Nobody warns you about this decision before you buy a trainer, and then suddenly you're squinting at a phone propped against a water bottle, wondering how you got here. Here's the comparison that would've saved you that particular indignity.
TV Box (e.g. Apple TV)
The pitch: plug it into an actual TV, and you get the biggest, most comfortable screen in the house with almost no setup fuss.
The catch: TV boxes generally handle fewer simultaneous Bluetooth connections than a laptop does. If you're only pairing a trainer, that's rarely an issue — but once you add a heart rate strap, a cadence sensor, and a controller, you can start running into pairing limits. The fix is usually cheap (an ANT+ dongle or a small connection bridge), just know it might be an extra step, not a plug-and-play guarantee.
Best for: riders who want the simplest possible "sit down and ride" experience and already have a TV in the pain cave.
PC / Laptop
The pitch: the most horsepower, the best graphics settings, and no Bluetooth connection limits worth worrying about — plug in an ANT+ dongle and pair as many sensors as you like.
The catch: you need somewhere to actually put it at a usable height and angle, which is a bigger ask than it sounds once you're also trying to fit a fan, a bike, and your own flailing arms into the same square meter. A cheap laptop stand or the desk we mention in the pain cave guide solves this fast.
Best for: anyone who cares about graphics quality, races competitively, or wants zero compromises on sensor pairing.
Tablet
The pitch: portable, decent screen size, easy to prop up on a stand or handlebar mount, and usually the cheapest of the three options if you already own one.
The catch: performance is the weakest of the three for busy scenes — big group rides and races with lots of riders on screen can push a mid-range tablet's graphics harder than it would like. Battery life while running a graphics-intensive app for an hour is also worth checking before you rely on it.
Best for: casual riders, smaller budgets, or anyone who doesn't want a dedicated screen taking up permanent space.
Quick Recommendation
| Priority | Best choice |
|---|---|
| Simplest setup, big screen | TV box |
| Best graphics, most sensors, racing | PC / laptop |
| Cheapest, most portable | Tablet |
If you're not sure yet, start with whatever device you already own — you can always upgrade the screen later once you know how often you're actually riding. Your legs, not your graphics settings, are what make you faster.
Having connection issues once you've got a device sorted? That's a separate problem: How to Improve Your Zwift Connection →