Leon Ehrwein

Known for

JassScore - Jass ScoreKeeper

1app4.3(61)

Top rival

Chintan Patel

Other rivals

Portfolio

Free 1

Publisher DNA

AI intelligence is not yet available for Leon Ehrwein. The portfolio data below is up to date.

Portfolio

Apps

1 app analysed

Sort by

JassScore - Jass ScoreKeeper

4.3(61)

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Ad-free environment sustains user trust

Straightforward scorekeeping interface mimics physical pen and paper for quick game setup
Critical data loss occurs during long sessions following the latest update

Tightly focused on 3 markets (France, Germany, United States).

Based on 1 of 1 app with localized market data · last scanned May 2026.

Americas (1)

User sentiment

Positive apps

Neutral / mixed

Negative apps

55/100

Avg sentiment score

Top performer

JassScore - Jass ScoreKeeper

Mixed sentiment

Rivals

The rivals identified

Same space(4)

Chintan Patel

known forTCG Card Scanner - CardScan

1 app

So what?

Strategic outlook coming soon.

Frequently asked questions

How many apps does Leon Ehrwein publish?

Leon Ehrwein has 1 app tracked by Marlvel, primarily in the Utilities category.

What kind of apps does Leon Ehrwein make?

Leon Ehrwein's portfolio is concentrated in Utilities, with an average rating of 4.3/5 across rated apps.

Last updated

JassScore - Jass ScoreKeeper

v2.0.0

1.5y ago

Europe (2)

France1 / 1
Germany1 / 1

Core markets (1/1 apps)

FranceGermanyUnited States

This app competes for the same utility-focused user base by offering automated data capture and organization for physical collections.

Corey Tess

known forLorscana: TCG Card Scanner

1 app3.9Utilities

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Both apps serve niche hobbyist communities by providing specialized utility tools for tracking and managing physical game components.

Main Street Code

known forEuchre Tournament ScoreKeeper

1 app2.9Utilities

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This app targets the same demographic of card game enthusiasts who require structured scorekeeping for specific traditional games.

Marcos Alan Gonzalez Schtulmann

known forDragon Counter: MTG Life Total

1 app4.9Utilities

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Like JassScore, this app focuses on the 'at-the-table' experience, providing a digital interface for tracking game state and scores.

New entrants(2)

Funattic Studio

known forRecord Shelf: CD & Vinyl

1 app0.0Utilities

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While in a different hobby category, it competes for the same 'collection management' utility market share as JassScore.

Pista Devi

known forMTG Card Scanner - MC9

1 app0.0Utilities

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What is Leon Ehrwein's top app?

Based on user sentiment and following across the portfolio, JassScore - Jass ScoreKeeper stands out as Leon Ehrwein's flagship app tracked by Marlvel.

In how many countries are Leon Ehrwein's apps available?

Marlvel has tracked Leon Ehrwein's apps across 3 countries.

This newcomer threatens the utility space by applying AI-driven automation to physical card assessment and management.

Snapshot

Publisher DNA

Portfolio

Apps

Americas (1)

User sentiment

Rivals

The rivals identified

Same space(4)

So what?

Frequently asked questions

Europe (2)

Core markets (1/1 apps)

New entrants(2)