Comparison

ReadUnbound vs Vocabulary

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

Head to head
About

ReadUnbound

Features
Read full description

Love reading, but finding dense books, complex foreign literature, or heavy technical documents an exhausting chore? Most learning apps keep you trapped matching pictures to basic words. ReadUnbound is engineered for serious readersβ€”whether you are an intermediate-to-advanced language learner (A2 to C1), a test-taker preparing for high-stakes exams, or a professional (lawyer, medical student, researcher) navigating dense jargon without dictionary fatigue. Powered by Second Language Acquisition (SLA) science and adaptive AI, ReadUnbound turns reading into effortless vocabulary mastery. Read compelling stories calibrated precisely to your reading level, import your own documents, tap unfamiliar words to harvest them instantly, and let our intelligent Daily Flow guide you to total mastery. TRANSPARENT AI INTEGRATION ReadUnbound uses AI to craft contextual stories, breakdowns, and exercises. Browse pre-cached content for free. For real-time lookups and custom docs, bring your own API key (OpenAI, Gemini, Anthropic) or upgrade to Pro for zero-setup access. WHY READUNBOUND IS DIFFERENT 1. READ WHAT YOU LOVE & IMPORT YOUR OWN Skip generic textbook dialogues. Read adapted world literature across CEFR levels, or import your own materials: β€’ Curated Excerpts: 180–220 word reads across Sci-Fi, Business, Law, Medicine, and Classics. β€’ Text Import: Import papers or legal briefs to target specialized terminology. β€’ 1-Tap Harvesting: Tap any word for instant, level-appropriate definitions and add it directly to review. 2. DEEP LEXICAL ANALYSIS & ANATOMY Move beyond static flashcards: β€’ Select-to-Explain: Highlight any phrase or sentence for full-sentence meaning plus word-by-word syntactic breakdowns. β€’ Compare Words: Deconstruct subtle differences between synonyms. β€’ Word Anatomy: Definitions, real-world examples, Latin roots, CJK radical decomposition. 3. 3-TIER SRS Strengthen recall through progressive exercises and spaced repetition. β€’ Tier 1 Receptive: basic recognition β€’ Tier 2 Structural: reinforce word form and structure β€’ Tier 3 Productive: construct original sentences, graded by AI. 4. CRAM MODES & TARGETED DRILLS β€’ Exam Prep: Targeted sprints for SAT, GRE, GMAT, TOEFL, IELTS, USMLE, and Bar Exam. β€’ Weak-Point Recovery: Clear bottlenecks with rapid 1–3 minute micro-drills. 5. PREDICTIVE FLUENCY INSIGHTS β€’ Linguistic Velocity: Track words moving from recognition to active production. β€’ Recall Latency: Measure retrieval speed down to the millisecond. 6. 70+ LANGUAGES & ADAPTIVE SCAFFOLDING β€’ L2 Immersion: Target-language definitions for direct immersion. β€’ L1 Scaffolding: Toggle native-language previews whenever you need quick clarity. FAIR MONETIZATION: β€’ Pro Subscription: Unlimited AI, all-inclusive, zero setup. β€’ Lifetime Pass (BYOK): Pay once, own the app forever. Use your own OpenAI, Gemini, or Anthropic API key with zero AI markup. β€’ Free: Core spaced repetition, curated excerpts, and quick-paste sampling. Graduate from basic apps. Master words by reading with ReadUnbound today! Terms of service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy https://derekcool.github.io/privacypolicy.html

About

Vocabulary

Features
Read full description

Vocabulary-Builder is designed to make learning languages simple, effective, and enjoyable. Whether you’re starting your first foreign language or aiming to polish your fluency, Vocabulary-Builder gives you the tools you need to succeed. With daily word challenges, smart quizzes, and engaging practice sessions, you’ll steadily grow your vocabulary and confidence. Vocabulary-Builder adapts to your personal learning style, helping you master new words at your own pace. The app uses proven methods like spaced repetition and contextual examples to make sure every word sticks. You’ll not only memorize terms, but also learn how to use them naturally in conversations, writing, and real-life situations. Perfect for students, travelers, and professionals alike, Vocabulary-Builder makes it easy to fit language learning into your daily routine. Whether you want to expand your vocabulary for school, improve your career opportunities, or feel more confident while traveling, this app has you covered. With Vocabulary-Builder, every word learned is a step closer to fluency. The app motivates you to stay consistent, tracks your progress, and celebrates your achievements. Start building your vocabulary today with Vocabulary-Builder and open the door to a world of languages, cultures, and new opportunities.

Screenshots

ReadUnbound4 screens
Vocabulary3 screens

Verdict

The call

ReadUnbound and Vocabulary are too close to call on the numbers: across 5 compared parameters β€” price, ads, in-app purchases and device support among them β€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. ReadUnbound sells 5 in-app purchases, starting at $7.99 per month and Vocabulary sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
ReadUnbound versus Vocabulary: the parameters behind the verdict, then further details
ParameterReadUnboundVocabulary
PriceFreeFree
Update frequencyEvery 2 weeksβ€”
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.6
Further details β€” not scored
Size84 MB3 MB
Age rating4+4+
DeveloperHonghai GuOmar Ahmed

In-app purchases

5 purchases

ReadUnbound

Subscriptions2
  • World of Example Monthly Plan$7.991 Month
  • World of Example Yearly Plan$49.991 Year
One-time3
  • 500 Tokens$0.99
  • 5000 Tokens$7.99
  • 15000 Tokens$19.99
2 purchases

Vocabulary

Subscriptions2
  • Pro Access (Weekly)3 Days trial$4.997 Days
  • Pro Access (Yearly)$49.991 Year

Questions

Is ReadUnbound free?
ReadUnbound is free to download, with in-app purchases available.
Is Vocabulary free?
Vocabulary is free to download, with in-app purchases available.
Do ReadUnbound or Vocabulary have ads?
Neither ReadUnbound nor Vocabulary shows ads.

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