Where does CoinNotch get its price data?
CoinNotch pulls prices from an established crypto market-data feed that aggregates across exchanges and covers hundreds of coins. It fetches the current price for each coin you pin and shows it in the menu bar. Because different sources aggregate slightly differently, a price may vary by a tiny amount from another app or exchange, which is normal.
CoinNotch gets its prices from an established crypto market-data feed, the kind that aggregates trading activity across many exchanges into a representative price for each coin. It covers hundreds of assets, which is how CoinNotch can show such a wide range. For each coin you pin, the app fetches the current price from that feed and displays it, refreshing about once a second.
Why prices vary slightly between sources
You may notice a coin's price differs by a tiny amount between CoinNotch and another app or a specific exchange. This is normal and expected. Crypto trades on many venues at once, each with slightly different prices, so any data source has to aggregate them into one number, and different sources weight and average that differently. The gaps are usually fractions of a percent and reflect how aggregation works, not an error in either source.
What matters for a glance-first ticker is that the price is accurate and current to within that normal range, which it is. If a price ever looks frozen rather than slightly different, that points to a connection issue instead, covered in the troubleshooting guide.