Select what genuinely interests you. Your picks feed directly into our editorial planning. Crypto Bubbles is a free website and app that displays the crypto market as a field of coloured bubbles. Each bubble represents a coin; by default its size shows how much the price has moved over the selected period, and its colour shows the direction: green for gains, red for losses. That lets you see in seconds which coins are standing out. What the map does not show is whether a coin is good, large or cheap. This is precisely where most misunderstandings arise.