Training that someone actually guides
MO is the app of medical trainer Mateusz Ołtarzewski. A plan built around your health and goal, technique for every exercise on video, progress and constant contact with your trainer in one place.
Coming soon to the App Store and Google Play. Works in your phone browser today.
For whom
I work with people who want to train smart, not just hard.
Body shape
Fat loss, muscle building, recomposition and better body proportions.
Health and injury recovery
Back, knee or shoulder pain, weak areas, injury prevention and better movement quality.
Pregnancy and postpartum
Safe training matched to the stage of pregnancy, the postpartum period and how you feel.
First steps at the gym
Learning technique from scratch, at a calm pace and without pressure. Also after 60.
MO in 35 seconds
From today's plan, through sets and rest, to progress and a chat with your trainer. This is an ordinary day with the app.
How we start
Talk and assessment
Interview, goals, health and an initial functional assessment. I create your account in the app.
Plan
I build workouts for you. You see them in the app with weights, sets and rest times.
Training and contact
You train with me or on your own. You log your sets, and I see your progress and answer questions.
See the app
Real screens, sample data. The app is in Polish for now.
Home
Today's plan, readiness, appointments and weekly goal on one screen.
Workout
Sets, weight and a rest countdown. The app suggests when to add weight.
MO Atlas
Over 1,900 exercises with technique videos and the muscles they work.
Progress
Workouts, volume and records compared with the previous month.
Contact with your trainer
A question after training or a pain report goes straight to the trainer.
Appointments and package
Upcoming sessions, cancellations and package status at a glance.
Mateusz Ołtarzewski
Medical trainer, pregnancy and postpartum trainer
For over 6 years I have run strength training tailored to health and ability: from first steps at the gym, through body shape and strength, to returning to form after injury and training during pregnancy.
MO was created so that nothing gets lost between sessions: not the plan, not your progress, not your questions.
Education and experience
- Over 6 years of work as a trainer
- Postgraduate studies “Physiotherapy in Sport – Medical Trainer”, Warsaw Medical Academy
- Bachelor's degree in Physical Education, University of Education in Sport, Sports Management specialisation
- Courses in strength training, movement assessment and training planning
Where we train
Warsaw, Bemowo district. We agree on the exact place during our first conversation.
What clients say
I can wholeheartedly recommend Mateusz Ołtarzewski as a personal trainer. He is by far the best trainer I have worked with — I work with trainers every day, so I really know how much depends on approach, knowledge and commitment.
Getting back in shape under Mateusz Ołtarzewski's guidance was the best decision. Training tailored to my abilities, everything under the trainer's watchful eye. Every session showed results. Mateusz knows a lot, explains patiently and answers questions.
I warmly recommend Mateusz Ołtarzewski. We have been working together for several years and I can only speak about it in superlatives. His openness to individual needs and circumstances is a huge strength. He is also very friendly and committed.
Show all reviews (18)
5 stars for training with the best trainer – Mateusz Ołtarzewski. Thanks to individually chosen strength exercises I got rid of the knee pain I had every day. Training with Mateusz is truly stress-free: a friendly atmosphere, great patience, effective training and the ability to listen to and understand the client's needs.
The sessions are great and the trainer is very flexible with time. Mateusz knows a lot, tailors training to each person and knows how to adjust it when you have an injury or a weaker day. And most importantly, you see the results.
I highly recommend working with Mateusz – for anyone hesitant to start at the gym, as well as those who want to improve their skills. He is polite, kind and competent, with deep knowledge in many areas (such as training during pregnancy).
I recommend sessions with personal trainer Mateusz. After a few workouts I forgot what back pain was. A professional, individual approach. Recommended.
I recommend personal training with Mateusz Ołtarzewski. Working with him I saw a clear improvement in my figure and fitness. Mateusz pays close attention to technique, which makes the training safe and effective.
Great personal training tailored to the person. The atmosphere motivates me to be consistent. I have been training with Mateusz for 1.5 years and I am still very happy with his commitment and the way he motivates me.
I recommend training with Mateusz Ołtarzewski to people who are unsure whether to start going to the gym at all, and to everyone who already trains regularly and wants to make sure they do the exercises correctly or needs more variety.
I recommend personal trainer Mateusz with full conviction. He is professional, committed and perfectly tailors the training plan to individual needs and abilities.
I was not convinced that individual training was right for someone my age (65+). Encouraged by my daughter and a trial session, I came under Mateusz Ołtarzewski's care. He first assessed my posture and muscle strength, then asked about my activity and plans. I saw the effects of our two months of work during a June stay in the mountains: no knee pain when walking downhill, which used to bother me, and no muscle fatigue after full days of hiking. Thank you, I recommend him!
I especially recommend Mateusz, who has been training me for over a year!
I come here mainly for personal training with Mateusz, who always knows how to motivate me. I value his vast knowledge and professionalism. If you are looking for a competent trainer you feel comfortable with, to get in or back in shape, he is the best choice ;)
I recommend Mateusz :) A dozen or so sessions with him did the job :)
I recommend personal trainer Mateusz Ołtarzewski with a clear conscience. Sessions were always well run, in a relaxed and fun atmosphere. Everything was tailored to my abilities, and at the same time I felt motivated to give more. Definitely recommended!
I recommend the best personal trainer ever – Mateusz Ołtarzewski!
Hi Coach! Reporting that the baby is already with us. I wanted to thank you for all our sessions. I am sure the fitness we built helped me a lot during pregnancy and birth. Thank you for the motivation and support! As soon as I recover and get organised, we are definitely coming back! Warm regards
Training packages
Packages and prices will appear here soon. Until then, write to me and I will prepare an offer that fits your goal.
Ask about packagesQuestions
Who can use the app?
People aged 16 and over. Accounts are created by the trainer, so to start, just write to me or book a first session.
Do I have to train with the trainer?
No. You can train with the trainer, on your own with a plan from the trainer, or with a workout the app builds for your goal, time and equipment.
Where do sessions take place?
In Warsaw, in the Bemowo district. We agree on the details during our first conversation.
What about my health data?
It is seen only by you and the trainer, and only with your consent. I do not sell it or use it for advertising. Details are in the privacy policy.
How do I delete my account?
In the app: Account → Danger zone → Delete account and data. You can also send an e-mail, see the account deletion page.
When will the app be on the App Store and Google Play?
We are working on the release. Until then, the app works in the browser and can be added to your phone's home screen.
Let's start
Write a few words about yourself and your goal. I will reply and suggest a first session. I speak Polish and English.
Or write or call directly: