Software company Multipassionate, based in Utrecht, the Netherlands, has launched Smash Coach, an AI-assisted coaching platform designed specifically for athletes who combine HYROX-style race preparation with multiple other sports, fitness classes, and activities.
According to Multipassionate, traditional single-sport apps can often require athletes to stitch together conflicting regimens – risking high-intensity leg sessions right before a padel match or soccer game. Smash Coach approaches scheduling from the athlete’s actual weekly training effort, mapping race dates, rest days, injuries, and non-negotiable sports or group fitness classes into a unified weekly calendar.
“Most people who enter HYROX were athletes long before the race existed,” said Saeed Ildarabadi, founder of Multipassionate. “They play padel, they run with a club, they never miss their Wednesday class. Every app I tried asked them to drop all that and follow a race plan. Smash Coach does the opposite: it starts from the week you already have and fits the race into it.”
“The coach is AI, and we are open about that. What matters is that it explains every decision, it never overrides you, and a session that fails our safety check never reaches your watch. HYROX is where we start, because those athletes already train across disciplines. Next comes more race formats, including running races from 5K to the marathon. And the race is optional: anyone who plays more than one sport can have one coach that sees the whole week.”
Key features & capabilities:
- Multi-sport integration: Supports more than 25 sports – including padel, tennis, football, climbing, boxing, and rowing – alongside 20 group class formats such as HIIT, indoor cycling, reformer pilates, and yoga. The platform treats classes as completed training, tailoring subsequent sessions to fill gaps without overtraining.
- Garmin ecosystem integration: Launched recently with native Garmin account synchronisation, allowing workouts, sleep scores, heart rate variability (HRV), Body Battery, and resting heart rate metrics to automatically inform coach recommendations. A dedicated Connect IQ watch app also enables offline guidance with countdowns, targets, and heart rate gauges directly on compatible Garmin devices.
- Explainable AI & safety checks: Every session outlines its rationale in plain language. Each proposed workout passes a safety check before being added to the calendar, and the platform remains strictly non-overriding – athletes always stay in control of manual edits or moved sessions.
- Injury-aware protocols: Workouts adapt dynamically to reported injury statuses graded on a five-step scale from Cleared to Serious.
- Data privacy: Built in the EU with privacy-by-design standards; injury and cycle data are used exclusively upon explicit user consent without third-party analytics trackers.
Smash Coach is accessible via a web browser with mobile home screen installation support. A free two-week trial of the Pro coaching tier is available without requiring credit card details.
Following the trial, Pro pricing is €14.99 per month or €131.88 annually (inclusive of VAT). A free logbook tier remains active indefinitely for manual logging, calendar tracking, workout mode, and Garmin connectivity for users without an active subscription. While HYROX is the initial supported race format, athletes can also use the platform without booking a race simply to coordinate multiple disciplines.
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