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For coaches · Honest comparison
Coachbox vs IntervalCoach for coaches
Coachbox puts an AI chat on top of your athletes' data. IntervalCoach puts the AI into each athlete's plan. Here is how they compare for a coach.
Quick verdict
Coachbox is a coaching platform billed by roster size, with unlimited coaches on every plan and Coachbox AI, a chat you can ask about your athletes' data. IntervalCoach adapts each athlete's plan every day and gives you a daily list of who needs you. Coachbox gets cheaper per athlete as the roster grows and suits a team of coaches sharing one account. IntervalCoach suits a coach who wants the plans to keep up by themselves, on Intervals.icu.
Coachbox and IntervalCoach, side by side
| What coaches weigh | IntervalCoach | Coachbox |
|---|---|---|
| Who pays, and how | You pay per athlete seat: €10 each for 3 to 4 athletes, €8 from 5, €7 from 15, and a quoted price from 40. The seat includes that athlete's full Max plan, so the athlete pays nothing. | The coach pays a plan by roster size, billed annually: €19 a month for 5 athletes, €49 for 25, €79 for 50 and €149 for 100, with a per-athlete price above each plan's allowance. |
| Monthly cost for 5 / 10 / 20 athletes | €40 / €80 / €140, paid by you. Your athletes pay nothing. | 5: €19 (Base). 10: €19 plus €2.50 for each athlete over 5. 20: €49 (Build). Billed annually. |
| AI plan adaptation | Yes. Each athlete's plan adapts daily to their recovery, their load and what they actually did, and follows the standing instructions you set. | Coachbox AI, a chat over your athletes' data |
| Daily list of who needs you | Yes. Who needs you today and why, with a handled state, plus what changed since you last looked. | Not listed |
| Recovery data from wearables | Yes. HRV, resting heart rate and sleep from Garmin, Whoop, Oura, Apple Health and Google Health, read against each athlete's own baseline. | Yes. Recovery monitoring and health data synced from Garmin, Polar, Wahoo, Suunto, Apple Watch, COROS and others |
| Intervals.icu | Runs on it. You and each athlete connect a free Intervals.icu account. | Not listed |
| Billing your athletes | No. You invoice your athletes yourself. | Not listed |
| Coach-athlete messaging | No direct messaging. You and the athlete share the Coach+ thread. | Yes, communication with athletes and your team in one place |
| Template library or marketplace | No template library or marketplace. | Yes, workout templates |
| Team and assistant coaches | No shared team account. Each coach buys their own seats. | Yes, unlimited coaches on every plan |
| Free trial | No. Plans start at 3 seats, and you can drop seats or cancel whenever your roster changes. | 14-day trial, no card required |
Where Coachbox is the better choice
You coach as a team. Every Coachbox plan includes unlimited coaches, so a club or a coaching company shares one account, and communication with athletes and staff sits in the same place. On IntervalCoach each coach buys their own seats and there is no direct messaging.
You have a large roster and a tight budget. The per-athlete price on Coachbox falls as the roster grows, and the Prime plan covers 100 athletes for €149 a month, billed annually. IntervalCoach quotes large rosters individually.
Where IntervalCoach is the better choice
You want the AI to change the plan and show you what it changed. Each athlete's week adapts overnight to their recovery, their load and what they actually did, within the standing instructions you set. With approvals on, proposed changes for the whole squad wait in one inbox: what was planned, what is proposed and why.
Your athletes train on Intervals.icu. IntervalCoach runs on it, and Coachbox does not list an Intervals.icu connection. The seat includes the athlete's full Max plan, so they pay nothing, and you get the daily attention list, what changed since you last looked, the squad timeline, squad analytics and a Monday digest email.
Common questions
How is Coachbox AI different from IntervalCoach?
Coachbox AI is a chat over your athletes' data: you ask and it answers. On IntervalCoach the plan itself adapts every day to each athlete's recovery, load and what they did, within the standing instructions you set. You can also work inside any athlete's account with Coach+ to ask about their data or change their plan.
Can several coaches share one account?
On Coachbox, yes: every plan includes unlimited coaches. On IntervalCoach there is no shared team account, so each coach buys their own seats.
Which is cheaper for 20 athletes?
Coachbox. The Build plan covers 25 athletes for €49 a month, billed annually. On IntervalCoach, 20 seats cost €140 a month, and each seat includes that athlete's full Max plan, so your athletes pay nothing.
Coach your squad on IntervalCoach
Sign in with Intervals.icu, start your Coach Plan and invite your first athletes. Each seat carries one athlete, and they pay nothing.
Add or drop seats whenever your roster changes.