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Dictionnaire Le Petit Robert icon
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Diagonal

For french language professionals, students, and crossword enthusiasts seeking authoritative, offline-capable linguistic resources.

4apps3.2(32)ReferenceGames

Snapshot

Who is Diagonal?

Providing authoritative French language reference tools and word game utilities for students, educators, and language enthusiasts.

Target audience

French language professionalsStudentsCrossword enthusiasts seeking authoritative

Active nemesis

Dmitry Zhuk

Other rivals

Portfolio

4
apps
Reference3
Games1

Last updated

Dictionnaire Le Robert Mobile

v11.0

1.1y ago

Maintenance

Publisher DNA

What defines Diagonal?

Publisher DNA

Primary focus

French language reference and word game utilities

Scale

indie

Target audience

French language professionals, students, and crossword enthusiasts seeking authoritative, offline-capable linguistic resources.

Signature Patterns

  • •Consistent paid-only pricing model across all titles
  • •Strong emphasis on offline functionality and data portability
  • •Integration of proprietary, expert-curated linguistic databases
  • •Focus on high-utility reference and puzzle-solving tools
Maintenance

Portfolio momentum

With zero releases in the last six months and one abandoned application, the publisher maintains a legacy portfolio rather than pursuing active growth.

Active apps 3Abandoned 1

Portfolio

What does Diagonal ship?

Apps

4 apps analysed

Linguistic depth sets a high standard for learners

  • The dictionary content provides comprehensive French definitions and usage examples that set a high standard for learners
  • Frequent application crashes force users to restart the software to regain access to dictionary functions

Single-market publisher, every app ships only to United States.

Based on 1 of 4 apps with localized market data, more coverage rolling in as scans complete · last scanned .

Americas (1)

  • United States1 / 1

Core markets (1/1 apps)

United States

User Sentiment

How do users feel about their apps?

0

Positive apps

1

Neutral / mixed

0

Negative apps

55/100

Avg sentiment score

Rivals

Who does Diagonal compete with?

The rivals identified

Nemeses(2)

Dmitry Zhuk

known forDictionnaire français

1 app4.8Reference

Both apps target French language learners with offline-first dictionary functionality, creating direct competition for the same user base despite the $19.99 price gap.

Firecracker Software

known forWord Breaker - Scrabble Cheat

1 app4.4Games

Both applications target word game players needing assistance with puzzles, but they diverge on input methods and pricing models.

Contenders(9)

Druide informatique

known forAntidote Mobile – French

1 app4.6Reference

Antidote Mobile competes for the French language reference market by offering a broader suite of linguistic tools, including writing guides and discovery modes, at a zero-cost entry point. This directly challenges the paid model of Le Robert Mobile by providing higher perceived value to students and language learners.

Editions Larousse

known forDictionnaire Larousse français

2 apps4.0Reference

Both apps target the French reference market with offline-first dictionary content, creating direct competition for students and language learners.

FB PUBLISHING

known forLe Littré

2 apps4.6Reference

Le Littré competes for the same French language reference audience by offering a historical dictionary, creating a direct overlap in utility for students and language enthusiasts.

Nealis

known forFrench verbs conjugation

1 app5.0Reference

Both apps target French language learners and offer offline-accessible reference content, creating direct competition for users seeking reliable linguistic tools.

Offline Wiktionary

known forGrand Tour French Dictionary

1 app5.0Reference

Both apps target French language learners with offline-first dictionary functionality, creating a direct conflict between the $19.99 premium model of Dictionnaire Le Robert Mobile and the free, ad-free offering of Grand Tour French Dictionary.

Petr Wagner

known forFrench-English dict. - DIC-o

1 app5.0Reference

DIC-o competes by offering a free, offline French-English dictionary, directly challenging the $19.99 price point of Le Robert Mobile for users seeking basic translation tools.

Salih Bektas

known forWord Generator: Find & Solve

1 app5.0Games

Both applications target word game enthusiasts needing assistance with puzzles, competing for the same user base through word-finding utilities.

Thomas Gesland

known forFrench Verbs Conjugations - Free App made by teachers

1 app4.1Reference

Both apps target French language learners with offline-first utility, creating direct competition for users seeking reliable, non-network-dependent reference tools.

YOSHIAKI OKUMA

known forverbes français

1 app4.0Reference

Both applications target French language learners, with the rival focusing on verb conjugation while Le Robert provides a broader dictionary. The overlap in utility for students creates a direct competition for users seeking specific linguistic reference tools.

Same space(23)

Angel Newton

known forConjugaison Française

1 app3.8Reference

Conjugaison Française serves the same French-learning audience by focusing on a comprehensive database of regular and irregular verb conjugations.

Arthur Roussel

known forFrench Dictionary Le Littré

1 app4.4Reference

French Dictionary Le Littré targets the same academic and writer audience by providing access to rare and archaic French vocabulary.

Cambridge University Press & Assessment (App)

known forCambridge English Dictionary

1 app3.0Reference

Cambridge English Dictionary targets the same language-learning audience by focusing on exam preparation for international proficiency tests.

