---
title: "Charalampos Baltzakis — Publisher Overview"
type: publisher
publisher: "Charalampos Baltzakis"
publisher_slug: "charalampos-baltzakis"
canonical_url: "https://marlvel.ai/publishers/charalampos-baltzakis"
last_updated: 2026-05-07T23:26:47.614Z
source: Marlvel.ai
license: CC-BY-NC-4.0
citation: "Marlvel.ai — Charalampos Baltzakis Publisher Overview"
---
# Charalampos Baltzakis — Publisher Overview

> Providing pilots with high-precision flight instrumentation using standard mobile device sensors. Enables secondary navigation and attitude monitoring for light aircraft.

- **Publisher:** Charalampos Baltzakis
- **Website:** [https://a-efis.com](https://a-efis.com)
- **Overview generated:** 2026-05-07
- **License:** CC-BY-NC 4.0

## Executive summary

The publisher operates as a specialized developer of aviation-grade flight instrumentation, leveraging internal device sensors to provide a cost-effective alternative to dedicated hardware. By utilizing stochastic models and digital filtering, they have established a niche in the general aviation and ultralight market, specifically targeting users who require secondary or backup flight data. Their strategic focus remains on technical accuracy and sensor integration rather than broad consumer appeal, positioning them as a utility-first developer in the aviation software space.

## Publisher DNA

- **Primary focus:** Aviation navigation and flight instrumentation tools
- **Scale:** indie
- **Target audience:** Pilots of ultralight, LSA, and general aviation aircraft requiring auxiliary flight data.

## Portfolio momentum

- **Velocity:** maintenance
- **Active apps:** 0
- **Abandoned apps:** 0

The publisher has released no new updates in the last 6 months, indicating a maintenance-focused development cycle.

## Aggregated portfolio metrics

- **Total reviews (all apps):** 21
- **Weighted rating:** 4.71 / 5
- **Apps in portfolio:** 2

## Category breakdown

| Category | Apps | Share |
| :--- | :--- | :--- |
| Navigation | 2 | 100% |

## Top apps

- **A-EFIS Black and White** — Primary freemium navigation tool with 18 reviews.
- **A-EFIS Pro** — Paid professional-tier flight instrumentation app.

## Signature patterns

- Specialization in GPS-based flight data and artificial horizon (AHRS) instrumentation
- Utilization of internal device sensors for flight attitude estimation
- Integration with flight simulation software like X-Plane
- Clear segmentation between freemium and paid professional product tiers

## Bottom line

This publisher maintains a highly specialized, utility-driven portfolio that serves a specific aviation niche. Their focus on sensor-based accuracy provides a clear value proposition for light aircraft pilots seeking secondary instrumentation.

---
© 2026 Marlvel.ai | [Publisher apps index](https://marlvel.ai/api/llm/publishers/charalampos-baltzakis) | [Methodology](https://marlvel.ai/api/llm/methodology)
Data licensed under CC-BY-NC 4.0.

---
© 2026 Marlvel.ai | [Full publisher profile](https://marlvel.ai/publishers/charalampos-baltzakis) | [Publisher apps index](https://marlvel.ai/api/llm/publishers/charalampos-baltzakis) | [Methodology](https://marlvel.ai/api/llm/methodology)
Data licensed under CC-BY-NC 4.0.