Chess Coach Lite icon
Chess Coach Pro icon
Notation: Chess Coach icon
+4

Igor Zelka

For chess players and trivia enthusiasts ranging from beginners to advanced users who prefer offline, distraction-free study tools.

7apps2.5(43.4K)GamesTrivia

Snapshot

Who is Igor Zelka?

Providing specialized chess training and educational trivia through offline-first, ad-free mobile experiences. Focused on self-study tools for enthusiasts seeking focused, distraction-free learning.

Target audience

Chess playersTrivia enthusiasts ranging from beginners to advanced users who prefer offlineDistraction-free study tools

Active nemesis

Dawid Wrzesinski

Other rivals

Portfolio

Free 4
7
apps
Games6
Trivia1

Last updated

Notation: Chess Coach

v3.12

1y ago

Active

Publisher DNA

What defines Igor Zelka?

Publisher DNA

Primary focus

Chess training and educational trivia apps

Scale

indie

Target audience

Chess players and trivia enthusiasts ranging from beginners to advanced users who prefer offline, distraction-free study tools.

Signature Patterns

  • •Strong preference for offline-first functionality across all titles
  • •Monetization model favors one-time paid or free-to-play without ads
  • •Focus on educational feedback and analytical depth rather than social or competitive play
  • •Consistent use of classic 2D interfaces for board and quiz navigation
Active

Portfolio momentum

Released 12 updates across 7 apps in the last 6 months, with the top-tier chess titles receiving updates within the last 30 days.

Last release 25d agoActive apps 3Abandoned 4

Portfolio

What does Igor Zelka ship?

Apps

7 apps analysed

Chess Coach Pro icon
Chess Coach Pro

Improve your chess skills with a thematic collection of puzzles and openings!

4.5(2.5K)
Notation: Chess Coach icon
Notation: Chess Coach

Play chess online against players effectively after learning tactics, strategy

4.3(40.9K)

Distributed across 8 markets, strongest in Europe.

Based on 2 of 7 apps with localized market data, more coverage rolling in as scans complete · last scanned .

Americas (3)

  • United States2 / 2
  • Brazil1 / 2
  • Mexico1 / 2

Europe (5)

  • France1 / 2
  • Germany1 / 2
  • Italy1 / 2
  • Portugal1 / 2
  • Spain1 / 2

Core markets (2/2 apps)

United States

Rivals

Who does Igor Zelka compete with?

The rivals identified

Nemeses(1)

Dawid Wrzesinski

known forChessThink: Chess Analysis

1 app4.7Games

Both applications target chess players using Stockfish for game evaluation, creating direct competition for users seeking engine-based analysis tools.

Same space(19)

A Trillion Games

known for3D Chess Game

1 app4.2Games

It focuses on visual simulation and tournament modes for casual players, contrasting with the source app's coaching focus.

CC Games sp. z o.o.

known forChess Online - Clash of Kings

1 app4.7Games

It expands the audience scope by integrating social features like clans and tournaments that the source app lacks.

Chess King

known forChess King - Learn to Play

1 app4.6Games

It competes for the serious student demographic by offering a structured, curriculum-based learning path that complements the source app's coaching.

Chess.com

known forChess - Play & Learn Online

1 app4.8Games

It competes for the same audience by offering a massive ecosystem of play and professional coaching that dwarfs the offline-first focus of the source app.

Christophe Théron

known forChess without ads

2 apps4.6Games

It directly competes for the ad-averse user base by offering a distraction-free learning environment that mirrors the source app's core value.

Emotix

known forSquare Off Chess- Play & Learn

1 appGames

It offers a similar AI-driven training experience but struggles with low user sentiment and technical performance issues.

GamoVation

known forChess - Offline Board Game

1 app4.8Games

It competes for the casual offline player but suffers from aggressive ad-monetization that the source app avoids.

Marina Anisovich

known forChess: 2 Players!

1 app4.7Games

It serves the casual, social-play audience by prioritizing local device-sharing and simple online matchmaking.

Noctie

known forNoctie Chess Trainer

1 app4.5Games

It competes for the training-focused audience by offering a human-like AI that adapts to the user's level.

Optime Software

known forChess ∙

1 app4.6Games

It targets the same beginner-to-casual demographic but relies on a legacy engine and aggressive ad-monetization that contrasts with the source app's ad-free approach.

Sailendu Behera

known forReal Chess 3D

1 app4.7Games

It targets casual players interested in visual customization rather than the analytical training focus of the source app.

SayGames

known forChess Royale

1 app4.4Games

It targets the same beginner-to-intermediate audience but relies on a subscription-based model that contrasts with the source app's free approach.

Setse

known forChess Move - Stockfish Engine

1 app3.8Games

It provides a specialized analysis tool for players who want to calculate moves using cloud-based Stockfish servers.

Ted Wong

known forSmallFish Chess for Stockfish

1 app4.8Games

It serves the professional-grade analysis niche by offering a privacy-focused, ad-free tool for serious study.

The Chess Solitaire Sudoku Factory

known forChess - Learn, Play & Trainer

1 app4.6Games

It captures the casual segment through a no-login entry and offline accessibility that mirrors the source app's ease of use.

Vinta Games

known forChess Prime 3D

1 app4.6Games

It serves the same casual audience but shifts the focus toward visual immersion and 3D board perspectives rather than the source app's analytical coaching.

Vintolo

known forChess

1 app4.7Games

It provides a similar utility-focused chess experience but lacks the specialized AI-driven coaching engine found in the source app.

Woodchop Software

known forSocialChess • Online Chess

1 app4.5Games

It caters to players seeking asynchronous correspondence play in an ad-free, privacy-focused environment.

Wuhan Dobest Information Technology Co

known forChess - Chess Online

1 app4.6Games

It provides a versatile platform for both beginners and advanced players, utilizing a subscription model for monetization.

New entrants(2)

karthichess

known forChessAura

1 appGames

It targets ambitious players with high-level coaching content created by a Grandmaster.

SocialPlay AI

known forBlunder Zero : Chess Coach

1 app0.0Games

It focuses on personalized review of the user's own games to identify recurring mistakes, mirroring the source app's analytical goal.

The Analyst's Read

The bottom line on Igor Zelka

Bottom line

This publisher is a specialized indie developer that has successfully captured a loyal user base by rejecting standard ad-heavy mobile monetization. Their reliance on high-utility, offline chess tools provides a stable, albeit non-scalable, product-market fit.

Frequently asked questions

How many apps does Igor Zelka publish?
Igor Zelka has 7 apps tracked by Marlvel, primarily in the Games category.
What kind of apps does Igor Zelka make?
Igor Zelka's portfolio is concentrated in Games and Trivia, with an average rating of 2.5/5 across rated apps.
What is Igor Zelka's top app?
By review volume across the portfolio, Notation: Chess Coach is Igor Zelka's best-known app tracked by Marlvel.
In how many countries are Igor Zelka's apps available?
Marlvel has tracked Igor Zelka's apps across 8 countries.

What fed this analysis

Apps analyzed:
7
With full intel:
0
With overview:
7
Website scraped:
yes
Social presence:
no

Disclosure: Independent intel to help mobile builders succeed.

AI-powered analysis with automated quality gates, built from publicly available sources. Marlvel.ai is not affiliated with, endorsed by, or sponsored by Igor Zelka, its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

Cite this report

Marlvel.ai. “Igor Zelka intelligence.” Updated 2026-05-09. https://marlvel.ai/publishers/igor-zelka

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Data licensed under CC-BY-NC 4.0