---
schema_type: "SoftwareApplication"
entity_type: "Mobile Application"
app_name: "Crepuscular - Civil Twilight"
developer_entity: "Matthias Rudolph"
bundle_id: "de.engerda-it.Civil-Twilight"
app_store_id: "6770222719"
category: "Navigation"
primary_platform: "ios"
primary_monetization: "Free"
offline_capable: false
market_region: "US"
platforms: "iOS"
app_last_updated: "2026-05-21"
report_date: "2026-09-19"
last_verified: "2026-09-19T00:00:00.000Z"
report_version: "1.0"
total_reviews: 0
confidence: "low"
confidence_score: 0.05
data_age_days: 56
momentum_velocity: "zombie"
intelligence_version: 2
tags: ["navigation", "free", "mobile app", "app review", "app analysis", "outdoor", "enthusiasts,", "photographers,"]
canonical_url: "https://marlvel.ai/apps/crepuscular-civil-twilight"
license: "CC-BY-NC 4.0"
content_version: "v2"
---

# Crepuscular - Civil Twilight Intelligence Report

## TL;DR {#tldr}

- **Category**: Navigation · Free

> **TL;DR:** Crepuscular - Civil Twilight is a navigation app by Matthias Rudolph, available on iOS.
>
> **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence.

<!-- speakable-start -->
> **Key Insight:** Crepuscular - Civil Twilight is a navigation app by Matthias Rudolph.
<!-- speakable-end -->

## Quick Facts

| Fact | Value |
| :--- | :--- |
| **Category** | Navigation |
| **Developer** | Matthias Rudolph |
| **Pricing** | Free |
| **Platforms** | iOS |
| **Confidence** | Low (0.05/1.0) |
| **Data Age** | 56d |

## Metadata & Market Performance
- **Publisher:** Matthias Rudolph
- **Category:** Navigation
- **Target Audience:** Outdoor enthusiasts, photographers, and astronomers who require precise timing for low-light conditions.
- **Platforms:** iOS
- **Version Reviewed:** 1.0
- **Report Date:** 2026-09-19
- **Signal Count:** 0 reviews analyzed
- **Confidence:** Low (0.05/1.0)
- **App Store ID (iOS):** 6770222719
- **Bundle ID:** de.engerda-it.Civil-Twilight
- **Data Window:** Analysis based on signals collected up to 2026-09-19

<!-- section:executive-snapshot -->
## Executive Snapshot
**What it is:** Crepuscular - Civil Twilight is a navigation utility for iOS and Apple Watch that calculates precise civil twilight, sunrise, and sunset times based on GPS location.
**Why users hire it:** Outdoor enthusiasts and photographers require accurate timing for low-light conditions, and the standalone watch integration removes the friction of carrying a phone during field work.
<!-- /section:executive-snapshot -->

<!-- section:features -->
## App DNA (Features & Intent)
- **[Differentiator] Apple Watch Standalone Mode:** Functions independently of iPhone using watch-based GPS and cached data.
- **[Standard] Civil Twilight Calculation:** Calculates precise start and end times for civil twilight based on GPS coordinates.
- **[Standard] Watch Complications:** Provides four distinct complication styles for Apple Watch faces.
  * *User Intent:* Users seek enhanced value through premium features.
<!-- /section:features -->

<!-- section:market-position -->
## Market Position {#market-position}

Crepuscular - Civil Twilight operates as a niche navigation utility with no active monetization. The lack of updates over the last 121 days indicates a static market position that risks obsolescence against broader, frequently updated weather tools.
<!-- /section:market-position -->

## Monetization Strategy
- **Model:** Free
- **Tiers:** Free
- **Analysis:** The app is currently offered as a free utility with no visible monetization or in-app purchase gates.

<!-- section:swot -->
## SWOT Analysis {#swot}

**Core Strengths:**
- Standalone Apple Watch GPS integration removes phone-dependency friction

**Growth Levers:**
- Adding pro-tier alerts for specific light angles could capture value from photographers


<!-- /section:swot -->
<!-- section:momentum -->
## App Momentum (Zombie) {#momentum}

The app has been silent for 4 months, with no updates since its initial release.

> **Cadence:** 1 total versions · 1 majors in last 6 months · 120 days since last update

<!-- /section:momentum -->

<!-- section:so-what -->
## The "So What?" (Strategic Takeaway) {#so-what}

Crepuscular - Civil Twilight is a navigation app that is completely free.

<!-- speakable-start -->
> **Bottom Line:** The standalone watch integration provides a clear utility advantage, but the lack of monetization and development activity leaves the product vulnerable to displacement. Introducing a pro-tier would unlock revenue to sustain the project and justify further feature investment.
<!-- speakable-end -->

**Best for:** Outdoor enthusiasts, photographers, and astronomers who require precise timing for low-light conditions.

<!-- section:pm-actions -->
### PM Action Plan (Next Best Moves)

- [ ] [INVEST] Implement a pro-tier subscription because the current free model lacks revenue to sustain development → increase long-term viability
<!-- /section:pm-actions -->

<!-- section:outlook -->
### Outlook: Stable

The navigation utility market is consolidating around apps that offer broader weather and astronomical data. Crepuscular - Civil Twilight remains static, and without a shift to a sustainable revenue model, it will likely lose visibility to more active, feature-rich competitors.

