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The numbers behind a day in the mountains
Seven tools we use with our own clients. Every one of them shows its working and says where it stops being reliable — because a number you cannot argue with is a number you cannot train from.
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Trek readiness
The question people actually arrive with is “could I do this?” — and no general fitness calculator answers it. This one compares five trainable capacities against what your objective demands, names the single biggest gap, and tells you how many weeks it takes to close.
Check your readinessFor the mountains
Built for the days these actually get used on — a trek you are training for, a route you are timing.
Trek readiness
What the trek asks against what you are doing now — the gap, named, and the weeks to close it.
Hike time
Naismith's rule, corrected for descent, pack and the stops nobody plans for.
For training
The everyday numbers, done properly rather than done fast.
Heart-rate training zones
Five zones from your own resting rate, not a formula that ignores your fitness.
Daily energy and protein
What a day actually costs you, and how much protein supports the training on top.
Body composition
Body fat from a tape measure, and the fat-free mass index that actually tracks your training.
One-rep max
Your working maximum as a range, from two formulas that disagree — plus the percentages to train off.
Interval timer
Tabata, EMOM, hill repeats — with sound, a wake lock, and a clock that stays right in your pocket.
Interval timer
Set it once and use it on the mat or the hill. It keeps the screen awake, counts you in, and stays accurate if the phone goes in a pocket mid-round.
Get ready round 1 of 8
0:10
Presets
Or set your own
Total session 7:50. The screen is kept awake while it runs where the browser allows it, and the countdown stays correct if you pocket the phone.
None of this replaces a plan
A calculator tells you where you are. What changes anything is the week that comes after it — and the first conversation about that is free and takes half an hour.
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