TreadCal
Incline walk calories & climbs
About
Estimate calories burned and vertical climb during incline treadmill workouts. It uses your weight, speed, incline, and optional weighted vest to provide accurate estimates. Shareable climb cards summarize your progress.
What's New in TreadCal
1.0.4
October 28, 2026
- After your 3 included workouts, TreadCal shows your own totals and how to keep going. - Walks under 5 minutes no longer use up an included workout. - Apple Watch tells you before your last included workout. - Each treadmill now remembers its own speed, incline, walk or run, and handrails.
MoreSubscriptions & In-App Purchases
$3.99
TreadCal Pro
Unlock unlimited workouts. Pay once. No subscription.
FAQ
How does TreadCal estimate calories burned?
TreadCal estimates active calories by combining your weight, the treadmill's speed and incline, and whether you use a weighted vest or rails. It provides incline-aware estimates for each climb.
What Apple Watch features does TreadCal use?
TreadCal uses Apple Watch for live heart rate monitoring and to display heart-rate zones during your workout. It requires watchOS 27 and appropriate permissions to write workout data to Apple Health.
Can I use TreadCal without an Apple Watch?
While TreadCal integrates deeply with Apple Watch for live data, you can still input treadmill settings and measure your treadmill's grade with your iPhone. However, the full real-time experience is optimized for Apple Watch.
How accurate is the distance measurement in TreadCal?
The distance displayed in TreadCal depends on the speed you enter for your treadmill workout. It is an approximation based on your input and the treadmill's settings.
Does TreadCal have ads?
No, TreadCal is ad-free. The developer explicitly states that there are no ads or analytics, ensuring a distraction-free workout tracking experience.
What is the TreadCal Pro purchase?
The first three workouts are free, and you can unlock unlimited workouts with a single TreadCal Pro purchase. This is a one-time purchase, not a subscription.
Is TreadCal suitable for all ages?
TreadCal has an age rating of 4+, making it accessible for a wide range of users. However, it is an exercise estimator and not a medical device.
How often is TreadCal updated?
The latest version, 1.0.3, was released on October 21, 2026, indicating recent development activity. The app was initially released on October 11, 2026.
