Kronos

Kronos is a workout app and interval timer. Connect it to Claude and your chat becomes your coach, while Kronos does the training.

Ask for a workout, a timer or a multi-week plan, and it lands in the Kronos app ready to run, with a timer for every set and rest, your weights, and logging. You see a preview in the chat before anything is saved.

What you can do:

• Create workouts and interval timers, and send them to your phone.
• Build multi-week plans with progression. Plans arrive as a draft you review and start in the app.
• Change this week or next week of your plan: swap one move, change sets, reps or weight, skip or replace a session, move days or add a session. Only what you ask changes.
• Change a saved workout the same way. It is saved as a new workout and yours stays as it was.
• Add weeks to the end of the plan you are running.
• Let Claude read your equipment, your schedule, your plan, your saved workouts and your training history, so what it writes fits you.
• Ask how one exercise has gone over time, or tell Claude how a session went. It can read what you did and plan the next one.
• For coaches: send a plan to a client who linked you, with the rules you want kept, see what you sent, and read the training a client chooses to share with your AI.
• Send feedback to the Kronos team from the chat.

You stay in control. You approve the connection in the Kronos app and choose what Claude may do. Changes to your plan are previewed first, and nothing starts by itself. Heart rate, notes, feelings and injuries are never shared. Disconnect at any time from Connected AI in Kronos.

Timers run free on every Kronos account, and your first AI workout is free. Plans, plan changes and training history need Kronos Pro or the free trial.