Crypto Analyzer — Features, Accuracy, and How It Works
A complete breakdown of how our free crypto signal analyzer fetches data, calculates 11 indicators, combines them into a weighted signal, and generates the commentary you see.
What the Tool Does
Our Crypto Signal Analyzer is a free, browser-based tool that fetches real price data for 25 major cryptocurrencies and computes 11 technical indicators in your browser — no server processing, no account required. It then combines those indicators into a single weighted buy/sell/neutral signal with a confidence percentage, and generates a short auto-commentary explaining what the indicators are saying today.
Data Sources
Price and OHLCV (Open/High/Low/Close/Volume) data comes from two sources:
- Binance API (primary): We fetch up to 300 daily candles from the Binance klines endpoint. This provides accurate, high-volume exchange data including base-currency volume.
- CoinGecko API (fallback): If Binance is unavailable (rate limit, outage), we fall back to CoinGecko's OHLC endpoint for price data, plus their market_chart endpoint for USD-denominated volume. Market data (price, market cap, 24h change) always comes from CoinGecko.
Data is cached in your browser's localStorage for up to 6 hours, bucketed into four daily windows. This means the page loads instantly on repeat visits and your requests do not hammer the APIs.
The 11 Indicators and Their Weights
| Indicator | Weight | Buy Condition | Sell Condition |
|---|---|---|---|
| EMA Cross (50/200) | 13% | EMA 50 above EMA 200 | EMA 50 below EMA 200 |
| Support/Resistance | 12% | Price within 3% above support | Price within 3% below resistance |
| RSI (14) | 10% | RSI below 30 | RSI above 70 |
| MACD (12/26/9) | 10% | MACD above signal line | MACD below signal line |
| Bollinger Bands | 10% | %B below 0.2 | %B above 0.8 |
| Stochastic RSI | 9% | K below 20 | K above 80 |
| OBV Trend | 8% | OBV rising with price | OBV diverging down |
| Fear & Greed | 8% | Index below 25 | Index above 75 |
| Volume | 7% | Spike on up-day (>1.5×) | Spike on down-day (>1.5×) |
| Rate of Change | 7% | ROC above +5% | ROC below −5% |
| CCI (20) | 6% | CCI below −100 | CCI above +100 |
How the Combined Signal Is Calculated
Each indicator returns one of three values: buy (+1), sell (−1), or neutral (0). These are multiplied by the indicator's weight and summed to produce a score between −1 and +1:
- Score > +0.1 → BUY
- Score between −0.1 and +0.1 → NEUTRAL
- Score < −0.1 → SELL
Confidence is computed from the absolute value of the score — a score of +0.5 (half of maximum possible buy) maps to roughly 75% confidence. A score of +0.12 maps to a low-confidence buy (~35%).
The Auto-Generated Commentary
The "Technical Analysis Today" section below the signal cards is generated algorithmically from the live indicator values. It produces 5 sentences covering:
- The overall signal and confidence
- RSI reading and what it means
- MACD and EMA cross alignment
- Volume / Bollinger Bands context
- Fear & Greed sentiment interpretation
The commentary uses the actual computed indicator values — it is not pre-written text. Every sentence changes as the underlying indicator values change.
Supported Coins
The tool currently supports 25 major cryptocurrencies: BTC, ETH, XRP, BNB, SOL, TRX, DOGE, ADA, HBAR, AVAX, LINK, SUI, SHIB, DOT, LTC, BCH, NEAR, APT, UNI, OP, ATOM, ARB, ICP, VET, and POL. Each has its own dedicated analysis page at /tools/crypto-analyzer/[coin-name].
Accuracy and Limitations
Technical analysis is probabilistic, not deterministic. Our tool does not claim to predict prices — it identifies conditions that have historically been associated with higher or lower probabilities of certain price movements.
- It does not account for fundamentals, news, or regulatory events
- Weights are fixed and not adaptive to current market regime
- Daily signals are more reliable than they would be on shorter timeframes
- All calculations run in your browser — no data is sent to our servers
Try the Free Crypto Analyzer Now
No signup. No account. 25 coins. 11 indicators. One combined signal. Fully free.
Open Free Crypto Analyzer →