Technology

Inside SkolCoach: your data, sports science and no silent plan changes

SkolCoach is not a chatbot handing out generic advice based on guesswork. The home page covers the five foundations of the product; here we look under the hood: your device data pipeline, the sports-science knowledge base and the operating discipline. The coach never changes your plan without approval and backs every recommendation with evidence.

Layer one: your data

  • Sessions — pace, heart rate by interval, power and elevation; delivered from your watch through intervals.icu within a minute of syncing.
  • Recovery — HRV, resting heart rate and sleep stages from Oura, WHOOP, Garmin, Polar or Suunto.
  • Nutrition and weight — your FatSecret or YAZIO diary, so the coach can relate fueling to training load and recovery.
  • History — your complete archive from day one: decisions are based on trends, not a single outlier.

Layer two: the knowledge base

The foundation is a library of more than 200 books and research papers covering endurance and strength training, recovery, nutrition and injuries. SkolCoach uses retrieval-augmented generation (RAG): the coach retrieves relevant material and grounds both chat answers and the mandatory plan-building step in those sources. A recommendation is therefore not just “the model's opinion” — it is a conclusion with a source you can open and verify. Coach Focus: shows which sources currently take priority. It is built from your sports, training phase and goals. You can dial a source down or make it central with a personal weighting. Scientific material also displays its evidence level and the population studied. The Knowledge base guide.

Layer three: operating discipline

Each morning, the coach reviews last night's recovery and the previous day's load against your plan. If an adjustment is warranted, you get a proposal card explaining what will change, why and which numbers support it. The plan is updated only after you select Apply. No silent reshuffling and no unexplained decisions: this is how the system is designed, not an optional setting.

What this looks like in practice

The demo athlete profile contains 2,325 real sessions dating back to 2021, with morning reviews, plan adjustments and fitness trends. Once you connect your own devices, the same workflow starts using your data from the first morning.

FAQ

How is SkolCoach different from ChatGPT?

ChatGPT cannot see your sessions, sleep or HRV, and does not retain that context between conversations. SkolCoach works from your live data, retrieves answers from a specialist knowledge base and cites its sources. It is a training-management tool, not just a conversation about training.

Can the coach make mistakes or hallucinate?

That is why every recommendation comes with a knowledge-base source and supporting numbers from your own data, so you can verify the reasoning. If no suitable source is available, the coach explicitly labels the advice as based on athlete data rather than inventing a citation. Plan changes also require your confirmation, keeping the final decision with you.

Who can see my data?

Your data belongs to you and is used only to power your coach. Registration is open, with immediate access and 30 days of full Pro free.

Can I try it before paying?

Yes. The home page includes live demos of session analysis, knowledge-base search and morning metrics. After registration, you get a fitness assessment based on your own data, with the first 30 days of Pro free.

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