Lexicon vs ChartBuddy
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Lexicon
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Lexicon is a vocabulary learning application that helps users learn and practice vocabulary through flashcards, spaced repetition, and AI-powered import features. KEY FEATURES: • Cross-platform sync: Your vocabulary stays synchronized across different devices • AI-powered imports: Extract vocabulary from pasted text, uploaded files, or screenshots • Guided learning: Structured stages and spaced repetition help you move from discovery to mastery • Offline-first: Learn anywhere, anytime with local storage SUBSCRIPTION INFORMATION: Lexicon offers an optional auto-renewable subscription (Lexicon Pro) that provides access to advanced features including AI Powered import functionality. Subscription pricing and terms are clearly displayed within the app before purchase. All core vocabulary learning features are available in the free version. Free features include: - Basic vocabulary management - Core learning features Premium subscription features (requires separate purchase): - AI import via screenshot or image - Export and Share Vocabulary - Priority support TERMS OF USE: By downloading and using Lexicon, you agree to our Terms of Service. Please review our Terms of Service at: https://alirezaiyan.com/lexicon/terms PRIVACY POLICY: Your privacy is important to us. Please review our Privacy Policy at: https://alirezaiyan.com/lexicon/privacy SUPPORT: For support, questions, or feedback, please visit: https://alirezaiyan.com/lexicon or contact us at info@alirezaiyan.com Lexicon is open source software. View the source code at: https://github.com/rezaiyan/Lexicon
ChartBuddy
This app serves as a comprehensive pocket guide for traders of all levels, explaining complex trading terms, indicators, and patterns with custom diagrams and cheat sheets. It aims to build trading knowledge without requiring paid courses or subscriptions. The content is fully offline and organized into 12 categories.
- 195+ trading topics illustrated with diagrams
- Explanations of candlestick and chart patterns
- Definitions for indicators and smart money concepts
- Fibonacci and market structure guides
- Risk management and trading psychology sections
- Fully offline access
- Quizzes and flashcards for learning
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Learn Trading Faster with ChartBuddy, whether you are a day trader, swing trader, scalper, prop trader, firm trader using funded accounts etc.. ChartBuddy is an all-in-one, interactive trading learning app that combines a searchable trading handbook, AI trading assistant, trading psychology trainer, interactive quizzes, flashcards, daily trading game / simulator and a visual reference library to help you master technical analysis. Whether you're learning trading for the first time or improving your existing skills, ChartBuddy explains trading terminology step by step. See something unfamiliar on a chart? Search for an explanation, browse a visual cheat sheet or ask Buddy for an instant answer. --- ONE APP. 873+ TRADING CONCEPTS. Stop switching between YouTube videos, Google searches, trading forums and scattered bookmarks. ChartBuddy brings together trading concepts into one searchable reference that works completely offline. --- WHY TRADERS USE CHARTBUDDY • Learn technical analysis faster • Read charts with confidence • Search trading terms instantly • Practice with flashcards & quizzes • Train trading psychology • Trading Simulator • Learn Day Trading Faster • Practice Trading / Paper Trading --- AI TRADING ASSISTANT Learn how to trade and read charts. Ask Buddy questions about candlestick patterns, chart patterns, indicators, Smart Money Concepts, market structure and trading terminology. Upload a chart screenshot and receive clear educational explanations in seconds. --- BUILD TRADER DISCIPLINE PSYCHOLOGY Develop better trading habits through interactive psychology training, trading psychology. Practice realistic trading scenarios that strengthen discipline, emotional control and decision making. Learn to avoid common mistakes like FOMO, revenge trading, overtrading and impulsive entries before risking real money. --- QUICK-REFERENCE TRADING TOOLS Keep ChartBuddy, your day trading guide beside your charts whenever you need to check something quickly. • Visual candlestick cheat sheets • Chart pattern reference grids • Searchable trading glossary • Indicator guides • Smart Money Concepts etc --- CANDLESTICK & CHART PATTERNS Learn Hammer, Doji, Engulfing, Morning Star, Shooting Star, Harami, Three White Soldiers, Head & Shoulders, Double Top, Triangles, and more. Every lesson includes clear diagrams, explanations, confirmation clues and market context. --- TECHNICAL ANALYSIS & INDICATORS Master RSI, MACD, EMA, SMA, VWAP, Bollinger Bands, Volume Profile and more. Understand what each trading indicator measures, when traders use it and how it fits into a complete technical analysis strategy. --- SMART MONEY CONCEPTS Explore Order Blocks, Fair Value Gaps, BOS, CHOCH, Liquidity Sweeps, SMT Divergence and more. --- MARKETS, PRICE ACTION & RISK MANAGEMENT Learn Stocks, Forex, Futures, Options, Crypto, ETFs and Indices. Master price action, support & resistance, market structure, volume, risk management, position sizing, stop loss, take profit and capital management. --- FLASHCARDS, QUIZZES & REVIEW Strengthen your memory with flashcards, quizzes and active recall. Review missed questions, revisit weak topics and reinforce your understanding through repetition. --- FEATURES • 873+ trading concepts • AI Trading Assistant / AI Trading coach • Trading Psychology Trainer / Trading Simulator / Trading Game • Use our app to learn your favorite trading strategy • Guided Learning Paths / Trading Lesson • Visual cheat sheets • Interactive flashcards • Trading Quizzes & Review Bank • Beginner to advanced content • Fully offline trading guide • Use our app alongside your favorite trading platform, be it TradingView, Metatrader, Robinhood, Binance, etc to quickly reference. --- ChartBuddy is an educational learning app and does not provide financial advice, trading signals or guarantee trading outcomes. Terms of Use: https://chartbuddy.co/terms Privacy Policy: https://chartbuddy.co/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: Lexicon at none against ChartBuddy's 10. On price, update cadence, 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
Both are free to download. ChartBuddy sells 10 in-app purchases, starting at $9.99 per month. Lexicon asks for nothing beyond the download.
Lexicon ships an update every 9 days, ChartBuddy every 2 weeks. Both last shipped on November 5, 2026.
| Parameter | Lexicon | ChartBuddy |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.9 (188 ratings) — better |
| Positive reviews | — | 91.7% of reviews |
| Number of ratings | — | 188 — better |
| Update frequency | Every 9 days — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.3 | 15.1 — better |
| Further details — not scored | ||
| Size | 106 MB | 78 MB |
| Age rating | 4+ | 4+ |
| Developer | Ali Rezaiyan | Noesisco |
In-app purchases
Lexicon
No in-app purchases
ChartBuddy
- Chart Coach Monthly$9.991 Month
- All Access Monthly$19.991 Month
- Chart Coach Annual$59.991 Year
- ChartBuddy Stocks Add-On$5.99
- ChartBuddy Forex Add-On$5.99
- ChartBuddy Futures Add-On$5.99
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- ChartBuddy Options Add-On$5.99
- ChartBuddy Core$29.99
- ChartBuddy All Markets$29.99
- ChartBuddy Ultimate$49.99









