Report updated Apr 23, 2026

Overview · Full Intel report in progress

Celestial Navigation is an established navigation app that is free with in-app purchases. With a 3.7/5 rating from 42 reviews, it shows polarized user reception.

What is Celestial Navigation?

Celestial Navigation is a specialized tool for mariners that facilitates the calculation of position fixes using sextant sights and the intercept method. It provides internal ephemerides for the 58 navigational stars and offers graphical plotting of lines of position (LoPs) with fix error ellipses. The app integrates with the Sextant Frame companion app to streamline data entry and sight reduction.

Current Momentum

v1.4 · 1mo ago

Active

Last updated 36d ago. 5 versions tracked.

AI-powered deep analysis surfacing high-signal insights. Still in beta, accuracy improves daily. For informational purposes only.

Competition

Rivals identification in progress

7-Day Rank Pulse 🇺🇸

Navigation
#100
33

Rating Pulse 🇺🇸

What makes this app unique?

What Does It Look Like?

How Is The App's Momentum Right Now?

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What Are The Key Features?

Sight ReductionStandard

Calculates position fixes for the 58 navigational stars using internally computed ephemerides.

Graphical LoP PlottingStandard

Visualizes lines of position relative to an assumed position, including a calculated fix error ellipse.

Realtime Horizon ProjectionStandard

Provides a panoramic view for star identification, sight preparation, and true bearing calculations.

Companion IntegrationStandard

Supports direct import of sight data captured via the Sextant Frame camera-based app.

How much does it cost?

Freemium

Who Built It?

Dr. Harald Merkel

(426)

Equipping mariners and musicians with high-precision, offline-capable utility tools for navigation and instrument tuning.

Portfolio

3

Apps

Free 2
Music50%
Navigation50%

Who is Dr. Harald Merkel?

Dr. Harald Merkel maintains a distinct position by developing high-precision utilities for technical niches like celestial navigation and chromatic tuning. The portfolio's primary advantage is its focus on functional depth—such as internal ephemerides and visual pitch traces—over the polished, registration-heavy interfaces of mainstream competitors. This 'utility-first' approach caters to professional users who require reliable, offline-capable tools for specialized environments.

Who is Dr. Harald Merkel for?

  • Professional mariners
  • Yacht operators
  • Musicians seeking high-precision
  • Data-driven tools that function without internet connectivity
Steady

Portfolio momentum

Maintains a steady development cycle with 2 updates across the portfolio in the last 6 months, ensuring core navigation and tuning utilities remain functional.

Last release · 21d agoActive apps · 2

Analysis in progress, available soon

What do users think recently?

Analysis in progress, available soon

Analysis in progress, available soon

What is the competitive landscape for Celestial Navigation?

How's The Navigation Market?

How does it evolve in the Navigation market?

ChartRankChange
Paid#10039

Strategic analysis coming soon

SWOT, key takeaways & outlook

The outtake for Celestial Navigation

Key Takeaways

This is a technical navigation utility that offers advanced celestial calculation tools, with extended celestial body support locked behind a premium subscription.

Where Is It Heading?

Trend analysis

Available very soon

Disclosure

Independent intel to help builders create better apps.

AI-powered analysis with editorial review, built from publicly available sources. See methodology.

Marlvel.ai is not affiliated with, endorsed by, or sponsored by Celestial Navigation, its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

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Cite this report

Marlvel.ai. “Celestial Navigation Intelligence Report.” Updated Apr 23, 2026. https://marlvel.ai/intel-report/navigation/de-merkel-celestial-navigation

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