---
title: "Civil Twilight Calculator — App Overview"
url: https://marlvel.ai/intel-report/lifestyle/civil-twilight-calculator
category: Lifestyle
developer: Aviametrix, LLC
platforms: ios
rating: 5.0 (5 ratings)
pricing: paid
report_level: overview
generated: 2026-04-28
last_verified: "2026-04-28T13:32:33.310Z"
---

<!-- SECTION: Key Insight -->
> **Key Insight:** This app provides essential, offline-capable celestial timing data specifically optimized for aviation and field use.

<!-- SECTION: Quick Facts -->
| Metric | Value |
|--------|-------|
| Category | Lifestyle |
| Rating | 5.0 ★ (5) |
| Pricing | paid |
| Platforms | iOS |
| Latest Version (iOS) | 1.26 |
| Developer | Aviametrix, LLC |

<!-- SECTION: Summary -->
## What is Civil Twilight Calculator?

Civil Twilight Calculator is a utility designed to provide precise sunrise, sunset, and twilight timing calculations for aviation professionals and outdoor workers. It distinguishes itself by performing all celestial calculations locally, allowing for full functionality without an active internet connection.

<!-- SECTION: Key Features -->
## Key Features

- **Offline Celestial Calculations**: Performs all sun and twilight calculations internally without requiring a network connection.
- **Global Airport Database**: Includes built-in coordinates for 11,000 airports worldwide to quickly retrieve local sunrise and sunset times.
- **GPS-Based Tracking**: Automatically updates sun calculations and the sun dial based on current GPS location, movement, and time.
- **Address Lookup**: Utilizes internet connectivity to provide twilight times for specific global addresses and improve time zone accuracy.

<!-- SECTION: Target Audience -->
## Who is it for?

Pilots and outdoor professionals who require reliable daylight and twilight data in remote or offline environments.

<!-- SECTION: Links -->
## Links

- [App Store](https://apps.apple.com/us/app/civil-twilight-calculator/id1163850946?uo=4)
- [Full Intelligence Report](https://marlvel.ai/intel-report/lifestyle/civil-twilight-calculator)

---
*This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/intel-report/lifestyle/civil-twilight-calculator).*
*Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*