Most workout apps increase weight on a schedule. Add 5 pounds every week. Increase after every session. Hope your body keeps up.
MoveIron takes a different approach.
The system watches your performance and adjusts based on evidence — not assumptions.
Every movement runs on a rolling session cycle. Each phase has a different rep target — and only one phase is where weight can actually change.
Phases 1 and 2 are intentionally hold phases. Weight stays constant as long as you're hitting reps — with one exception: if any set falls below the minimum, weight still drops. Outside of that, these phases are lighter by design, giving joints, connective tissue, and the nervous system time to recover.
The cycle acts like a built-in autoregulation system. You never have to decide when to back off. It happens automatically.
Weight increases happen through double progression. You must hit every prescribed rep in every set before weight goes up.
The threshold differs by lift type:
These guardrails exist to keep progression sustainable over months, not just weeks.
If any set falls below the minimum rep target, the system automatically reduces the load by 5%.
Lower slightly, rebuild clean reps, and progress again. There's no debate, no override. The data decides.
This prevents the common mistake of staying at a weight you can't actually handle — accumulating poor reps, grinding form into the ground, and eventually stalling anyway.
Compound and secondary lifts accumulate fatigue over time. Progress doesn't always look like improvement — sometimes it looks like staying the same for too long.
MoveIron tracks stalls automatically. A stall is when your Phase 3 performance fails to improve compared to the previous Phase 3 — total reps didn't increase, and no additional sets reached the top of the range. If the weight changed between sessions, the comparison resets automatically.
After any recovery week expires, the lift returns to the previous working weight — not the reduced weight. The deload is about shedding fatigue, not setting you back.
If deloads keep repeating on the same lift, the system automatically reduces the increment — halving it after every two consecutive recoveries, down to a minimum of 1.25 kg. Progress continues, just at a pace the body can actually absorb.
Accessory and isolation lifts do not trigger deloads. They don't accumulate the same kind of systemic fatigue. If they stall, they simply hold until the next session.
Behind every exercise, the system maintains a full picture of your history and state — none of which you ever need to think about.
Users never see these numbers. They simply see the prescribed weight and whether the lift is ready to progress — along with a badge explaining the current status.
MoveIron exists to enforce this discipline automatically — so you never have to guess.