Decoding OTF Data

Explore

Decoding OTF Data

Ep 1: Exploring OTLive
Ep 1: Exploring OTLive

Entry Date:

7/18/2022

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Idea

Explore

otlive.orangetheory.com⁠

and see what data’s being returned.

tl;dr

💡 OTF provides us a lot of detailed workout data that we can explore.

🟢 You can obtain your workout summary history starting on/around mid-2019 by logging on to

otlive.orangetheory.com⁠

, and click on Your Workout Summary.

🟡 You can count the number of classes you’ve taken with your heart rate monitor on by running the following in Javascript/Chrome debugger.

document.querySelectorAll("div[class*='WorkoutSummaryCard__Card-']").length

🔴 You can count the number of classes you’ve taken by inspecting JSON payload returned by the API (XHR) call made to

https://api.orangetheory.co/virtual-class/in-studio-workouts⁠

via Chrome Debugger’s Network tab.

Legend

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💡 = Insight 🟢 = Do-able by anyone 🟡 = Hack by running Javascript via Chrome Debugger 🔴 = Hack that requires some level of Web coding experience
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What’s next?

Dig deeper into the class summary data.

Raw Notes

Logon to

otlive.orangetheory.com/⁠

⁠

💡 Looks like OTF uses Amazon’s Cognito for authentication.

There is Your Workout Summary tab at the top.

💡 I can see my entire workout history - Basically a copy of everything I got from the email.

The page isn’t paginated. 😏

Open up Chrome Debugger.

Each entry in the workout history is structured like this:

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Looks like part of the class name is code-generated.

💡 I can get class count by running...

document.querySelectorAll("div[class*='WorkoutSummaryCard__Card-']").length

🤔 Not sure if a class would show up here if I didn’t wear my HRM — I suspect that it wouldn’t

Head over to the Network tab and reload the page.

💡 Looks like the page made a call to

https://api.orangetheory.co/virtual-class/in-studio-workouts⁠

to fetch all the workout data.

⁠

😈 Interesting... the payload... doesn’t appear to be compressed...? (Lack of GZip on the header)

💡 The call returns a JSON array, and it looks like we can get the full class count by looking at the # of data points returned here.

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💡 Each entry contains a lot of details about the data collected - Even the minute-by-minute heart-rate.

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Lots of data - Going to dig deeper into the JSON blob next time.

Feedback? Got ideas? Found a bug?

Let me know on this

Reddit thread⁠

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