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Release notes

What changed,
and what you get.

Each entry says what you can now ask that you could not before. Improvements to how IntervalSync reads your training apply to the data your assistant already has access to — nothing about what is stored, or what is shared, changes with a release.

14 October 2026

Latest

Coach plans, and teams that read each other's training

  • A coach's assistant can read the athletes who share with them An athlete approves read-only access to their training for a coach, and can withdraw it at any time. Every read is in the athlete's history with the coach's name. Coach 5 covers up to five athletes for $15 a month or $149 a year, Coach 15 up to fifteen for $29 a month or $289 a year, and the athlete needs no plan of their own.
  • A coach and each athlete keep a shared context A brief and the updates the two of them publish, read by both and their assistants and by nobody else. When they part, the coach keeps it as a record for a year and the athlete keeps a copy of their own for a year.
  • Two to ten people can form a team Each member is on a plan of their own, and a team costs nothing extra. Members share one context, and their assistants read each other's training. Each member chooses which of five groups of their training is shared: activities, wellness, planned workouts, a fitness and load summary, and profile and zones.

7 October 2026

Leaving IntervalSync ends its access at Intervals.icu too

  • Disconnect and Delete account end the authorization at Intervals.icu Disconnecting your training, or deleting your IntervalSync account, now also asks Intervals.icu to end IntervalSync's access, so IntervalSync no longer appears among your connected apps there.

6 October 2026

Calendar links you can reset, and more assistants

  • Each calendar feed has its own private link, which you can reset If a calendar link has been shared, reset it from your workspace: the old link stops working and nothing more can be read with it. Calendar apps then subscribe again with the new one.
  • Cursor can sign in, and the setup guides cover more assistants Guides for Gemini, Mistral Vibe, Cursor and Zed sit beside Claude, ChatGPT and Grok. It is still one URL for any assistant that speaks MCP.
  • A permission you did not grant can be granted later When Intervals.icu refuses a request for a permission that was not approved at sign-in, your assistant is told which one. Refresh Intervals permissions in your workspace, on every plan, asks Intervals.icu for it again.
  • Busy means try again at, not failed IntervalSync follows Intervals.icu's own rate limits. When one is reached, your assistant is told which, when to retry, and that nothing was sent.

5 October 2026

A 14-day trial, and fewer failed reads

  • New accounts start with 14 days of full access Reads and confirmation-gated writes, up to 300 Intervals.icu calls a day, then Free unless you subscribe. Accounts that already had a trial keep the end date they were given.
  • A read that fails for a moment is tried again A brief server error or dropped connection at Intervals.icu is retried before your assistant hears about it, and a calendar request that cannot work says what to change.

28 September 2026

Terms of service, and a daily limit on every plan

  • The terms are published What IntervalSync is for, what each plan includes and how billing works are at intervalsync.icu/terms. The trial and Pro can make up to 300 calls to Intervals.icu a day. Every plan has a daily limit, because Intervals.icu limits IntervalSync's calls for all its athletes together.

27 September 2026

Reviews that start from what you are training for

  • Review protocols your assistant can suggest and follow A weekly review, a 42- or 90-day progress check, a block, one ride, readiness, or an event. Your assistant can show you the protocol it is following, so next week's review is the same review.
  • One training context, shared by every assistant you connect Your goal, events, constraints, preferences and notes are saved once, in your words, when you ask. Claude, ChatGPT and the rest read the same context, and you can see and remove any of it in your workspace.
  • Critical power worked out from your best efforts Intervals.icu leaves the rolling critical power empty on activities. Your workspace's progress charts now work it out from your best efforts instead.

27 August 2026

Ask about the climbs, not just the ride

  • Every sustained climb in a ride, found and measured Intervals.icu records your elevation but does not break it into climbs, so questions like which one was steepest, or where you climbed fastest, had no answer. Your assistant can now pull each climb with its length, height gained, average and steepest gradient, and VAM — and see whether your power and heart rate held to the top or faded on the way.
  • A climb stays one climb through a switchback A hairpin that gives back a few metres, or a false flat halfway up, no longer splits one climb into two smaller ones. A descent long enough to have genuinely ended the climb still does, and a stretch of rolling road that only trends upward is not reported as a climb at all.

