Progressive Overload
The whole principle in one sentence: do slightly more than last time. The hard part is knowing when — and that is arithmetic a phone should be doing.
Double progression, decided for you
Every exercise carries a target rep range. You work at a weight until you can complete every set at the top of that range; then the weight goes up and you start again near the bottom. That is double progression, and it is the most reliable scheme there is for anyone who is not a competitive lifter.
Gym Journal reads your logged sets and tells you which move you have earned this session — add reps, or add weight. There is no separate planning step and nothing to tick off.
Increments your gym can actually load
A suggestion to add 2.5 kg is useless in a gym whose smallest plate is 5. Increments are set per exercise, so the app only ever asks for jumps you can build.
On isolation work, where a 5 kg jump can be a 20% increase, it deliberately prioritises reps instead of forcing a load increase you will not recover from. The same applies to bodyweight and timed movements, which progress on reps and duration rather than plates.
What it will not do
It will not push you into a jump your logged sets do not support, and it will not treat one good day as a new baseline. Progression that only moves when the evidence moves is slower on paper and considerably faster over a year.
It’s free, and it’s in the app
439 exercises, 40+ ready-made routines, and unlimited workout logging — no account required to start.
Frequently asked questions
What is progressive overload?
Gradually increasing the demand on a muscle over time — more weight, more reps, or more sets. It is the one non-negotiable requirement for getting stronger; everything else is detail.
How does double progression work?
You work within a rep range, say 8–12. Add reps until you hit the top of the range on every set, then add weight and drop back to the bottom of the range. Gym Journal tracks where you are in that cycle and tells you which move to make.
What if I cannot add 2.5 kg?
Set your increment per exercise to the smallest plate your gym has. On lifts where even that is too big a jump, the app prioritises reps instead of forcing a load increase you cannot recover from.