Signal Jam

Signal Jam is a one-finger timing game. A needle sweeps around a dial and a band lights up on the ring. Tap while the needle is inside the band to score. Tap too early, or let the needle pass the band, and the run ends on the spot. There is no continue, no revive, no shield and no free tap. Every run ends on your first mistake, so every hit is one you earned. The difficulty comes from a curve with a fairness floor. The dial speeds up and the band narrows as your score climbs, but past thirty hits it stops tightening and holds steady. A timing game that accelerates forever stops testing skill and starts testing luck. The band is also never narrower than a person can react to: however tight the curve gets, the needle always spends a fixed slice of time inside the target. Land near the centre of the band and the hit counts as a perfect. Unbroken streaks build the streak counter. From deeper in the run, the dial starts reversing direction without warning, so the sweep you were reading suddenly runs the other way. - One tap, portrait, one-handed - A difficulty curve with a hard fairness floor, so it never becomes impossible - Perfect hits for centre-of-band precision, and a streak counter that one bad tap resets - Direction reversals that start only once you are deeper into the run - A Reduce Motion toggle that removes the pulse and glow effects - Local best score and lifetime stats, no account - Fully offline Signal Jam is bought once for USD 1.99 and that is the whole transaction. No ads. No in-app purchases. No subscriptions. No timers, energy meters or wait-to-play. No account, no sign-in, no tracking, no analytics, no data collection, and no network calls at all.