Comparison

Douglas App vs Bulb

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Douglas App

Features
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Douglas Business School E-Learning system.

About

Bulb

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Learn languages by reading real books and browsing websites. Tap any word for instant translation, build vocabulary from what you read, and improve your writing with AI feedback. Bulb is for people who want to learn through authentic content instead of gamified drills. Import EPUB books, browse foreign-language websites with built-in translation, and use AI feedback to improve your writing. === HOW IT WORKS === READ REAL BOOKS Import EPUB books in your target language. Tap any word for instant translation and pronunciation. Save words to your vocabulary as you read. Double-tap sentences for full context. Create bookmarks and highlights. BROWSE AND TRANSLATE WEBSITES Read news, articles, and blogs in your target language with built-in translation. Tap unfamiliar words for definitions. Save vocabulary while browsing. Practice with real-world content that interests you. BUILD VOCABULARY IN CONTEXT Every word you look up is saved with its original sentence. Review with spaced repetition flashcards generated from your reading. Practice translating sentences back and forth. Learn words as they are actually used. GET AI WRITING FEEDBACK Write essays, emails, or journal entries and receive detailed analysis of grammar, style, and vocabulary. See specific error patterns with visual charts. Get suggestions tailored to your level. Track your improvement over time. === WHO IT IS FOR === - Professionals improving business English or foreign-language writing for work - Students preparing for language exams with real reading and writing practice - Book lovers who want to read novels and nonfiction in other languages - Learners who prefer authentic content over artificial lessons and gamified drills === SUPPORTED LANGUAGES === English, Spanish, French, German, Chinese, Japanese, Italian, Portuguese, Russian, Korean, Arabic, Serbian === KEY FEATURES === - EPUB reader with tap-to-translate - Built-in web browser with instant translation - Automatic vocabulary capture with context - Spaced repetition flashcards - AI essay analysis with grammar, style, and vocabulary feedback - Writing progress tracking with visual charts - iCloud sync across all your iOS devices Built for focused reading, vocabulary, and writing practice without gamified drills. Requires internet connection for AI features and translation. Privacy Policy: https://thebulb.app/privacy Terms of Service: https://thebulb.app/terms

Screenshots

Douglas App4 screens

Verdict

The call

The clearest difference is in-app purchases: Douglas App at none against Bulb's 3. Douglas App also leads on iOS requirement (15.1 vs 17.0). Bulb's advantage is update cadence (every 5 days vs every 14 months). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Bulb sells 3 in-app purchases, starting at $2.99 per 7 days. Douglas App asks for nothing beyond the download.

UpkeepUpdate frequency

Douglas App ships an update every 14 months, Bulb every 5 days. The most recent releases landed on October 20, 2026 and October 15, 2026 respectively.

Scorecard3 real differences · 3 level
Douglas App versus Bulb: the parameters behind the verdict, then further details
ParameterDouglas AppBulb
PriceFreeFree
Update frequencyEvery 14 monthsEvery 5 days — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better17.0
Further details — not scored
Size26 MB40 MB
Age rating4+17+
DeveloperDouglas Business School (Hong Kong) LimitedDanis Gaiazov

In-app purchases

None

Douglas App

No in-app purchases

3 purchases

Bulb

Subscriptions3
  • Premium Weekly$2.997 Days
  • Premium Monthly7 Days trial$6.991 Month
  • Premium Annual7 Days trial$49.991 Year

Questions

Is Douglas App free?
Douglas App is free to download, with no in-app purchases.
Is Bulb free?
Bulb is free to download, with in-app purchases available.
Do Douglas App or Bulb have ads?
Neither Douglas App nor Bulb shows ads.
Which is updated more often, Douglas App or Bulb?
Douglas App ships an update every 14 months, and Bulb every 5 days. Most recently, Douglas App was updated on October 20, 2026 and Bulb on October 15, 2026.

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