About
SpotterFuel is an iPhone app for crowded-gym moments: pick the muscle you planned to train, mark busy equipment like benches, cables, racks, machines, or pull-up bars, and get practical same-muscle exercise swaps with sets, reps, equipment, and coaching cues.
It is built for lifters who want to keep the session moving instead of rebuilding a workout when the first station is taken. Free to download, no account required, with a lifetime Pro unlock for the full reroute list.