CCM Benchmark

known forDictionnaire Linternaute

1 app3.9Reference

Dictionnaire Linternaute serves the same French-speaking audience but functions as a legacy traffic funnel for web properties.

Curiosity Media

known forDictionary.com: English Words

1 app4.2Reference

Dictionary.com targets the same student and professional base but differentiates through editorial content and a massive 2 million definition library.

DeepL SE

known forDictionary Linguee

1 app4.8Reference

Dictionary Linguee serves the same bilingual dictionary audience with a focus on professional lexicographer-compiled content.

Fabien Maurice

known forVérificateur Mots du SCRABBLE®

1 app4.7Reference

Vérificateur Mots du SCRABBLE serves the same crossword-solving audience but focuses specifically on Scrabble-authorized word validation.

Guidelia

known forDictionnaire

1 app4.8Reference

Dictionnaire targets the same student and translator audience by providing a digitized version of a sixteen-volume dictionary.

Ian Tipton

known forFrench Verb Conjugator

1 app3.2Reference

French Verb Conjugator targets the same French-learning audience with a specialized focus on verb conjugation and audio pronunciation.

Iqra Hasan

known forFrench Translator Offline

1 app3.6Reference

Traducteur Français Hors Ligne serves the same language-learning and traveler audience by providing quick offline translation between French and English.

Kontra Dijital Servisler Tic. A.Ş.

known forCalming Crosswords Puzzle

1 app4.7Games

This app shifts the user focus from utility assistance to a travel-themed gaming experience that competes for the same leisure time.

Merriam-Webster

known forMerriam-Webster Dictionary

1 app4.8Reference

Merriam-Webster competes for the same student and educator demographic by offering scholarly reliability and integrated word games.

MobiSystems

known forOxford Dictionary & Thesaurus

1 app4.3Reference

Oxford Dictionary targets the same academic and professional demographic by providing a 15-dictionary aggregator for comprehensive linguistic study.

Nguyen Thanh Nam

known forWord Streak: Play Daily Puzzle

1 app4.4Games

This game provides an alternative for users seeking word-based brain training without requiring an active internet connection.

NORMAND MARTIN

known forMots Croisés Classiques

1 app3.8Reference

Mots Croisés Classiques targets the same crossword-solving audience by providing a grid-based puzzle game with guided input features.

Romaneev Aleksey

known forAnagrams - Word Search Puzzle

1 app3.4Games

This app targets users interested in combinatorial word skills, acting as a direct alternative to the anagram resolution features of the source app.

Stefan Kuklinsky

known forWord Cheats (for Scrabble)

1 app4.6Games

This utility serves the same crossword enthusiast audience by providing direct word resolution based on specific rack and board constraints.

Tao Tuan Linh

known forFrench Dictionary & Translator

1 app4.3Reference

French Dictionary & Translator provides a similar bilingual dictionary and translation utility for French-English learners.

Theo Hoffenberg

known forReverso translate and learn

1 app4.7Reference

Reverso serves the same language-learning audience but captures daily engagement through a spaced repetition system and contextual translation engine.

Ultralingua

known forCollins-Robert Concise

2 apps4.8Reference

Collins-Robert Concise targets the same professional and student demographic by offering a specialized, high-precision offline linguistic database.

Vocabulous US

known forMot du jour — Daily French app

1 app4.5Reference

Mot du jour targets the same vocabulary-building audience but focuses on daily enrichment rather than reference utility.

WordReference.com

known forWordReference Dictionary

1 app4.2Reference

WordReference serves the same language-learning audience by providing community-driven forums for translation-related questions.

宁 桂

known forRecherche De Mot - Mots mêlés,Jeu de lettres

1 app4.1Games

This legacy product targets the same casual word puzzle demographic but lacks the active development cycle found in current utility apps.

The Analyst's Read

The bottom line on Diagonal

Bottom line

Diagonal SAS serves as a stable, brand-aligned repository for Le Robert's linguistic assets. Their strategy relies on brand equity and content depth rather than mobile-native growth tactics.

Frequently asked questions

How many apps does Diagonal publish?
Diagonal has 4 apps tracked by Marlvel, primarily in the Reference category.
What kind of apps does Diagonal make?
Diagonal's portfolio is concentrated in Reference and Games, with an average rating of 3.2/5 across rated apps.
What is Diagonal's top app?
By review volume across the portfolio, Dictionnaire Le Robert Mobile is Diagonal's best-known app tracked by Marlvel.
In how many countries are Diagonal's apps available?
Marlvel has tracked Diagonal's apps across 1 country.

What fed this analysis

Apps analyzed:
4
With full intel:
0
With overview:
4
Website scraped:
yes
Social presence:
yes

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 Diagonal, 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. “Diagonal intelligence.” Updated 2026-05-07. https://marlvel.ai/publishers/diagonal-sas

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Data licensed under CC-BY-NC 4.0