Engine-building coach
Build your engine. Every session adapts to your results.
Coaching in WhatsApp or Telegram for your Concept2 Rower, SkiErg or BikeErg, air bike or Wattbike. Reply with your numbers after each session. Workout 1 free. £29 once for your first block. Then from £24.99 a month.
- No new app, no login
- Setup takes two minutes
- Sessions from 6 minutes of work
Done. 7377m, 2:02, rate 20, RPE 4
Engine work that fits around your main sport
MaxCals is an accessory programme for people whose main training is another sport. Each session is 6 to 30 minutes of work, and you do as many a week as fits around your life (we suggest 2 to 5).
Hyrox athletes
Build a bigger engine for race day on the SkiErg and rower you race on.
MaxCals is an independent coaching service. Not affiliated with or endorsed by HYROX.
See the HYROX trackCrossFit and functional fitness
Stop gassing out in metcons, with air bike and rower formats you know.
Team, field and combat sports
Engine work that sits around your training and matches.
Runners, cyclists and triathletes
Low-impact engine work indoors, alongside your main training.
Home machine, limited time
Got a Concept2, air bike or Wattbike and not much time? Sessions start at 6 minutes of work.
MaxCals doesn't programme your running, sled, strength or skills work. It builds your engine on an indoor machine alongside it.
Athletes
What athletes say
Sessions written by an international-level Kettlebell Sport athlete with multiple coaching qualifications. Athlete-to-athlete, not corporate.
“I've been coached by David for years, and this app perfectly translates his programming into a digital format. It constantly adapts to push your limits safely. My endurance has never been better, and it feels just like having his expertise driving my daily workouts.”
“Instead of just guessing what to do on the cardio machines, this gives me the exact targets I need to progress. My cardiovascular fitness is through the roof.”
“I don't understand complicated fitness trackers. With this, I just use my phone camera to send a picture of the stationary bike screen to a chat. It records everything for me and adjusts my routine for next time.”
“Taking a picture of the rowing machine screen is foolproof. The service reads the numbers and adapts my future workouts based on how I did. Having it right in my WhatsApp makes it impossible to ignore.”
Athletes' own words, shared with their consent. Individual results vary.
01How it works
How it works
Message MaxCals and set up in two minutes
Message MaxCals on WhatsApp, or @MaxCalsBot on Telegram. Both are free on iOS and Android, and there is no other app or account to set up. Tell it your name, your machine and your current level, read how your data is used, and reply YES. Then answer a short health check: seven yes/no questions from the PAR-Q+.
Do the session, reply with your numbers
Workout 1 is free. Your session arrives in the chat: the structure, the effort and which numbers to send back. Type what your monitor shows: time, distance, split, watts or calories, the way you'd tell a training partner. Or send a photo of the monitor and the bot reads the numbers for you. The one-off £29 Athlete Assessment then unlocks the rest of your first block.
The next session adapts, and the block ends in four tests
Your result is compared with your earlier sessions of the same type, and the next one adapts. If the main-set volume changes, the workout tells you by how much. Your first block ends with four tests and a score card. Then you choose your next focus and block length, and each block ends by testing it, plus your 10- and 30-minute benchmarks.
02Plans
Pricing
Workout 1 is free. Then £29 once for your first 6-week block. After that your plan starts, from £24.99 a month. We remind you before every payment.
Included in every plan
Every plan starts the same way. Workout 1 is free. After it you pay the one-off £29 Athlete Assessment, which unlocks workouts 2 to 21 and saves your card. Your plan then starts automatically when you reach session 22, at the rate shown on the card you picked. We remind you by message and email 7 days before every payment. You can cancel within 14 days for a full refund, unless you ask us to start your coaching straight away. Once your next session is sent, the £29 is non-refundable.
Monthly
£29 once after your free Workout 1. Then:
£24.99 per month
a month. No commitment. Cancel any time.
- No commitment: cancel any time
- Gets cheaper automatically: £22.49 from month 4, £19.99 from month 7, £16.99 from month 13
6-Month Block
£29 once after your free Workout 1. Then:
£119.94 per 6 months
every 6 months, equal to £19.99 a month. Renews at £119.94 unless you cancel.
- 20% off the full monthly rate: £30 saved every 6 months
- Renews at £119.94 every 6 months; cancel any time
Annual
£29 once after your free Workout 1. Then:
£199.92 per year
a year, equal to £16.66 a month. Renews at £143.88 a year from year two.
- 33% off the full monthly rate: £99.96 saved in year one
- Then £143.88 a year (£11.99/mo) from year two, earned by completing year one
Monthly gets cheaper the longer you stay: automatic, no code needed
- £24.99 a month
Months 1–3
Full price
- £22.49 a month
Months 4–6
10% off
- £19.99 a month
Months 7–12
20% off
- £16.99 a month
Month 13+
Lowest rate, while you stay subscribed
Annual renewal reward
£11.99 a month
£143.88 a year (£11.99/mo equivalent), billed yearly from your second year. Earned by completing year one; not available at signup.
03FAQ
Frequently asked questions
Go deeper
More on how it works
- The coaching in detailFrom your first session to your score card: what arrives in the chat, how your results are read and what changes.
- Test your engineYour first block ends with four tests, one for each part of your engine.
- Turn a split into wattsType a pace, watts or calories from one machine and see what it equals on the others.
- Learn the engineSourced explainers and the library of every MaxCals post.
Your first session is free
Message MaxCals on WhatsApp, or @MaxCalsBot on Telegram. Setup takes two minutes. Workout 1 is free. Then £29 once for your first 6-week block. After that your plan starts, from £24.99 a month. We remind you before every payment.
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