Comparison

8lingo vs Yields Plus Pro

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

Head to head
About

8lingo

Features
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Unlock the power of language learning with Infinite Lingo, your 24/7 AI language tutor. Master Mandarin faster and smarter with personalized lessons, real-life scenarios, and cultural immersion—all powered by cutting-edge AI. Whether you're a beginner or advancing your skills, Infinite Lingo makes learning effective, engaging, and affordable. **Why choose Infinite Lingo?** - Learn 2.6x Faster – AI-driven lessons adapt to your pace and goals for maximum efficiency. - Practice All Skills – Master speaking, listening, reading, writing, and cultural nuances with comprehensive lessons. - Professional HSK Curriculum – Structured learning aligned with HSK levels to guide you from beginner to fluency. - 24/7 AI Tutors – Learn anytime, anywhere—no scheduling required. - Real-Life Scenarios – Role-play, quizzes, and practical exercises for immersive learning. - Affordable & High-Quality – Get premium language education at a fraction of traditional tutoring costs. Infinite Lingo is starting with Mandarin and will soon expand to other languages. Stay tuned for a growing library of languages! **Who Is Infinite Lingo For?** - Beginners – Start from scratch and build a strong foundation in Mandarin Chinese. Perfect for those new to the language or looking to refresh their skills. - Intermediate Learners – Improve your speaking, listening, reading, and writing skills with advanced lessons designed to take your Mandarin to the next level. - Advanced Learners – Refine your fluency and master cultural nuances with real-life scenarios that prepare you for authentic conversations. - Busy Professionals – Learn on your schedule with 24/7 access to your AI tutor. Fit language learning into your busy lifestyle without compromising on quality. - Travelers – Prepare for your trip to China with practical, real-world language skills that help you navigate, connect, and immerse yourself in the culture. - Social Media & Content Enthusiasts – Join the growing community of learners mastering Chinese to engage with trending content, connect with global creators, and explore new opportunities. Infinite Lingo helps you learn the language quickly and effectively, so you can stay ahead in the digital world. **What Makes Infinite Lingo Unique?** Infinite Lingo is more than just a language learning app—it’s your personal AI-powered tutor for Mandarin Chinese. Whether you're learning for travel, work, or personal growth, our app combines cutting-edge AI technology with immersive cultural insights to help you achieve fluency faster. - Personalized Learning – Every lesson is tailored to your goals, whether you're a beginner or an advanced learner. - Professional HSK Curriculum – Follow structured HSK courses from Level 1 to Level 6, covering vocabulary, grammar, and practice exercises. - Cultural Immersion – Go beyond vocabulary and grammar—understand the culture and traditions behind the language. - Expand Your Horizons – While we’re starting with Mandarin, stay tuned for more languages coming soon! **Start Your Language Learning Journey Today!** Ready to master Mandarin and unlock new opportunities? Download Infinite Lingo now and experience the future of language learning. With personalized AI lessons, immersive cultural insights, and a Professional HSK Curriculum, you’ll be speaking Chinese faster than you ever thought possible. **Legal Information** This app uses Apple's Standard License Agreement (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ For more details, visit: - Terms of Service: https://www.8lingo.com/tos - Privacy Policy: https://www.8lingo.com/privacy Need help? Contact us at support@8lingo.com.

