TL;DR: Coachbox and Vekta are both modern European answers to the aging American incumbents, but they answer different questions. Vekta, launched in 2025 and adopted by seven WorldTour teams, is a performance modelling system: Critical Power and W’ instead of FTP, machine learning interval detection, AI session summaries, and zones that update daily from training data. Coachbox is a coaching ecosystem: planning, communication, team management, integrated lactate testing, coach education and athlete matchmaking in one platform, localized in seven languages, with free athlete accounts and flat pricing from EUR 12.95 per month. Vekta wins on cycling analytics depth. Coachbox wins on practice completeness, measured physiology and roster economics. Which one fits depends on whether your coaching is built around the model or around the practice.
Two Modern Platforms, Two Different Ideas of Coaching
Coachbox and Vekta both started from frustration with the status quo, but they diagnosed different problems.
Vekta diagnosed an analytics problem. FTP is a crude anchor, TSS blends volume and intensity into one misleading score, and thresholds go stale between tests. So Vekta built a performance modelling system: Critical Power and W’ derived automatically from training data, load split into separate Volume and Intensity signals, durability measured at increasing fatigue levels, and AI performing the structural work of detection, summarising and recalibration. The results convinced the sharpest end of the sport: Lidl-Trek, FDJ-Suez, Decathlon CMA CGM, Team Jayco AlUla, Liv AlUla Jayco, Team TotalEnergies and Team AMANI all moved to Vekta in 2025 and 2026.
Coachbox diagnosed a practice problem. Coaches lose hours to scattered tools: schedules in Excel, communication in WhatsApp, test results in spreadsheets, education somewhere else entirely, and athletes arriving through word of mouth alone. So Coachbox built an ecosystem: training planning and device sync at the core, with lactate testing, AI assistance, in-app communication, team management, the Coachbox Academy and coach-athlete matchmaking around it, in seven languages, with athletes on board for free.
Both diagnoses are correct. The question is which problem is yours.
At a Glance
| Coachbox | Vekta | |
|---|---|---|
| Built in | Belgium | Launched 2025, English-language platform |
| Core focus | Complete coaching ecosystem + physiological testing | Performance modelling + AI analysis |
| Performance model | Zones from measured lactate tests | Critical Power, W’, Pmax from field data, updated daily |
| Lactate testing | AI-powered, LT1/LT2 in under 60 seconds | Not available |
| AI | Coachbox AI assistant, AI lactate analysis | ML interval detection, AI summaries, AI workout builder |
| Device sync | Garmin, Wahoo, Polar, Suunto, COROS, Fitbit, TomTom (Zwift and Rouvy coming soon) | Garmin, Wahoo, Hammerhead, COROS, Zwift, WHOOP, Oura, Tymewear, CORE |
| Languages | EN, NL, FR, DE, IT, ES, PT | EN |
| Free athlete account | Yes, free forever | No, EUR 19.99/month per athlete |
| Coach cost | EUR 12.95 to 69.95/month, flat | Free |
| Education | Coachbox Academy | Blog and case studies |
| Elite credibility | IRONMAN World Champion, pro riders and top coaches among 25,000+ users | 7 WorldTour teams |
Feature Comparison
Performance Modelling and Analysis
| Feature | Coachbox | Vekta |
|---|---|---|
| Performance model | Zones from lactate tests and configured thresholds | CP, W’, Pmax, estimated VO2 max, daily updates |
| Zone updates | Automatic from test results | Automatic from field data, daily |
| Interval detection | Session analysis | ML-based, automatic, with stimulus classification |
| Load tracking | PMC-style load trends | Volume and Intensity separated, Load-8/Load-2, Strain |
| Durability analysis | Not available | Peak power at 0 to 50 kJ/kg fatigue |
| W’ balance | Not available | Real-time, with pre-session projections |
| Race detection | Not available | Automatic, classified by type |
| Session summaries | Via Coachbox AI on request | AI-generated after every session, automatic |
Where Vekta wins: This category, clearly. Vekta’s modelling is the most advanced in the market: the CP/W’ foundation is scientifically current, the durability views connect training to race outcomes, and the automation removes analytical grunt work daily. For pure cycling analysis, nothing mainstream matches it.
Where Coachbox wins: The origin of the numbers. Vekta’s model estimates physiology from field data, which is elegant but indirect. Coachbox anchors zones in measured blood lactate: run a step test, the AI detects LT1 and LT2 in under 60 seconds, and zones update from actual physiology. For coaches who believe measurement beats estimation, that anchor matters, and it produces a branded test report athletes can hold.
