Kettle is a training app you talk to. Tell Lucia what you just did — "bench, 100 kilos, eight reps" — and it's logged. She keeps your history, watches your volume, calls your personal bests, and reshapes your plan around the sessions you actually trained. No forms. No spreadsheets. No guessing what to do next.
Most training apps make you their data-entry clerk. Kettle flips it: you talk, and the record keeps itself.
Type it or say it out loud, the way you'd tell a training partner. Lucia understands sets, weights, reps, drop sets and rest — in plain English, in your units.
"Squats — 5 sets of 5 at 120, last one felt heavy."Every set lands in your history the moment you say it. Volume, streaks, personal records and your muscle heatmap all update themselves — nothing to reconcile later.
"Logged. That's 2,400kg on legs this week — up 9% on last."Lucia reviews your programme against what you actually trained, then proposes the changes in writing. You accept them, or you don't. One tap either way.
"Your pull volume is lagging. Add a row to Upper B?"Lucia has real access to your training data and can change it — the same buttons you have, driven by conversation. Here's what she can actually do.
Starts your workout, adds exercises on the fly, logs and corrects sets mid-flow, times your rest, and closes the session out when you're done.
Ask what you benched in April, or how your squat has moved this quarter. She reads the same log you do — every session, every set, since day one.
Multi-week plans she creates, renames, reorders and rebalances on request. Or start from one of 30 ready-made plans and let her tailor it to you.
Heaviest set, most reps at a weight, best estimated one-rep max. Called out the second it happens — not buried in a monthly summary you'll never open.
Weekly tonnage per muscle group and how it's trending, plus a heatmap of what you've overcooked and what you've quietly been avoiding for a month.
Call Lucia and work through the session hands-free — useful when your hands are chalked, your phone's on the floor and you're three sets deep.
ProEverything Lucia does, you can do by hand. The conversation is an option, never a requirement.
Over, optimal, under — at a glance
Every lift, every milestone
Session by session, week by week
Cues, muscles worked, your history
Live rest countdown, no unlocking
Log the set from your wrist
Ask a general-purpose AI about protein and you get a confident average of the internet. Ask Lucia and you get a reviewed answer with the papers attached — 104 of them, across 12 areas of training, nutrition and recovery. Each one is dated, sourced, and honest about where the evidence runs out.
Training frequency, effective volume, proximity to failure, and how much of "more is better" the evidence actually supports.
Protein targets, deficit sizing, nutrient timing, and which of the timing rules survive contact with a controlled trial.
Periodisation, progressive overload that actually progresses, and how to structure a week you'll still be running in March.
Soreness versus damage, when a deload earns its place, and sleep's measured effect on adaptation and injury risk.
Pregnancy and postpartum, masters athletes, and training around a body that has its own constraints.
The interference effect, which supplements have evidence behind them, and when a niggle means see a physio, not push through.
"Aim for about 1.6–2.2 g per kg of body weight per day, split across 3–5 meals. Morton's 2018 meta-analysis in the British Journal of Sports Medicine found a plateau near 1.62 g/kg — beyond that, extra protein gave no measurable extra gain."
Attached to it: the paper, the ISSN position stand, the review date — and the caveat that most of this literature studied young, mostly male adults over 6–16 weeks. Lucia tells you that part too.
I lose interest in the other apps where you have to keep manually adding your sets. I can just type my workouts in as I'm going along and the AI tracks everything for me and presents it nicely! Way faster workflow!
After a busy day the last thing you want to have to do is try and plan your workout. This app not only takes the decision burden out the way but is able to tailor workouts to your exact needs and goals. Highly recommend.
Unlike other tracking apps I've used, the AI chat feature helps me ask questions during my workout and it actually links the science research papers at the same time.
It's simple to use and the AI feature helps a lot to get things done. I can add workouts easily.
Such an easy app to use and love the chat functionality. Been using it for a while and it's making my workout so much more efficient.
It's a very good app to track your workout, and the AI system assists with making planning your workouts while providing valuable information when needed.
The tracker, the exercise library, your history and the research answers cost nothing. You only pay when you want Lucia running the programme itself.
Chat with Lucia and explore your training.
No card, no trial countdown.
Let Lucia manage your training for you.
Monthly or annual, cancel any time.
Talk it out — voice calls with Lucia.
Current prices are shown in the app.
Download Kettle, tell Lucia what you're training today, and let the record keep itself.