About

Yields Plus Pro

Features
Read full description

Yields Plus Pro Professional Treasury Data Visualization & Analysis Yields Plus Pro provides comprehensive access to U.S. Treasury yield data with powerful visualization tools designed for investors, analysts, students, and anyone interested in understanding bond markets and economic indicators. Key Features: Multiple Visualization Types: • Yield Curve Charts - Visualize the complete yield curve with interactive duration selection and Catmull-Rom spline interpolation for accurate yield estimation at any maturity • Time Series Graphs - Track individual Treasury maturities over time with up to 11 periods displayed simultaneously on customizable multi-series charts • Yearly Comparison Graphs - Compare up to three individual Treasury maturities for successive years on the same chart to see how they have varied over the years • Yield Spread Analysis - Calculate and visualize spreads between any two maturities to identify curve steepening, flattening, or inversion patterns Comprehensive Data Coverage: • Daily Treasury Yields - Access to 15+ years of daily Constant Maturity Treasury (CMT) data from 2010 to present • Monthly Nominal Yields - Historical monthly data spanning decades for long-term trend analysis • Monthly TIPS Data - Real (inflation-adjusted) yields from Treasury Inflation-Protected Securities (TIPS) Interactive Analysis Tools: • Tap or Drag - Explore yields at any point by tapping or dragging across charts • Smart Year Range Slider - Navigate quickly through historical data with an intelligent dual-thumb slider that automatically maintains optimal performance windows • Synchronized Views - Table and chart selections stay synchronized for seamless data exploration • Period Selection - Choose which maturities to display (1-month through 30-year plus Long Term Average) Automatic Data Management: • Background Updates - App automatically fetches the latest Treasury data from official sources • Data Validation - Extensive data validity tests and checks to ensure integrity of the database • Intelligent Caching - Pre-calculated chart data for instant visualization without delays • Offline Access - Once downloaded, analyze data without an internet connection • Efficient Storage - Optimized database ensures minimal device storage usage Professional Design: • Native iOS Interface - Built entirely with SwiftUI for smooth, responsive performance • iPad Optimization - Split-view layout with side-by-side table and chart display • iPhone Optimization - Streamlined interface perfect for quick market checks on the go • Dark Mode Support - Comfortable viewing in any lighting condition Platform-Specific Features: iPad Experience: • Dual-pane layout with data table and charts displayed simultaneously • Tap any table row to instantly update all visualizations • Full access to 15+ years of daily data (2010-present) iPhone Experience: • Optimized single-view interface for quick analysis • Swipe between yield curves, time series, yearly comparisons, and yield spreads charts • Quick-access date picker for recent data • Focused on recent 5+ years of data for optimal performance Perfect For: • Financial professionals tracking bond market conditions • Investors monitoring yield curve signals and economic indicators • Students learning about fixed income markets and economics • Anyone interested in understanding Treasury yields and the yield curve Privacy Focused: • No personal data collection • No advertising • No tracking • All data stored locally on your device Data Source: Official U.S. Federal Reserve Bank XML feeds, updated daily Note: This app provides historical and current Treasury yield data for educational and informational purposes. It is not financial advice. Always consult with qualified financial professionals before making investment decisions. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

8lingo4 screens
Yields Plus Pro4 screens

Verdict

The call

The clearest difference is ads: Yields Plus Pro at none against 8lingo's shown. 8lingo's advantage is iOS requirement (14.0 vs 26.0). On price, update cadence, in-app purchases 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. 8lingo sells 2 in-app purchases, starting at $8.99 per month and Yields Plus Pro sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

8lingo ships an update monthly, Yields Plus Pro every 5 weeks. The most recent releases landed on October 4, 2026 and October 7, 2026 respectively.

Scorecard2 real differences · 4 level
8lingo versus Yields Plus Pro: the parameters behind the verdict, then further details
Parameter8lingoYields Plus Pro
PriceFreeFree
Update frequencyMonthly — betterEvery 5 weeks
AdsYesNo — better
In-app purchasesYesYes
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS14.0 — better26.0
Further details — not scored
Size104 MB6 MB
Age rating4+4+
DeveloperKim Hoe TaiMSYapps

In-app purchases

2 purchases

8lingo

Subscriptions2
  • Monthly Subscription3 Days trial$8.991 Month
  • Annual Subscription7 Days trial$59.991 Year
2 purchases

Yields Plus Pro

Subscriptions2
  • Yields Plus Pro$0.991 Month
  • Yields Plus Pro - Annual7 Days trial$9.991 Year

Questions

Is 8lingo free?
8lingo is free to download, with in-app purchases available.
Is Yields Plus Pro free?
Yields Plus Pro is free to download, with in-app purchases available.
Do 8lingo or Yields Plus Pro have ads?
8lingo shows ads; Yields Plus Pro does not.
Which is updated more often, 8lingo or Yields Plus Pro?
8lingo ships an update monthly, and Yields Plus Pro every 5 weeks. Most recently, 8lingo was updated on October 4, 2026 and Yields Plus Pro on October 7, 2026.

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