26 August 2026

Tell us when something is wrong, from inside the conversation

  • Your assistant can report a problem without you leaving the chat When IntervalSync returns something wrong, missing, or confusing, ask your assistant to report it and it reaches us directly. It works on every plan, including a Free account that has used its reads for the day.
  • You can see exactly what was sent in your name, and our reply Anything your assistant sends on your behalf appears in your workspace, word for word, along with any answer from us. Your assistant can read the reply too, so you can pick the conversation back up wherever you left it.

26 August 2026

Clearer setup, and a calendar that subscribes in one step

  • Setting up is laid out step by step, per platform Your workspace now shows both halves of the connection — your Intervals.icu account, and the assistant you want to reach it from — and marks whichever one is still outstanding. Claude, ChatGPT, and Grok each have their own instructions, with a link to that platform's own documentation.
  • Google Calendar subscribes in one step The Google Calendar button opens Google's subscribe screen with your training feed already filled in, so your planned workouts arrive without a URL to copy anywhere. Apple Calendar and Outlook sit beside it, and every one of them keeps up with your plan as it changes.

11 August 2026

A more usable Free day

  • Free now allows one pull per tool each day, not one in total A single daily allowance was spent by whichever request came first — often a calendar refresh you never asked for — leaving your actual question refused. Activities, wellness, planned workouts, and your calendar now each have their own allowance, so a Free day covers a real look at your training.
  • A limit message tells you what is still available When one tool reaches its daily limit, the response names that tool and says the others still have theirs, so your assistant can answer a different question instead of stopping.

10 August 2026

Remove a planned workout from your calendar

  • Planned workouts can now be deleted A training block can be rewritten rather than only added to. Ask to clear a session you are not going to do, or to replace a week with a shorter one, and the workouts that are no longer wanted come off the calendar instead of being left behind.
  • A deleted workout is handed back before it goes Deleting a calendar event cannot be undone in Intervals.icu, so the full workout — its name, date, and instructions — is returned to you as it is removed. If it turns out you wanted it, it can be recreated from that. Only planned workouts can be deleted; notes, targets, and race days are left alone, and each deletion is confirmed one workout at a time.

10 August 2026

Your whole training calendar, and safer edits to a planned session

  • The full calendar, however far ahead you plan Asking about the weeks ahead now returns every planned session in the range, a page at a time, along with the reference your assistant needs to change one. A densely planned block comes back complete instead of partially.
  • Editing a workout leaves the rest of it alone Renaming a session, moving it, or rewriting its instructions changes only what you asked for; everything else on the workout is carried across untouched. If anything else does end up cleared, it is reported back to you rather than left to be noticed later.
  • Wellness history starts with your most recent days A question about the last few months now leads with the latest days and works backwards, so trends in sleep, resting heart rate, and fuelling are read from where you are now rather than from the far end of the range.
  • A workout that does not save is reported as not saved If Intervals.icu declines a planned workout, you are told. It is no longer possible to be told a session was added when it was not.
  • A planned workout can be scheduled with just a date A session with no particular start time can be given a date on its own, and a time zone can no longer slip in and move the workout to the wrong hour.

3 August 2026

Whole-ride analysis, effort detection for trainer workouts, and faster first answers

  • More of your ride in a single pull An overview of an activity now spans the whole session at whatever level of detail you ask for, so questions about pacing, fade, or how the second half compared with the first are answered from one request.
  • Interval numbers for ERG and trainer-app rides A workout synced from a trainer app usually arrives as one long block with no intervals recorded, so there was nothing to analyse. IntervalSync now finds the efforts in your power trace and reports each one's duration, power, heart rate, cadence, and how much you drifted across it.
  • Exact highest and lowest power for every effort Each effort reports its peak and floor from within the effort itself, with the ramp into and out of it set aside — it belongs to neither. That makes one repetition directly comparable with the next, and a stretch that was really a ramp or a descent is marked as such rather than given an average it never held.
  • Your assistant can find data it did not know existed It can now look up every field available on an activity, so questions can reach things like time spent in each power or heart-rate zone instead of only the handful of fields it happened to guess.
  • “This week” now means this week Questions about recent training resolve against the real date rather than whatever date the assistant assumed, which matters most when comparing a block against the same weeks last year.
  • Quicker to answer, and ready when you are IntervalSync responds promptly even after sitting idle, and several athletes can use it at the same time without waiting on one another.
  • Big questions still get a complete answer When a question covers more data than one answer can carry, the remainder comes back as real statistics — its range, its averages — so the shape of what you asked for is always accounted for.