Physiological Testing
| Feature | Coachbox | Vekta |
|---|---|---|
| Lactate testing | AI-powered, included in plans | Not available |
| LT1/LT2 detection | Automatic, under 60 seconds | Not available |
| Zone calculation from tests | Automatic, multiple methods | Not applicable |
| Spiroergometry support | Supported | Not available |
| Professional test reports | Branded PDF, client-ready | Not available |
| Testing as a coach revenue service | Yes, per-test pricing model | Not available |
Where Coachbox wins: This is the clearest structural difference. Vekta has no testing capability at all: a coach who runs lactate tests keeps a separate tool, a spreadsheet, and a manual transfer into whatever the platform estimates. Coachbox runs the full chain from test to zones to report to prescription, and free tests come with every plan at signup. For coaches who sell testing as a service, Coachbox turns it into a workflow instead of an evening of admin.
Where Vekta wins: The no-test path. Vekta’s continuous estimation means athletes who never test still get individualised, current thresholds. Coachbox athletes without test data work from configured zones, which stay static until updated.
Training Delivery
| Feature | Coachbox | Vekta |
|---|---|---|
| Training calendar | Full calendar with annual periodization | Unified calendar with recovery and event context |
| Workout builder | Zone-aware structured sessions | AI builder from plain language, voice on mobile |
| Device sync for workouts | Garmin, Wahoo, Polar, Suunto, COROS, Fitbit, TomTom | Garmin, Wahoo, Hammerhead, COROS, Zwift |
| Zwift | Coming soon | Supported today |
| Strava | Via device sync ecosystem | Deliberately not supported |
| Mobile workout creation | App support | Full creation and editing, voice input |
| Multi-sport | Cycling, running, triathlon, swimming, strength and core sessions | Cycling fully automated, running and swimming supported, no strength module |
| Adaptive plans | Coach-driven periodization | AI-adaptive event plans |
Where Vekta wins: Workout creation speed and mobile capability. Describing a session by voice and getting a structured, personalised workout is genuinely fast, and the mobile app covers everything a coach needs away from the desk. Zwift sync ships today.
Where Coachbox wins: Breadth and device coverage where it counts for a real roster. Polar and Suunto athletes sync on Coachbox and cannot sync on Vekta at all. Strength and core sessions live in the same calendar as endurance work, where Vekta only marks them complete. And triathlon coaches get a platform that treats all three sports as first-class.
Athlete and Team Management
| Feature | Coachbox | Vekta |
|---|---|---|
| Athlete profiles | Training and testing history combined | Dynamic performance profile |
| Team management | Group coaching support | Workspaces per team |
| Coach dashboard | Roster overview | Load, recovery, sleep, HRV, RHR, wellness in one view |
| Free athletes on the roster | Unlimited | None, every athlete needs a paid account |
| Wellness monitoring | Structured check-ins | Check-ins plus recovery integrations (WHOOP, Oura) |
| Coach education | Coachbox Academy | Not available |
| Athlete acquisition | Matchmaking service | Not available |
Where Vekta wins: The dashboard’s recovery depth. Pulling WHOOP and Oura data alongside load into a single roster view gives a readiness picture few platforms match.
Where Coachbox wins: The practice around the roster. Free athlete accounts mean the whole roster actually gets on the platform. The Academy develops the coach, and matchmaking brings new athletes in. Vekta assumes you already have committed, paying athletes; Coachbox helps you build toward them.
Communication
| Feature | Coachbox | Vekta |
|---|---|---|
| In-app messaging | Full messaging threads | Chat embedded in session analysis |
| Per-workout feedback | Yes | Yes, with automatic AI summary to both parties |
| Wellness check-ins | Structured daily check-ins | Supported |
| AI support in communication | Coachbox AI can summarize athlete data on request | AI session summary after every workout |
This category is close, and both platforms beat the incumbents (TrainingPeaks still has no real-time messaging). Vekta’s automatic post-session summaries reduce feedback friction elegantly. Coachbox pairs its messaging with an assistant you can interrogate about any athlete’s history before you write your message, and keeps every conversation in the athlete’s own language.
Languages and Pricing Model
| Coachbox | Vekta | |
|---|---|---|
| Interface languages | EN, NL, FR, DE, IT, ES, PT | EN |
| Coach cost | EUR 12.95 to 69.95/month flat | Free |
| Athlete cost | Free with a coach | EUR 19.99/month or EUR 179.99/year |
| 15-athlete roster, coach pays | EUR 24.95/month (Build) | EUR 299.85/month |
| Free trial | 14 days, no credit card | 14 days, no credit card |
| Club pricing | Custom, on request | Not published |
The models are mirror images. Vekta charges nothing to the coach and EUR 19.99 per month for every athlete. Coachbox charges the coach a flat plan and nothing to athletes. For a full analysis with scenarios, see Vekta Pricing.
The language difference is just as structural. Vekta operates in English. Coachbox is localized in seven languages, which for a Benelux coach, or any coach whose athletes cross language borders, decides whether athletes adopt the app or tolerate it.
