Aetheris
A coach that sees what your watch cannot.
Aetheris takes the thermal gradient across your torso, how your spine is actually moving, and your cardiac data, and reads them as one picture - in plain language, while you are still training.
Access is invite-only. Aetheris is in TestFlight, so there is no download link and we are not going to pretend there is. Request access below and we will review it. Pre-order customers are reviewed first.
- 01
Request
Tell us how you train, so we can tell whether the current build is useful to you.
- 02
Review
We go through requests in batches and invite in waves as capacity allows.
- 03
Invite
A TestFlight invite lands in your inbox.
Aetheris AI
Your physiological coach.
Proactive when your body signals something worth acting on. Reactive when you have a question. Grounded entirely in your data - not a population average.
Training
Workout recommendations
- Aetheris reads your current thermal load, HRV, and recovery state - then tells you what to do today. Not a generic plan. Your physiology, your session.
Nutrition
Meal planning
- Exertional demand and autonomic recovery signals inform nutritional recommendations. Refuel for what your body actually burned - not an estimate.
Recovery
Recovery plans
- Overtraining accumulates silently. Aetheris flags autonomic suppression and thermal load patterns before they become injury or performance collapse.
Routes
Trail intelligence
- Aetheris learns your running patterns - heat tolerance, elevation response, exertion curves. It suggests trails matched to your physiological profile on a given day.
Proactive
It tells you first
- You do not have to ask. When your thermal matrix signals heat accumulation mid-session, Aetheris surfaces it. The warning arrives before the breakdown does.
Reactive
Ask anything
- "Why am I slower today?" "Can I race this weekend?" "What is my recovery trend?" Aetheris answers with your data - not a generic response.
Where this goes
A living
computational model
of the individual athlete.
Ascendra One is the data layer of a longer project: an AI-powered physiological model of the individual athlete, capable of predicting recovery timelines, flagging health deviations before symptoms emerge, and modeling performance deterioration across seasons - not just sessions.
This is not a health gadget with smarter alerts. It is the beginning of a computational human-performance layer - one that learns your physiology, not a population average.
Ex Astris - The instruments have always pointed outward. We turned them inward.
Questions.
Why can I not just download it?
Aetheris is in TestFlight, which caps how many testers we can have and requires us to invite each one individually. Rather than pretend there is a download button, we are asking who you are so we can invite the people the current build is actually useful for.
How long until I hear back?
We review requests in batches and invite in waves as build capacity allows. We are not going to quote you a number of days we cannot hold to. If you have a pre-order, you are reviewed first.
Do I need the garment for the app to do anything?
The garment is what produces the thermal and spinal data Aetheris is built around, so without it you are looking at a much thinner version of the product. That is the honest answer - the app and the garment are one system.