January 15, 2026 · 3 min read

Analytics Apps Like WattLog.pro — When Zwift Alone Isn't Enough

Zwift is great for the ride itself — worlds, group rides, races. For analysing your form over the longer term, it's a lot weaker — that's not what it was built for. If after a workout you're left with more questions than Zwift answers, that's a sign you need a separate analytics app alongside it.

Signs Zwift alone isn't enough anymore

You don't know how your form is changing over time

Zwift shows a single ride, not a trend. If you want to know whether your form is climbing or standing still, you need a load chart (CTL/ATL/TSB) stretched over weeks and months, not one session. We covered the basics of this chart in our article on the PMC.

You don't have one place for all your rides

Some workouts happen on Zwift, some outdoors, some with your own plan in ERG mode with no 3D world. If that data doesn't come together in one place, it's hard to judge your real weekly load — TSS from a Zwift ride and TSS from a road ride need to be seen together, not separately.

You care about more than just "how did the ride go"

A power curve over time, comparing FTP tests, heart-rate drift relative to power on long rides — these are analyses a riding game simply doesn't offer, because that's not its purpose.

You want training with real ERG, not just virtual resistance

Zwift simulates terrain and varies resistance depending on the route — great for immersion, worse for precisely holding a target power in a specific interval of a training plan.

What a dedicated analytics app actually changes

• One load chart from every source — trainer, road, any app.
• FTP and power-curve history over time, not just from the last ride.
• An ERG mode based purely on your plan, with no influence from virtual terrain.
• Power and heart rate measured together, in real time, to assess the real cost of the effort.

It's not "Zwift or an analytics app" — most cyclists use both at once: Zwift for the ride itself and motivation, WattLog.pro for collecting and analysing data from every workout, regardless of what they actually rode on.

How to get started

If you're still figuring out which indicators to track at all, before you start analysing data from multiple sources, check our article on cycling minimalism — before you add a new app, it's worth knowing what to actually focus on.

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