Same-muscle reroutes
Choose the muscle and exercise you planned, then keep the target muscle when the gym changes the plan.
Gym crowded? Keep training.
Mark what is blocked. SpotterFuel keeps your target muscle and reroutes around what you cannot use right now.
119
exercises
17
muscle groups
16
equipment types
Built for crowded gyms
Stay focused on the muscle. SpotterFuel handles the reroute.
Block what is taken
Mark equipment as unavailable, including benches, barbells, dumbbells, cables, machines, racks, and more.
Built-in exercise library
Browse 119 exercises across 17 muscle groups and 16 equipment types used by the swap engine.
Lifetime Pro unlock
Unlock the full reroute list once for crowded sessions where the first alternative is also unavailable.
Pick the constraint. Keep the intent.
SpotterFuel groups exercises by muscle, equipment, movement pattern, and training intent so a blocked bench does not derail chest work.
- Same target muscle and movement pattern where possible
- Equipment-aware blocking across common gym stations
- Clear sets, reps, equipment, and coaching cues
Bench unavailable
Target: Chest
Do now
Parallel Bar Dip
Chest - Horizontal Push
Private by design.
SpotterFuel stores app settings locally on your iPhone and does not declare collected data in its app privacy manifest.
No account
Use the app without creating a SpotterFuel account.
Local settings
Unavailable equipment and Pro status are saved with on-device app settings.
No tracking
The iOS app does not use tracking for advertising profiles.
Support ready
Public Privacy, Terms, and Support pages are available for customer questions.
Ready before the next crowded set.
Download SpotterFuel on the App Store and keep a backup plan in your pocket.