Comparison

Guava.ai vs ReadUnbound

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

Head to head
About

Guava.ai

Features
Read full description

Guava is a custom chatbot. You can have your very own personal assistant without breaking a sweat. It's tailor-made to fit your needs, can handle a wide range of tasks, and gets smarter over time. You may purchase an auto-renewing subscription through an In-App Purchase. β€’ Auto-renewable subscription β€’ 1 month ($4.99) and 1 year($34.99) durations β€’ Your subscription will be charged to your iTunes account at confirmation of purchase and will automatically renew (at the duration selected) unless auto-renew is turned off at least 24 hours before the end of the current period. β€’ Current subscription may not be cancelled during the active subscription period; however, you can manage your subscription and/or turn off auto-renewal by visiting your iTunes Account Settings after purchase β€’ Privacy policy: http://bolderai.com/privacy-policy β€’ Terms of use: http://bolderai.com/term-conditions

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

Screenshots

Guava.ai4 screens
ReadUnbound4 screens

Verdict

The call

The clearest difference is ads: ReadUnbound at none against Guava.ai's shown. ReadUnbound also leads on update cadence (every 2 weeks vs every 6 months). On price, in-app purchases, device support and iOS requirement 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

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

Both are free to download. Guava.ai sells 2 in-app purchases, starting at $4.99 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.

UpkeepUpdate frequency

Guava.ai ships an update every 6 months, ReadUnbound every 2 weeks. The most recent releases landed on September 9, 2026 and September 25, 2026 respectively.

Scorecard2 real differences Β· 4 level
Guava.ai versus ReadUnbound: the parameters behind the verdict, then further details
ParameterGuava.aiReadUnbound
PriceFreeFree
Update frequencyEvery 6 monthsEvery 2 weeks β€” better
AdsYesNo β€” better
In-app purchasesYesYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 β€” better15.6
Further details β€” not scored
Size1 MB84 MB
Age rating4+4+
DeveloperYujuan JiangHonghai Gu

In-app purchases

2 purchases

Guava.ai

Subscriptions2
  • Monthly Subscription$4.991 Month
  • Yearly Subscription$34.991 Year
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

Questions

Is Guava.ai free?
Guava.ai is free to download, with in-app purchases available.
Is ReadUnbound free?
ReadUnbound is free to download, with in-app purchases available.
Do Guava.ai or ReadUnbound have ads?
Guava.ai shows ads; ReadUnbound does not.
Which is updated more often, Guava.ai or ReadUnbound?
Guava.ai ships an update every 6 months, and ReadUnbound every 2 weeks. Most recently, Guava.ai was updated on September 9, 2026 and ReadUnbound on September 25, 2026.

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