Afterglowscreensavers

Altcoin Season Index Screensaver

The Altcoin Season Index screensaver computes a live index from real top-coin price performance, showing what share of major altcoins are currently outperforming Bitcoin — drawn key-less from CoinGecko. It's free, runs in your browser, and ESC exits.

Live preview

Press ESC to leave fullscreen. Settings are saved in your browser only.

How the Altcoin Season Index screensaver works

The saver fetches real recent price performance for the top coins by market cap from CoinGecko, with no key required.

Each coin's real 90-day performance is compared against Bitcoin's own.

The index shows what percentage of coins are genuinely beating Bitcoin right now.

A gauge reads from "Bitcoin season" to "Altcoin season" based on that real percentage.

A worked example

When the index reads high, most tracked coins have real recent gains outpacing Bitcoin's own — a genuine "altcoin season" reading, not a fixed label.

Settings & tips

Frequently asked questions

How is the index computed?
By comparing real 90-day price performance of top coins against Bitcoin's own, then measuring what share are ahead.
Is a key needed?
No. CoinGecko's public API is free and key-less.
Is this official?
It's an independent computation using real market data, following the same widely used community methodology.
Is it free?
Yes — free, no download, in your browser.

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