RestOrTrain vs athletedata

The delivery is the point, and it is genuinely well judged. The coach messages you in iMessage, Telegram or WhatsApp, so there is no new app habit to build and no dashboard to remember to open. For a lot of athletes that is the difference between coaching that gets read and coaching that does not.

Its integration breadth is the widest we have seen in this category: 30 or more apps and wearables, spanning head units, sleep and recovery wearables, indoor platforms, gym logging and nutrition. If your training is scattered across a watch, a trainer app, a barbell app and a sleep ring, it genuinely pulls that into one history, and a heavy lifting session can show up in the next day's ride prescription.

It is multi-sport in a way we are not. Swim, bike, run, gym, Hyrox and ultrarunning all stack into one load picture, and the founders built it around the athlete whose whole week is that stack. A separate, cheaper plan sells the data layer on its own, so you can query your own training history inside your own Claude or ChatGPT without buying the coaching. Their privacy position is also strong and plainly stated: an EU database region, no training of AI models on your data, and read-only access to Apple Health. And they are candid about their own limits in their own documentation, which is rarer than it should be.

Cycling depth, and being able to see it. RestOrTrain plots your power curve against a standard power profile table, by duration and by gender, so a number means something, tracks personal bests at nine durations, and charts your fitness and your form over the season. It also works out your FTP from your rides rather than sending you out to test, though that estimate informs the coach rather than appearing as a number you can go and look at. A chat-first product can tell you about all of this; here you can also look at most of it, which is what most cyclists want when they are trying to work out whether a block worked.

You keep a hand on the plan. A new season plan, and any change to your training zones, arrives as a card you accept or decline, with the plan's reasoning on it, and nothing is written until you accept. You can decline and say why, and it has to answer that. Day-to-day edits are different: when you agree in conversation to move Thursday, the coach makes that change directly, so the plan card is the gate on the shape of your season rather than on every individual session.

It also handles the cycling-specific things a multi-sport coach does not reach for: attach a GPX route and it reads the climbs and gives you a pacing plan. What you tell it about a bad knee or a job that ruins your Tuesdays is written down and carried into later conversations, with a time limit on the things that should expire. Structured sessions go to Garmin, Intervals.icu, Zwift, Rouvy, Wahoo, Hammerhead and COROS, or download as .zwo or .fit, or land in any calendar app through a subscription feed. And what it knows stays yours: RestOrTrain does not train AI models on your data, and neither do its AI providers. athletedata commits to the same thing, so treat that as the floor for the category rather than a reason to pick either one.

Most comparisons on this site are a paradigm gap: a fixed plan against a coach that reasons. This one is not. Both of these read your real data, both reason about it, both take an argument, both rewrite your week. Pretending otherwise would be the easy version of this page and the wrong one.

The difference that actually changes your training is who holds the plan. athletedata rebalances your plan when your recovery data lands and rewrites the whole fortnight once a week, and you find out afterwards. RestOrTrain does not rewrite the shape of your season on its own: a new plan, or a move in your zones, comes to you first as a card with the reasoning on it, which you accept or decline, and a decline it has to answer. Day to day it will still reshuffle your week with you in the conversation. Same intelligence, opposite default about who signs off the big changes.

That is also why RestOrTrain does not sell a data connector and athletedata does. Their cheaper plan hands your history to your own AI to read; ours is the whole loop, where the same system reads your rides, works out what should change, shows you the reasoning, and writes the session back to your Garmin. A triathlete stacking swim, bike, run and gym who never wants another app on their phone is well served by athletedata, and we would say so. A cyclist who wants to see the numbers behind a decision and keep a hand on the plan is who RestOrTrain was built for.

You can, and there is a cheap version of it. athletedata's data-connector plan is separate from its coaching plan, so some athletes pay for that alone to query their history inside their own Claude or ChatGPT, and use a coaching app for the coaching. Running both coaching subscriptions makes less sense: they would both be adapting a plan, and two coaches disagreeing is worse than one.

If you do want to try both, connect your head unit to each of them rather than chaining one to the other. RestOrTrain reads Garmin, Intervals.icu, Wahoo, Hammerhead, COROS, Zwift, Rouvy and Apple Health directly, so it sees your rides wherever else they are going.