August put the coach where you already look: on your wrist, on the race page you are eyeing, and in the calendar you actually plan from. Here is what changed since the July update.
Your coach is on your wrist
The iOS app now ships with a full Apple Watch app. Raise your wrist for your readiness score, today's planned session, your overnight health metrics, and your training score with the week's trend behind it. Complications put readiness or today's workout straight on your watch face, and your planned sessions appear in the Watch's own Workouts app, ready to start.
Race pages that plan your season
Every race in the catalog now has a page worth reading before you enter.
What this race demands is a coach's read of the course, built from its distance, climbing, sport and season: the physical demands that follow, fueling guidance for long events, and estimated finish-time ranges by level.
What would it take you? lets you pick the level closest to yours and see a finish window for that exact course, its real distance and climbing rather than a generic table, plus the weekly training hours a solid preparation typically needs.
Your road to race day maps the actual Base, Build, Peak, Taper and Race-week phases onto real calendar dates, using the same periodization the coach uses for real plans. What you see on the race page is what your plan would look like.
Making it your goal is one click from that page, whether or not you already have a goal race. Find a race before you even have an account and signing up from that page carries it with you: after connecting Intervals.icu the race is already on your calendar as your goal, and onboarding starts with your plan pointed at race day. There are dedicated pages per sport and per country, an "Add race day to your calendar" button for your own agenda, and a "Train for this race" badge organisers can put on their event site. All of it in your own language, across all 17.
Reshape the plan from your phone
Open any upcoming session and tap Swap to change the sport or the workout type, and whether the replacement should be easier, similar or harder. The coach builds a session sized to the one it replaces, so swapping a long ride for a run gives you a run of similar training value rather than a run of the same length, and your plan reshapes around the change instead of putting the old session back. There is a Move button too, with a date picker, so moving a session on a phone is finally possible at all.
Coach+ got more capable in the same direction. Ask for a session at a specific pace and you get that pace, single or a range, for running and swimming. Name your sessions yourself and the names stick. Ask it to convert a workout to heart-rate, power or pace targets and it changes only the targets, leaving your intervals and structure intact. Coming from another training platform, you can say "remove all the Athletica workouts from the next two weeks" and clear the lot behind one confirmation. And it knows real races now, so mentioning the Marmotte or Roth gets you planning against the actual distance, climbing and date.
The coach shows its working
Every entry in the Agent Log now says what set it off, how far it was allowed to reach, and when it gets looked at again. Open one and you see whether it ran on your scheduled daily check, because your watch synced, because you changed a setting, or because you asked in chat; whether it could touch only today, the week, or your whole plan. Plan changes carry their justification in your own language, so "Dropped Sunday Ride" now comes with the reason. Runs that deliberately left everything alone say so, and all of it applies to the entries already in your log.
The Fitness, Fatigue and Form numbers explain themselves wherever they appear, on the dashboard ring, the trend charts, the calendar's weekly numbers and the Training Plan page: what the metric means, how it is calculated, and how the coach uses it in planning.
The dashboard also speaks up when something is wrong outside the app. If your activities arrive only through Strava, Strava strips the power, heart rate and training load on the way, so your workouts land empty; there is now a warning with the few-minute fix. Same when IntervalCoach loses write access to your Intervals.icu calendar, which otherwise just looks like the plan going quiet.
Analytics gained a body fat trend chart, a Season column next to your all-time bests for both peak power and running, and your 30 and 60-minute power, which is where endurance progress actually shows up. Your best efforts are noticed as they happen too, in beta under Settings: beat your best power for a duration or your best time over a distance and the post-workout email opens with it.
A coach that does what it says
The biggest work of the month was making the coach's word binding.
Your instructions are rules. Write "never give me VO2max" or "nothing above sweet spot" and those sessions leave the options entirely, before anything is ranked, so no training phase, plan rebuild or on-demand request can bring them back. Fitness tests obey the same rule. Naming your hard days means those days and no others. A day you call easy is protected from hard work. A week away is one week, not that weekday forever. You can cap your long runs. Softer wording still works as a preference, exactly as before, and Settings lists what the coach took from your words right under the box.
Your age counts, if you want it to. Recovery between hard sessions genuinely lengthens with age, but the planner treated a 70-year-old like a 30-year-old. Turn on Age-aware planning under Settings, Training and the coach uses the birth date from your Intervals.icu profile: from 50+ it keeps at least two days between hard sessions and plans at most two quality sessions a week, and from 60+ it also progresses your training load in smaller steps against your own history. Off by default, and it applies to every sport you train.
Your weekly target holds. After each Sunday update the coach checks the week against its fresh target and trims any excess the careful way, shortening the biggest sessions before ever dropping one, never touching today or a workout you added yourself. Individual days are capped against your own heaviest recent sessions, consecutive days are capped as a stretch rather than one at a time, and on weeks with four or more sessions no single day takes more than 40% of the load.
Your race weeks are honest. Every A or B race is followed by a proper recovery week, the day after your race is protected wherever it falls, and the week between two races two weeks apart is recovery rather than a near-full build.
Your analysis is checked. Sessions are compared against the most similar past session on normalized power, so a well-executed interval day with a long easy block is no longer read as a decline. Rest laps stop counting as work intervals, a dropped heart-rate strap is recognised as bad data rather than a weak effort, hard swims are read from pace, and a race is measured against the race. Anything the analysis cannot derive from your data, a percentage without the number behind it or a trend without a comparable session, is removed before it reaches you. Your post-workout analyses, readiness decisions and weekly insights also run on an upgraded coaching model now, which in blind side-by-side testing across three sports and seven languages tied its feedback to your actual numbers noticeably more often, and answers a little faster.
Your goal target means one thing. It is race-day fitness now, which is the number your progress is measured against, and the setup wizard's ceiling is the real one rather than one nudged upward so the slider always showed room to grow.
How your RPE rating feeds all of this →
Bug fixes and reliability
A heavy month underneath. Switching to a new watch no longer reads as a month of poor recovery, because your HRV and skin-temperature baselines now follow your current device. The illness check spots an oncoming illness earlier, from the multi-day climb in resting heart rate that our data shows is the clearest early sign, and the return ramp waits for your HRV to come back as well. On the calendar: a workout you delete on Intervals.icu stays deleted, a drag to another day sticks, and finishing your workout no longer prompts the coach to schedule a new one on the same day. On workouts: run files sync to Zwift again, the Ramp Test is the real open-ended protocol, hard bike sessions no longer stretch to fill a three-hour slot, and strides come out as strides. Long sick, injury and holiday periods are respected for their whole duration. Your recovery week no longer walks a day forward every time you set it. And the footers, sign-offs and links at the bottom of every email are finally in your own language. See all of it in the full changelog.