data. Your data will be uploaded when you sync them with your cloud storages, but only you have access to them. We don't. ● Why Fog of World? • Fog of World is the first app that brings the fog of war idea into the real world map back in 2012 and provides free updates since then. • Fog of World remains the best app to render the fog overlay and is the only app that shows you high-resolution tracks. Don't believe it? Download the copycat apps and compare the results with Fog of World screenshots. • There is no user account of Fog of World. All of your data are saved in your device. You have 100% privacy. • The database is designed to use as little storage as possible while providing high performance. • Fog of World is the only app that truly works around the world since China uses the GCJ-02 coordinate system due to political reasons. Other copycats either work correctly in China or the rest of the world, but not both. Map your trips, memorize and start your world adventure with Fog of World. It’s like having world atlas and yourself to explore and conquer it. Download the ultimate explore game and places I've been travel tracker now! Like us on Facebook: https://www.facebook.com/OllixIO/ Follow us on Twitter: https://twitter.com/OllixIO Note: Continued use of GPS running in the background can dramatically decrease battery life.
Written user reviews are not shown here. Check current App Store reviews >
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.