Periodized S&C across strength, endurance, and conditioning — built for your goals, adapted to your readiness, reprioritized when life intervenes. Show up and execute. The programming is handled.
Free during early access. We'll notify you at launch.
Kiln builds your training plan the way an elite S&C coach would — assessing your goals, identifying limiters, programming concurrent development across domains, and adjusting every week based on how you are actually recovering. Except it costs less than one session with a real S&C coach.
Kiln builds multi-week training blocks with planned progression, intentional loading, and phase-appropriate volume. Strength and endurance develop concurrently — not bolted together from two separate apps. Every session has a purpose. Every week has priorities: must, should, optional.
Slept four hours. Traveled all week. Knee is bothering you. Kiln checks your readiness before every session and adapts: reduced volume, swapped exercises, rescheduled priorities. On the worst days, it prescribes minimum dose sessions — just enough stimulus to protect your progress without digging a recovery hole.
Training for a Hyrox and want to keep your squat moving? Preparing for a ruck event while building a 5K base? Kiln programs the intersection — balancing competing demands, managing fatigue across domains, and sequencing sessions so Monday's deadlifts don't destroy Wednesday's tempo run.
What are you training for? A military fitness test. A Hyrox race. General strength and conditioning. Getting back to training after a long break. Kiln profiles your goal, your schedule, your equipment — whether that is a full rack, a hotel gym, or a pair of kettlebells — and your training history. Two minutes. No quizzes. No 40-question intake.
Kiln builds a multi-week training block — not a list of random workouts. Each session is programmed with specific intent, load progression, and exercise selection matched to your equipment and training age. The plan is yours. Every session tells you what to do, why, and what to prioritize if time is short.
Open the app. See today's session. Train. Log your sets. Kiln tracks your progression, detects stalls, and adjusts future sessions based on what actually happened — not what was supposed to happen. Miss a session? The week reprioritizes. Feeling wrecked? Check in and get a minimum dose day. Win the week.
Most "AI training apps" paste your goal into a language model and call the output a workout plan. That is a prompt, not a program.
Kiln is a deterministic coaching engine — 700+ unit-tested rules governing periodization, load progression, stall detection, readiness gating, and exercise selection. The engine handles the science. AI handles the language layer: choosing exercises, writing cues, rendering sessions that read like a human coach wrote them.
The difference matters. A prompt gives you a new random workout every day. An engine gives you a program that progresses, adapts, and remembers what you did last week.
Kiln is not for everyone. It is for people who already take training seriously and are frustrated with the gap between what they know good programming looks like and what they are actually doing.
Now you are programming for yourself and it shows. Training is inconsistent, underprogrammed, or improvised. You know what periodization is. You just don't have the time or energy to do it for yourself every 4-6 weeks.
Active duty. Law enforcement. Fire. EMS. You train for your life, not just your health. You need programming that accounts for occupational stress, fitness test standards, and the fact that you rucked 12 miles yesterday and still have a session today.
Hyrox. A ruck race plus a half marathon. Powerlifting meets plus conditioning. You have tried piecing together a running plan and a lifting plan and they always conflict. Nobody programs the intersection. Kiln does.
From injury. From a layoff. From a deployment. From having a kid. You know you used to be fit. You need a program that meets you where you are today — not where you were two years ago, and not where a beginner program assumes you are.
If this sounds like you, you do not need motivation. You need a plan that works and adapts when your week does not go as planned.
The engine handles the plan. You handle the work.
Free during early access. No credit card ever needed.