Since its very first version, Spleeft’s motto has remained unchanged: #VBT4All. Our mission has always been clear—to open the doors of velocity-based training (VBT) to all athletes, breaking down the barriers that have limited its use in day-to-day training. For a long time, we believed that the main barrier was access to reliable and affordable tools.
However, my experience in the world of cycling—where training without power data is now almost unthinkable—made us reconsider: Is access to devices really still the problem? More and more VBT hardware options are becoming available at lower prices, yet a fundamental difference remains compared to power-based training: connectivity.
In cycling, every bike computer and sports watch is integrated with platforms like TrainingPeaks. Coaches instantly receive the training data in their database, and athletes, just by turning on their Garmin, Wahoo, or Coros, can see their next workout and follow it in real-time with precise guidance. This seamless connection between athlete, coach, and platform is what has made power-based training the standard.
So, what if the real barrier holding back the growth of VBT isn’t the lack of devices, but the lack of connectivity?
Introducing Spleeft’s New Update
With that idea in mind, today we’re launching a new update to Spleeft: you can now import VBT data from any device directly into the athlete’s app y automatically sync it with the coach via iCloud o TrainingPeaks.
iCloud Sync for VBT Data
Spleeft has been saving your personal data to iCloud for a while now so you can enjoy it across all your devices. In April 2025, thanks to our collaboration with top coaches like Javier Sola from UAE Team Emirates, we introduced our Athlete Management System for VBT. This version, tailored for in-person coaches, already allowed manual data import from other VBT devices. However, having to import file by file, session by session, athlete by athlete, is not practical for a coach’s workflow.
Thanks to iCloud sync, that responsibility now falls to the athlete: they can import data into their Spleeft app and it will automatically reach the coach. If the athlete uses Spleeft on their Apple Watch or iPhone to measure execution velocity, no manual steps are needed. In the future, we hope to integrate via API with major VBT hardware providers to eliminate manual steps entirely.
Through partnerships with organizations like the Royal Spanish Canoeing Federation, we now support shared device use—multiple athletes using the same device (iPhone or iPad) with Spleeft and sharing data with one coach, even though the app was originally designed for personal use.
Now, all the coach needs is to open Spleeft on their iPhone, iPad, or Mac and analyze the data—which is where their true value lies. You can learn how to get started with iCloud sync here.
TrainingPeaks Sync for VBT Data
From day one, we were clear: we didn’t want to build a closed ecosystem or force coaches to change their workflows. Our goal is to integrate into the workflows they already use. That’s why one of our first integrations was with TrainingPeaks, a global leader in training planning and analysis.
Thanks to their support, Spleeft can now upload VBT data directly to TrainingPeaks and also read the training sessions scheduled by the coach. So, if an athlete logs in to Spleeft with their TrainingPeaks account, they can see their programmed strength session (via the new Strength Builder from TrainingPeaks). Although TrainingPeaks does not yet support VBT-specific metrics, we’re working with them to make this possible. We’re also progressing with platforms like Askesis, which already support native VBT metrics.
In practice, this means that after a training session—whether using an Apple Watch or importing from a third-party VBT device—the data is automatically synced with TrainingPeaks. While it’s not a 100% native integration yet, it does give coaches an instant session summary. For deeper analysis, they can use Spleeft.
This is a key step: Spleeft adapts to the coach’s workflow, avoiding the need to switch platforms for training planning or analysis.
Learn more about analyzing VBT data in TrainingPeaks here.
If you use another platform and would like us to integrate with it, get in touch!
Action Extension: Import VBT Data From Any Device
If we say Spleeft is for everyone, we mean it. While our Apple Watch app is already as accurate and accessible as any VBT device on the market, we understand that some coaches prefer using additional professional tools to collect their data.
Spleeft was built as an entry point into VBT for both athletes and coaches. We want you to enhance your training and services using objective data. And even if one day you switch to a more advanced device, we want Spleeft to remain your ally.
That’s why we’ve developed an action extension for iOS and iPadOS. It’s super simple to use: from your VBT device’s app, just tap “Share” and choose “Sync VBT data with Spleeft.” The data will be saved directly into Spleeft.
When you open Spleeft, the data will be automatically synced with your coach via iCloud o TrainingPeaks. And if you’re a Spleeft PRO user, you’ll have access to advanced analytics to dive deeper into your training and better understand your progress. If you’re an in-person coach, this extension alone will let you manage all your athletes’ progress more effectively.
And this is just the beginning—we hope, with your support, to build automatic API integrations with your devices so that soon all you’ll have to do is power them on, train, and enjoy the process.
Other Minor Improvements
We’ve spent summer 2025 refining our platform. Our last update enabled real-time execution velocity measurement, just like any VBT device. Now it works correctly on all devices with fewer errors, despite the heavy data processing it requires.
On Apple Watch, we’ve added the option to hide Apple Health session data in real-time on the iPhone. As you know, Apple requires a workout session (tracking time, Frecuencia cardíaca, calories…) to access the sensors needed for measuring velocity or jump height. Previously, Spleeft showed this biometric data in real-time on the iPhone. But to end the session, you had to keep both the Apple Watch and iPhone apps open—hurting the user experience. Now, you can choose whether or not to display those biometric stats on iPhone. This does not apply to velocity data: you will still see velocity and jump height in real time on your iPhone during a set.
Also aim to be a VBT data manager, we’ve improved the user experience. You can now edit multiple sets at once in the training history to change the athlete, load, exercise, or date—or delete them in bulk. (Note: you cannot select both jump and VBT sets at the same time as they use different data models.)
We also added swipe to refresh the trend charts.
Availability & Pricing
Only coaches subscribed to Entrenador de Spleeft in any tier can accept athlete invitations. We offer a Basic Coach plan for up to 10 athletes and a Big Coach subscription for unlimited athletes. Prices vary by country (check the App Store) and both plans offer a free 3-day trial plus a discounted launch offer. You can pay monthly or yearly.
En new athlete features are FREE. Anyone can download Spleeft to import data from their VBT device and sync it via iCloud with their coach (who must have Spleeft Coach) or via TrainingPeaks. To access advanced data analytics, Spleeft PRO is still required. Measuring velocity or jump height still requires a one-time payment for VBT de Spleeft, Jump, o Mirar—though these are also included in Spleeft PRO.
Like all our updates, these features are iOS-only. However, we hope to release Android and web versions in the future with enough support. If you’re an organization and want to help make that happen faster—like the Spanish Canoeing Federation already has—get in touch with us.
Iván de Lucas Rogero
Aplicación de rendimiento físico y CEO de MSC
Dedicado a mejorar el rendimiento atlético y el entrenamiento ciclista, combinando ciencia y tecnología para impulsar resultados.
