Progressive overload is the single most important variable in strength training. Iron Log is built around it — not as a feature tag, but as the core of how logging works. Every session shows you exactly what you did last time and makes it easy to beat it.
When you start a session, every working set from your previous session pre-fills as a ghost set — dimmed, waiting for you to confirm or improve. This isn't a suggestion feature: it's the default logging flow.
Iron Log tracks two PR types per exercise: heaviest single weight lifted (strength PR) and highest single-set volume in kg (volume PR). A snapshot of your all-time bests is taken at session start so every confirmation check is instant — no lag, no waiting.
PRs are tagged directly on the set row the moment you confirm. You see your progress in real time, not in a summary screen afterwards.
The deep stats panel shows 7-day volume for every muscle group you've trained, with a week-over-week percentage delta. Volume is split across primary and secondary muscles — a Bench Press session counts 70% toward Chest and 30% toward Triceps, so your volume picture is accurate rather than exercise-count based.
Confidence indicators show whether a trend is based on enough data to be meaningful. Low confidence means the number is real but early — keep training and it will stabilise.
Download Iron Log on Google Play — no sign-up required.
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