Frequently Asked Questions

Where does your data come from?

Market data comes from CoinGecko: live prices, OHLCV candles, and price and volume history across the 7, 30, 90, and 365 day windows. On top of that we read global market metrics, the crypto fear and greed index, on-chain top-holder concentration, protocol fundamentals from DefiLlama, and social sentiment from CryptoCompare.

That is the whole list. We do not follow individual wallets, and we do not track perpetual funding. Every read is built from public market and on-chain data you could look up yourself, assembled in one place so the exit plan you write has something solid under it.

Why don’t your numbers match CoinMarketCap or TradingView?

Different platforms calculate metrics like total market cap, trading volume, and sentiment indexes using different methodologies. Each provider tracks a different set of exchanges, applies different wash-trading filters, and verifies circulating supply independently.

For example, one provider may aggregate data from 1,600+ exchanges while another uses 790+. They also differ in how they handle wrapped tokens, bridged assets, and low-liquidity pairs. These differences are normal across the industry and don’t indicate errors.

How often is data updated?

Market data refreshes every 15 to 30 seconds. Sentiment indicators like the fear and greed index update every few minutes. Longer-term data like historical price ranges and on-chain holder concentration updates less frequently, since it changes more slowly.

The “As of” timestamp on the dashboard shows when data was last fetched.

Why does your Fear & Greed index differ from other sites?

There are several crypto fear and greed indexes, and each uses different inputs and weightings. Some focus exclusively on Bitcoin, while others analyze the top 10 to 20 cryptocurrencies. Some use historical volatility (backward-looking), while others use implied volatility from options markets (forward-looking).

Other differentiators include social media sentiment analysis, Google Trends data, stablecoin supply ratios, and derivatives market put/call ratios. A gap of 10 to 15 points between providers on the same day is completely normal.

How are exit plans generated?

You name a coin and your position. SellSignal assembles the data above into a dossier, hands it to a frontier language model, and asks for a plan: prices at which you would take profit, a level at which you would call the trade done, and how much of the position to move at each step.

Every target comes back with the evidence and the reasoning that produced it, so you can argue with the plan before you accept it. Until you commit, it is only a draft. Once you commit, the daily check measures the market against your rules and pings you when one is hit.

How are support levels and price targets worked out?

The model reads price action across the 7, 30, 90, and 365 day windows, the OHLCV candles underneath them, and how volume behaved at each level, then names the prices that have actually mattered for that coin.

These are readings, not the output of one technical formula, and not forecasts. They exist to give your exit plan concrete numbers, because a number you committed to in advance is the part that changes what you do when the price moves.

How accurate is the analysis?

We do not hide the misses.

Nothing here is a prediction, and no read is right every time. Crypto moves on events that are in nobody’s data. SellSignal is decision support, and the product is not the call: it is the plan you set while you were calm, and the daily check that stops you from quietly walking away from it.

What model writes the analysis?

A frontier large language model, given the data described above and a structured prompt. It returns scored, evidence-backed reads, each with a confidence figure it reports for itself: how complete the data was, and how well the separate readings agreed. That figure is the model’s own certainty about the read in front of it, not a claim about how often it turns out to be right.

Research is the arm, not the product. What you keep is the plan you committed to and the record of how you responded when it was tested.

What’s the difference between Free and Pro?

Free accounts cover the whole daily check: track up to 3 positions, build exit plans, and keep up to 3 active commitments that SellSignal checks every day. You also get 3 analyses per day for health checks and market briefs.

Pro is $12/month and removes the limits: unlimited positions and commitments, 100 analyses per day, Telegram decision pings, a weekly briefing, and full analysis history. See our Pricing page for a full comparison.

What is a “health check” vs an “exit plan”?

A health check is a read on a coin’s current condition, scored across momentum, volume, sentiment, technical levels, and risk. Think of it as a checkup for a position you already hold.

An exit plan goes further: prices for taking profit, a level for cutting the loss, and how much to move at each step. It is the thing you commit to, and the thing the daily check holds you to.

What is the Gem Finder?

The Gem Finder scans the top 1,000 coins by market cap, filters out stablecoins and wrapped tokens, then scores each coin across multiple signals including momentum, sentiment, and market positioning. It surfaces coins that may be undervalued or showing early signs of strength.

How do I upgrade to Pro?

Visit the Pricing page or click “Upgrade” in your Settings. Payment is processed securely through Stripe, and Pro is billed monthly at $12. You can cancel anytime from Settings.

Can I cancel anytime?

Yes. You can cancel your Pro subscription at any time from Settings → Manage Subscription. You’ll retain Pro access through the end of your current billing period.

How do I delete my account and data?

You can export your data (GDPR compliance) and request account deletion from the Settings page. We will delete all your personal data and analysis history within 30 days of your request.

Is SellSignal financial advice?

No. SellSignal is an informational tool for educational purposes only. We are not registered investment advisors, brokers, or financial planners. Every analysis is decision support, not a recommendation to buy, sell, or hold any asset.

Always do your own research and consult a qualified financial advisor before making investment decisions.

What coins do you support?

You can analyze any cryptocurrency that has market data available, currently over 17,000 coins. Simply type a coin name or ticker in the search bar to get started.

Do you have a mobile app?

Not yet, but SellSignal is fully responsive and works great on mobile browsers. A native app may come in the future.