AI workout generation

Workout Writer has two separate capabilities:

They are intentionally different.

Does Workout Writer use AI to understand my workout text?

No.

When you type a workout, Workout Writer uses a rule-based system to interpret what you wrote.

Immediate feedback: as you type, the workout takes shape immediately. You can see exactly what the app recognised.
Consistent results: the same description always produces the same workout.

That means a workout you save, share, or revisit later still reflects what you actually wrote. No guessing. No reinterpretation.

AI is available as an optional idea generator.

Workout Writer uses Google Gemini for this feature.

AI is never used automatically.

No information is sent to any AI service unless you explicitly choose to generate a workout using the AI feature.

If you never tap the AI button, nothing is sent.

Even when you choose to use AI, the information sent is intentionally limited.

Only the following is sent:

Nothing else.

Workout Writer includes your tag names so AI can generate workouts using terms your app already understands.

If you have a tag called Tempo, AI can use the word Tempo in the workout text.

Because that is one of your configured tag names, Workout Writer will reliably recognise and structure it correctly.

So AI can help with the draft, while the final parsing still follows the same predictable rules as anything you type by hand.

A common workflow looks like this:

Generate a draft to add variety (for example, a fresh twist on a Wednesday Easy run)
Edit the text to match your plan
Send once you're happy with the final structure

That is the best way to think about it: