Free
€0
One training plan at a time, full swim/bike/run plan, intervals.icu sync, 14-day Pro trial.
biostride.uk · checked 2026-10-13
BioStrideAI coaching app for triathlon
Triathlon season macrocycles and weekly plans built from intervals.icu fitness data, with an AI chat coach.
–overall of 5
Not ranked yet (4 of 8 scored dimensions needed) · 0 of 8 dimensions scored · entry reviewed
- Sports Triathlon
- AI level Conversational AI coach
- Plan Adaptive plan + chat
- Human coach unverified
- Price EUR 9/month
- Pushes workouts to 3 devices or apps
BioStride connects to intervals.icu with an API key, reads training history, FTP, LTHR and fitness metrics (CTL, ATL, TSB), and builds a season macrocycle (base, build, peak, taper) around A/B/C races with an automatic taper. It writes a weekly swim, bike and run plan from a library of over 600 workouts matched to the athlete's zones, with a written rationale for each week. Missed sessions and fatigue lead to a rewrite of the rest of the week, and the Pro tier adds daily automatic adaptation, weekly form analysis and an AI coach chat that can adjust the plan. Triathlon only; duathlon and single-sport plans are listed as roadmap. Web app in English, Russian and Hebrew. A free tier allows one plan at a time; Pro is a monthly subscription with a 14-day trial. Operated by a sole trader in Israel.
AI level: Conversational AI coach. An LLM-based coach the athlete talks to in free text; it can explain, negotiate and change the plan, usually on top of a model-driven or rule-based planner. biostride.uk
What the coach does
Thirteen capabilities, as stated on the vendor's own pages: 5 yes, 3 partly, 0 no, 5 unverified. Unverified means the vendor's pages checked do not say; it does not mean absent.
| Capability | Vendor says | Source |
|---|---|---|
| Plan | ||
| Builds a periodized planYes means: Plan generated from goal, date, availability and current fitness, with phases.biostride.uk | Yes | biostride.uk |
| Precise workout prescriptionYes means: Interval-level targets (pace, power or HR) executable on a device.biostride.uk | Yes | biostride.uk |
| Race preparationYes means: Race blocks, taper and a pacing or race-day plan for the target event.biostride.uk | Partly | biostride.uk |
| Adapt | ||
| Adapts to lifeYes means: Missed or moved sessions and availability changes re-flow the plan automatically.biostride.uk | Yes | biostride.uk |
| Adapts to fatigueYes means: Load changes from HRV, sleep, resting HR or subjective feel without the athlete asking.biostride.uk | Partly | biostride.uk |
| Handles injury and illnessYes means: Pause and return-to-training progression, not just skip. | unverified | |
| Relationship | ||
| Post-workout feedbackYes means: Per-session analysis referencing the athlete's data and the plan's intent.biostride.uk | Partly | biostride.uk |
| ConversationYes means: Free-text chat that can answer questions and change the plan.biostride.uk | Yes | biostride.uk |
| Check-ins and accountabilityYes means: Scheduled check-ins, debriefs or reminders initiated by the app. | unverified | |
| Human coach in the loopYes means: A human coach reviews or messages, included or as an add-on. | unverified | |
| Beyond endurance | ||
| Strength and mobilityYes means: Prescribed strength or mobility sessions scheduled alongside endurance work. | unverified | |
| Nutrition and fuelingYes means: Session- or day-specific fueling numbers. | unverified | |
| Multisport planningYes means: Balances load across sports in a single plan.biostride.uk | Yes | biostride.uk |
Works with
3 partners named on the vendor's pages; structured workouts go to 3. ✓ means the vendor states it, – means not stated. A partner not listed is unverified, not unsupported.
| Partner | Reads activities | Pushes workouts | Wellness data | Source |
|---|---|---|---|---|
| Watches | ||||
| Garmin (watches / Connect)Listed under integrations; via intervals.icu.biostride.uk | – | ✓ | – | biostride.uk2026-10-13 |
| Indoor trainer apps | ||||
| ZwiftListed under integrations; via intervals.icu.biostride.uk | – | ✓ | – | biostride.uk2026-10-13 |
| Training platforms | ||||
| intervals.icuReads history, zones and fitness metrics; writes the weekly plan.biostride.uk | ✓ | ✓ | – | biostride.uk2026-10-13 |
Pricing
- Model
- Freemium biostride.uk
- Monthly
- EUR 9 biostride.uk
- Annual
- unverified
- Free tier
- Limited free tier biostride.uk
- Trial
- 14 days biostride.uk
Plans as the vendor lists them, verbatim prices. Prices change; each plan links to its source.
Pro
€9/month
Unlimited plans, AI coach chat, daily automatic adaptation, weekly form analysis, race calendar.
biostride.uk · checked 2026-10-13
Scores and evidence
Each dimension is scored 1 to 5 against the published rubric and cites one public page. Overall – is the mean of the 0 scored dimensions.
| Dimension | Score | Bar | Median |
|---|---|---|---|
| Plan quality | – | 3 | |
| Adaptation | – | 4 | |
| Workout feedback | – | 3 | |
| Coaching relationship | – | 2 | |
| Multisport planning | – | NaN | |
| Transparency | – | 3 | |
| Value for money | – | 3 | |
| Athlete sentiment | – | 3 |
Plan quality
No public evidence yet, so this dimension is not scored and does not count toward the overall. What would count as evidence
Adaptation
No public evidence yet, so this dimension is not scored and does not count toward the overall. What would count as evidence
Workout feedback
No public evidence yet, so this dimension is not scored and does not count toward the overall. What would count as evidence
Coaching relationship
No public evidence yet, so this dimension is not scored and does not count toward the overall. What would count as evidence
Multisport planning
No public evidence yet, so this dimension is not scored and does not count toward the overall. What would count as evidence
Transparency
No public evidence yet, so this dimension is not scored and does not count toward the overall. What would count as evidence
Value for money
No public evidence yet, so this dimension is not scored and does not count toward the overall. What would count as evidence
Athlete sentiment
No public evidence yet, so this dimension is not scored and does not count toward the overall. What would count as evidence
What athletes say
Independent reviews, forum threads and store listings consulted for the scores. Titles as published; read them at the source.
Questions about this app
Answered from the cited facts above only. A question is left out when its fact is unverified.
What kind of AI coach is BioStride?
BioStride is classified as "Conversational AI coach": An LLM-based coach the athlete talks to in free text; it can explain, negotiate and change the plan, usually on top of a model-driven or rule-based planner.
Does BioStride push workouts to my watch or bike computer?
Yes. The vendor states structured workouts are sent to intervals.icu, Garmin (watches / Connect) and Zwift.
Does BioStride adapt the plan to fatigue and sleep?
Partly. Load changes from HRV, sleep, resting HR or subjective feel without the athlete asking.
What does BioStride cost?
EUR 9/month, 14-day trial, limited free tier.
Which sports does BioStride coach?
Triathlon.
Similar apps
Apps for the same sport, ordered by how many coaching capabilities they share with BioStride.
Vendor sources consulted
Spotted an outdated fact? Send the vendor page that states the current one.