An unbounded momentum oscillator developed by Constance Brown that embeds an RSI rate-of-change term inside the RSI formula and removes the 0--100 bounds, allowing it to continue making new highs (or lows) when RSI saturates above 70 or below 30. It is designed to detect divergences at Wave 3 and Wave 5 extremes that RSI alone misses because RSI flatlines at the boundary.