App Overview

SkyLogger icon

SkyLogger

Hartwig Wiesmann · Navigation

SkyLogger is a program for obtaining and storing flight data

$5.99 · In-app purchases

PRICE
$5.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
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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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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.

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.

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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> SELECT BUILD PLATFORM:

Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

// RORK SYSTEM PROMPT
Rork plan preview for SkyLogger: map the core Navigation 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 downloadable offline maps.

Assumption to check: Limited offline capabilities for navigation

Validate with people who use this workflow before building.

Hypothesis 2

Simplify the logging process with guided steps.

Assumption to check: Complex user interface for flight logging

Validate with people who use this workflow before building.

Hypothesis 3

Integrate voice-guided navigation for hands-free use.

Assumption to check: Lack of voice navigation features

Validate with people who use this workflow before building.

Hypothesis 4

Allow sharing routes with popular mapping apps.

Assumption to check: No integration with other navigation apps

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

SkyLogger is a program for obtaining and storing flight data. The program is especially adapted for the usage by glider, hangglider and paraglider pilots. 
SkyLogger obtains the geodetic positions of the pilot during the flight and stores the data. Furthermore, the pilot is able to see during the flight the elapsed time, the distance to the take-off as well as the current ground speed and climb rate. A compass rose is indicating the current flight direction.
 For competitions the pilot's and the aircraft's name, the aircraft's ID and the to be flown route can be entered.
 During the flight the direction and distance to the next waypoint are shown on the display. After finishing the flight the stored geodetic data together with the data for the competition can be converted into the common IGC file format. Additionally, also other popular formats like GPX and KML are supported. The created files are stored on the iPhone or can be sent to servers or other computers. SkyLogger supports besides others the following features: - control by Apple Watch; - main data visualization on Apple Watch; - cockpit / instrument view; - 2D & 3D flight data visualization; - downloadable map data; - large and individually adaptable instruments on a moving map allow best viewing comfort; - north or in flight direction orientation of moving map; - live tracking support for Leonardo or Vgps servers - visualization of previously flown flights as track traces on moving map; - visualization of airspaces with user defined colors; - instrument showing the distance and direction to the closest airspace; - 3 axis acceleration measurements; - tracked flights are stored in highly efficient internal database; - default flight parameters can be stored and retrieved to make flight information entering for competitions easier; - SkyLoggerXXL supports common file formats like IGC, CSV, GPX and KML; - IGC files created by SkyLoggerXXL are OLC conform and can directly be sent to Leonardo, XCCup, XContest and XC globe based OLC servers; - calculation of XC points for FAI triangle, triangle and free distance over 5 points; - XC analysis (determination of FAI triangle areas); - printing of flightbooks, flight information and statistics - all diagrams, maps or charts can either be e-mailed or copied for incorporation into other apps; - integration of SkyView database for exchanging waypoints; - support of FlyNet accessories; - support of SensBox; - weather data history of selected weather stations for the last 48 hours; - online wind speed and direction visualization on maps for selected weather stations; - visualization of hotspots; - visualization of regions with thermals; - visualization of climb rate traces; - and much much more! Warning: Continued use of GPS running in the background can dramatically decrease battery life.

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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
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BUILD KIT DIFFICULTY
Advanced

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.