Collins COBUILD Dictionary

Collins COBUILD Dictionary

By MobiSystems

Collins COBUILD Dictionary is a reference app for English language learners, providing definitions and usage examples derived from the Bank of English database on iOS.

The App DNA

What makes this app unique?

The app removes the cognitive friction of searching for precise grammatical usage patterns by providing full-sentence definitions and examples from a massive, curated corpus.

For English language learners and students requiring detailed grammatical context and usage patterns.

What does it look like?

Key features

Bank of English Databaseedge

Definitions and examples derived from a 650 million word corpus, providing academic authority that acts as a brand moat.

Camera Searchedge

Real-time word lookup via the device camera, increasing engagement for language learners.

Fuzzy Filter Searchstandard

Automatic spelling correction and wildcard patterns to reduce lookup friction.

How much does it cost?

paidSingle purchase at $11.99

The fixed-price model targets users avoiding subscription fatigue, though it limits the developer's ability to fund high-frequency feature updates.

Velocity

Steady developmentShow more...

See all version history

Who built it?

MobiSystems

13+ apps tracked · Reference

Quick Diagnosis & TreatmentQuick Diagnosis & TreatmentMobiOffice・Word Docs・Excel・PDFMobiOffice・Word Docs・Excel・PDFWebster’s College DictionaryWebster’s College DictionaryMobiPDF・PDF Text Editor・ReaderMobiPDF・PDF Text Editor・ReaderCollins Latin DictionaryCollins Latin DictionaryAdvanced Dictionary&ThesaurusAdvanced Dictionary&ThesaurusMobiOffice - SheetsMobiOffice - SheetsCollins World DictionaryCollins World DictionaryMobiOffice - DocsMobiOffice - DocsDorland’s Medical DictionaryDorland’s Medical DictionaryWebster Roget's A-Z ThesaurusWebster Roget's A-Z ThesaurusMobiScan: OCR Scanner・Scan PDFMobiScan: OCR Scanner・Scan PDF
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User Sentiment

What do users think recently?

How are ratings & reviews evolving?

App Store
4.42 · 43

Not enough recent reviews to extract reliable themes yet.

Read the full review analysis

Competition

Competitive landscape for Collins COBUILD Dictionary

How's the Reference market?

Collins COBUILD Dictionary maintains a niche position as a premium, one-time-purchase reference tool, currently ranking in the top 100 paid category charts across multiple international markets. The lack of recent major updates relative to subscription-based rivals signals a potential decline in long-term market share despite the app's high academic authority.

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The rivals identified

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The Analyst's Read

Key takeaways for Collins COBUILD Dictionary

Where is it heading?

The reference app market is consolidating around high-frequency, subscription-based platforms that prioritize social and gamified learning. Collins COBUILD Dictionary remains advantaged by its academic authority, but its maintenance-only posture leaves it exposed to rivals that offer more frequent content and UI refreshes, which will likely compress its market share over the next two quarters.

  • The app maintains a stable, one-time purchase model, which avoids subscription fatigue but limits the revenue available for high-frequency feature iteration.
  • The absence of major feature updates since 2018 risks technical obsolescence, which will eventually erode the app's competitive standing against modern, iterative reference tools.

The SWOT

Core Strengths
  • Bank of English database provides academic credibility that acts as a defensible brand moat.
  • Camera-based lookup provides high-utility engagement for language learners.
Critical Frictions 2 weaknesses inside
Growth Levers
  • Introducing a freemium tier could capture the casual learner segment currently lost to ad-supported dictionary alternatives.
Market Threats 1 threat identified

Next best moves

1 Pivot · 1 Maintain

Pivot to a freemium model because the current $11.99 barrier loses casual learners to free rivals → increase top-of-funnel install velocity.

+ 1 more prioritized move

The counter-intuitive read

The app's lack of updates is not just a weakness…

Read the full take

Since the last report: The app expanded its feature set with camera-based lookup and fuzzy search while formalizing its competitive disadvantage due to a lack of major updates since 2018. This shift highlights a transition from a static reference tool to a product actively struggling against modern subscription-based alternatives.

Bottom line

The app's academic authority remains a strong retention lever, but the lack of iterative updates since 2018 leaves it vulnerable to subscription-based rivals. Pivoting to a freemium model would unlock the casual learner funnel currently blocked by the $11.99 entry price.

Unlock 2 critical frictions, 1 market threat, 1 more prioritized move and the analyst’s take.

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FAQ

Is Collins COBUILD Dictionary worth the $11.99 price?
The app is best for users who prefer a one-time purchase over recurring subscriptions and value academic-grade definitions from the Bank of English database.
How does this compare to free dictionary apps?
Unlike many free, ad-supported apps, Collins COBUILD Dictionary offers a curated, academic-grade database without intrusive ads, though it lacks the frequent feature updates and social elements found in modern alternatives.
Does the app receive regular updates?
The app has not received a major feature update since 2018, focusing primarily on maintenance and minor interface adjustments.
What are some free alternatives for language learners?
Users seeking free alternatives should consider ad-supported dictionary apps or subscription-based learning platforms that offer more frequent content updates and interactive features.

Sources

  1. [1] App Store, source

Report last updated

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 Collins COBUILD Dictionary, its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

What's new

The app expanded its feature set with camera-based lookup and fuzzy search while formalizing its competitive disadvantage due to a lack of major updates since 2018. This shift highlights a transition from a static reference tool to a product actively struggling against modern subscription-based alternatives.

added

Camera Search and Fuzzy Filter Search

shifted

Maintenance-only status

added

New SWOT entries

Cite this report

Marlvel.ai. “Collins COBUILD Dictionary Intelligence Report.” Updated Aug 1, 2026. https://marlvel.ai/apps/collins-cobuild-dictionary

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