What Vekta Does Better
Cycling analytics, by a distance. CP and W’ modelling updated daily, real-time W’ balance, durability curves at increasing fatigue, race detection, torque analysis and a physics-based climb calculator. If your coaching value lives in the depth of your analysis, Vekta gives you instruments nobody else offers in one platform.
AI that removes daily work. Machine learning interval detection (a self-published benchmark claims 97.54 percent accuracy), automatic session summaries to coach and athlete, and a workout builder that works from voice. The admin hours it absorbs are real: migrating coaches report growing rosters without growing hours.
Elite validation. Seven WorldTour teams left the market leader for Vekta in under two years. No other platform in this comparison, Coachbox included, has a proof point that strong at the top of the sport.
Zero-cost coach entry. Free coach access means evaluating Vekta costs nothing but time.
What Coachbox Does Better
Testing is in the platform, not missing from it. Lactate step tests with automatic LT1/LT2 detection, multi-method zone calculation, automatic profile updates and branded PDF reports, included in every plan. Vekta’s estimates are clever; Coachbox’s measurements are yours, and they become a billable coaching service.
The whole roster gets on board. Free athlete accounts forever, in seven languages. No athlete is priced off the platform and no athlete struggles with a foreign-language app. On Vekta, every single athlete costs EUR 19.99 per month and works in English.
Flat economics for growing practices. Unlimited athletes from EUR 24.95 per month. A coach who grows from 10 to 40 athletes pays the same; on Vekta the platform cost quadruples, whoever pays it.
A practice, not just a model. The Academy develops your methodology, matchmaking brings athletes to you, and communication, planning and testing share one home. Marketplace and athlete payment automation are on the Coachbox roadmap (coming soon), extending the same idea.
Multi-sport and device reality. Runners, triathletes, swimmers and strength work are first-class citizens, and Polar, Suunto, Fitbit and TomTom athletes sync today.
Who Should Choose Vekta
Vekta is the right choice if you:
- Coach performance-focused cyclists who train on power and will each carry a subscription
- Build your value on analytical depth: durability, W’ balance and modelling precision are your language
- Want AI to absorb your daily analysis work: detection, summaries and zone updates on autopilot
- Work happily in English with athletes who do the same
- Do not run physiological testing and are satisfied anchoring training on field-data estimates
- Live on mobile and want full workout creation away from the desk
Ideal Vekta user: An English-speaking performance cycling coach with 5 to 20 committed, paying athletes on Garmin or Wahoo, whose service is built on analytical insight rather than testing, education or volume.
Who Should Choose Coachbox
Coachbox is the right choice if you:
- Use lactate testing, or want testing to become a paid part of your service, with results flowing into zones automatically
- Coach a real-world roster: mixed budgets, mixed sports, mixed languages, where free athlete accounts decide who gets on the platform
- Pay for your athletes’ software and want costs that stay flat as you grow
- Coach in the Benelux or across European borders with athletes who expect the app in Dutch, French, German, Italian, Spanish or Portuguese
- Want one subscription for the practice: planning, communication, testing, education and athlete acquisition
- Coach triathletes, runners or swimmers as more than a sideline
Ideal Coachbox user: An endurance coach managing 10 to 50+ cyclists, runners or triathletes who tests athletes, works across languages, and wants the whole coaching practice, not just the analysis, on one platform.
Switching Between Vekta and Coachbox
From Vekta to Coachbox: Device connections for Garmin, Wahoo and COROS transfer trivially, and Polar and Suunto athletes gain sync they never had. Your zone structures can be recreated, and the first lactate test replaces estimated thresholds with measured ones. What you give up: CP/W’ modelling, durability analysis and automatic session summaries. If those instruments carry your coaching, weigh that honestly.
From Coachbox to Vekta: Your cycling analysis will deepen considerably. What you give up: testing workflow, free athlete accounts, six of your seven languages, Academy access and matchmaking, and your platform cost shifts from one flat plan to a per-athlete meter.
Many coaches will conclude the platforms are not even direct substitutes: Vekta replaces your analytics stack, Coachbox replaces your practice stack.
The Bottom Line
Vekta and Coachbox are both what happens when serious people rebuild endurance software from scratch, a decade after the incumbents stopped innovating. Vekta rebuilt the model: Critical Power, W’, durability, and AI that works. The WorldTour noticed, and for analytics-driven cycling coaches it is the strongest tool on the market. Read our full Vekta Review for the complete picture, or see how it stacks up against the incumbent in Vekta vs TrainingPeaks.
Coachbox rebuilt the practice: testing, planning, communication, education and athlete acquisition in one platform, in seven languages, with athletes on board for free and pricing that stays flat as you grow.
Choose based on where your coaching creates value. If it is in the depth of the model, choose Vekta. If it is in the breadth of the practice, and in zones your athletes can watch being measured, Coachbox was built for you.