Altcoin Season Index Widget
Answer the question every crypto trader asks: is it altseason? The Altcoin Season Index scores the market from 0 to 100 by how many of the top altcoins are outperforming Bitcoin over the chosen timeframe — high means the alts are running, low means Bitcoin rules. It shows on a Bitcoin-to-Altcoin gauge with a plain verdict, a six-month history chart, and a grid of coins coloured by whether each is beating BTC. Live data from Vunelix, embeddable with no signup and no API key.
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The top section — the season gauge with the score and verdict, the stat cards, and the timeframe tabs.
The timeline chart plotting the Altcoin Season Index over the past six months.
The grid of coins showing each one's performance versus Bitcoin (green = beating BTC).
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Color for positive values (gains, up arrows).
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Altseason or Bitcoin Season?
The index turns a vague feeling into one number. It measures how many of the leading altcoins have outperformed Bitcoin over the window, and maps that onto a 0–100 scale — toward 100 the alts are winning (altcoin season), toward 0 Bitcoin is leading. The gauge names the verdict so a reader gets the answer instantly, without doing the maths.
Track the Trend
A single reading is a snapshot; the history chart is the story. It plots the index over the past six months so a reader sees whether altseason is building or fading — the shift between BTC-led and alt-led markets, drawn as one line.
Coin by Coin vs Bitcoin
Under the gauge, a grid shows each top altcoin's performance against Bitcoin over the same window — green where it is beating BTC, red where it is behind. It turns the headline score into the names actually driving it.
Key Features
- 0–100 season gauge — Bitcoin Season to Altcoin Season, with a verdict.
- Built from real performance — how many top alts are beating BTC.
- Selectable timeframe — the window the index is measured over.
- Six-month history chart — see the trend, not just today.
- Coin grid vs BTC — green for beating Bitcoin, red for behind.
- Configurable — hide the chart or grid to keep just the gauge.
- Light and dark themes — follows the host page automatically.
- Free to embed — no signup, no API key, no monthly fees.
Built for Crypto Sites
Crypto projects and traders use it to time the rotation from Bitcoin into alts; news sites embed it beside market coverage. For overall mood, pair it with the Fear & Greed Index; for BTC's share of the market, the Bitcoin dominance widget.
Who Uses This Widget?
Crypto exchanges and portfolio trackers feature it on dashboards. Trading blogs and signal services put it at the top of altcoin coverage. Research sites embed it as a market-rotation gauge visitors return to.