Phrasista vs ReadUnbound
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Phrasista
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Phrasista is an app for creating a sentence-based vocabulary notebook with generative AI. You can generate English sentences from your words and create audio file from those sentences from generative AI. Also, you can test your memory with fill-in-blank quizzes. Key Features: - Text Generator: You can generate English sentences from one word. - Audio Generator: You can create audio file from the sentences. - Quiz: You can test your vocabulary with fill-in-blank quizzes of your sentences. - Dictionary: You can look up the words highlighted in English dictionary. About Subscriptions: β Overview The app is free to use, but purchasing a subscription to the Premium plan will remove ads. You can transition to the purchase screen from the Plan in the settings. The first month is free. β Restoration When changing devices, you can restore your subscription. Please go to Purchase screen in this app. Please login to the same AppleID which you used at the time of purchase on your iPhone or iPad as your purchase is associated with your AppleID. β Cancellation If you want to cancel the subscription, please open Settings app in your iPhone or iPad and then go to Account -> Subscriptions. With this page, you also can check the timing of the next automatic renewal as well as cancel the auto-renewal. Even if you cancel the subscription, your data will not be deleted. You can continue to use this app as a free user. If the auto-renewal is not cancelled more than 24 hours before the end of the period, the subscription will be automatically renewed. β Point to Note Billing is done through your AppleID account, and cancellation cannot be done by any method other than the one mentioned above. β Terms & Conditions https://www.phrasista.com/terms-and-conditions/
ReadUnbound
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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 readersβwhether 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: 180β220 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 1β3 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
Screenshots
Verdict
The clearest difference is ads: ReadUnbound at none against Phrasista's shown. Phrasista's advantage is iOS requirement (12.0 vs 15.6). On price, update cadence, in-app purchases and device support there is nothing between them.
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
Both are free to download. Phrasista sells 1 in-app purchase, starting at $1.99 per month and ReadUnbound sells 5 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.
Phrasista ships an update every 3 weeks, ReadUnbound every 2 weeks. The most recent releases landed on September 14, 2026 and September 25, 2026 respectively.
| Parameter | Phrasista | ReadUnbound |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | Every 2 weeks β better |
| Ads | Yes | No β better |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 β better | 15.6 |
| Further details β not scored | ||
| Size | 309 MB | 84 MB |
| Age rating | 4+ | 4+ |
| Developer | Kengo Koizumi | Honghai Gu |
In-app purchases
Phrasista
- Monthly Premium1 Month trial$1.991 Month
ReadUnbound
- World of Example Monthly Plan$7.991 Month
- World of Example Yearly Plan$49.991 Year
- 500 Tokens$0.99
- 5000 Tokens$7.99
- 15000 Tokens$19.99