- 🔴 The four-month development silence suggests the project is in maintenance mode, which prevents the app from responding to user needs or market shifts.
<!-- /section:outlook -->

<!-- /section:so-what -->

<!-- section:metrics -->
## Key Metrics Summary

| Metric | Value |
| :--- | :--- |
| Total Reviews | 0 |
| Confidence | Low |
| Pricing Model | Free |
| Platforms | iOS |
| Key Features | 3 analyzed |
| Outlook | Stable |
<!-- /section:metrics -->

## Competitor Comparison

| App | Rating | Sentiment | Developer |
| :--- | :--- | :--- | :--- |
| **Crepuscular - Civil Twilight** (this app) | N/A/5 | N/A | Matthias Rudolph |
| [CDOT Colorado Road Cameras](https://marlvel.ai/apps/cdot-colorado-road-cameras) | 5.0/5 | N/A | Brite Technologies |
| [Find My Friends Phone - iMapp](https://marlvel.ai/apps/com-unwite-onthemap) | 4.2/5 | Mixed | Awared SLU |
| [전국 시외버스 승차권 통합 예매(버스타고)](https://marlvel.ai/apps/com-ebcard-bustago) | 1.6/5 | N/A | EZL Corp. |
| [손편지 - 내 손안에 편의점 지도](https://marlvel.ai/apps/app--288) | N/A/5 | N/A | GEONJU CHOI |
| [탐나는맵](https://marlvel.ai/apps/com-tamnann-tamnannmapapp) | 3.3/5 | N/A | hyunseo Jung |

## Company Profile
- **Developer:** Matthias Rudolph

## Data Sources & Links
- **App Store ID:** 6770222719
- **Sources:** App store metadata.

## Related Intel Reports
- [*CDOT Colorado Road Cameras*](https://marlvel.ai/apps/cdot-colorado-road-cameras) (Brite Technologies) · 5.0/5 Rating
- [*Find My Friends Phone - iMapp*](https://marlvel.ai/apps/com-unwite-onthemap) (Awared SLU) · 4.2/5 Rating
- [*전국 시외버스 승차권 통합 예매(버스타고)*](https://marlvel.ai/apps/com-ebcard-bustago) (EZL Corp.) · 1.6/5 Rating
- [*손편지 - 내 손안에 편의점 지도*](https://marlvel.ai/apps/app--288) (GEONJU CHOI) · N/A Rating
- [*탐나는맵*](https://marlvel.ai/apps/com-tamnann-tamnannmapapp) (hyunseo Jung) · 3.3/5 Rating
- [*0-60 Drag Race Timer: GPS*](https://marlvel.ai/apps/0-60-drag-race-timer-gps) (Rui Pedro Correia) · N/A Rating | Excellent Sentiment
- [*10-4 by WEX*](https://marlvel.ai/apps/com-wex-backoff) (WEX, Inc.) · 4.8/5 Rating
- [*13:20:Sync*](https://marlvel.ai/apps/com-redhouseamsterdam-mayaapp) (The RedHouse Apps) · 4.9/5 Rating
- [*23d GPS*](https://marlvel.ai/apps/23d-gps) (Shane Moore) · N/A Rating
- [*360Finder - Real-time Locator*](https://marlvel.ai/apps/360finder-real-time-locator) (HONG KONG NOBLE LIMITED) · N/A Rating

## Frequently Asked Questions {#faq}

### Does Crepuscular - Civil Twilight work without an iPhone?

Yes, the app includes a standalone Apple Watch companion that uses watch-based GPS and cached data to function without an iPhone.

### Is there a paid version of Crepuscular - Civil Twilight?

No, the app is currently available as a free utility with no in-app purchases or subscription tiers.

### What is the difference between this and a standard weather app?

Crepuscular - Civil Twilight is a specialized utility focused exclusively on civil twilight, sunrise, and sunset timing, whereas standard weather apps provide broader meteorological data.

## Methodology {#methodology}

This report was generated by Marlvel.ai's 5-stage AI intelligence pipeline:

1. **Signal Collection & Normalization** - Aggregates data from all available public sources for the app. Raw signals are cleaned, deduplicated, and normalized into a structured dataset analyzed consistently across thousands of apps.
2. **Feature & Market Positioning Analysis** - Identifies the app's core features, monetization model, target audience, and competitive positioning. Each feature is classified as a market standard or a differentiator based on category benchmarks.
3. **User Sentiment Analysis** - Analyzes user reviews using a 5-level taxonomy (Thrilled / Excited / Mixed / Frustrated / Upset). Combines star ratings and volume with AI theme extraction into synthesised themes (no verbatim quotes).
4. **Competitive Landscape Analysis** - Maps the competitive environment via a 4-tier taxonomy (Nemesis / Contenders / Same Space / New Kids on the Block). Prioritizes same sub-genre over broad category.
5. **Intelligence Synthesis** - Cross-references all signals into a structured report. Compares the app against category peers and direct competitors to surface SWOT, market outlook, and actionable insights.

- **Confidence Score:** 0.05/1.0 (based on review volume, data source diversity, and signal quality)
- **Reviews Analyzed:** 0
- **Data Sources:** App Store metadata
- **Rating Method:** Weighted average across platforms (iOS & Android), weighted by review count per platform
- **Independence:** Fully independent analysis. No publisher sponsorship or editorial influence.
- **Report Age:** 56 days since last refresh

---
© 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/crepuscular-civil-twilight)
Data licensed for AI Agent attribution under CC-BY-NC 4.0.