Comparison

Klemy vs TreadCal

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Klemy

This app guides you through various treadmill workouts, including popular plans like 12-3-30 and Norwegian 4x4. It automatically adjusts speed and incline on compatible treadmills or provides manual prompts for others. Track your progress, heart rate, and even shoe mileage.

Highlights
  • Pre-set and custom treadmill workouts
  • Automatic speed/incline adjustment (FTMS)
  • Manual speed/incline prompts
  • Heart rate and zone tracking
  • Shoe mileage and treadmill care logs
  • Workout export (FIT/TCX)
  • Live Activities and widgets
Features
Read full description

Klemy Treadmill runs planned workouts on any treadmill. Start 12-3-30, Hill Walk or Norwegian 4×4 in one tap, or build your own. A Bluetooth FTMS treadmill changes speed and incline for you. On any other, a countdown tells you what to set. No smart treadmill? Set your speed and the app calculates distance and pace. With FTMS, speed, distance, incline and elevation sync on their own. Start on Apple Watch, iPhone, or both together. Workouts - Ready for walking and running: 12-3-30, Interval Walk, Hill Walk, Rolling Hills Walk, Easy Run, Zone 2 Run, Norwegian 4×4, 30/30s, Hill Repeats, Tempo Progression - Zone 2 Run and Zone 2 Hike adjust your FTMS treadmill's speed and incline to keep your heart rate in zone 2 - Build your own from warmup, intervals and cooldown, with speed and incline for every step - A live chart shows what comes next, on iPhone and Apple Watch - Need a moment? Push the next change back 30 seconds or a minute - Optional tap on your wrist before each change Tracking - Works with every treadmill and walking pad, offline or over Bluetooth FTMS - Speed and incline shortcuts for quick changes - Set speed and incline with Siri, from iPhone or Apple Watch - Heart rate and zones, cadence, active energy and elevation gain - Shoe mileage: log the distance on each pair and know when one is worn out - Treadmill care: an odometer per machine, service due dates and deck guidance for your model - Mark a workout as a race, then filter your history to races - Export workouts as FIT or TCX files for your training log - Customizable workout layouts on iPhone and iPad - Live Activities and widgets - Body temperature, skin temperature and heat strain for heat training, with compatible Bluetooth sensors - Metric or imperial units and optional media controls - No account, no sign-up, no tracking The app and all in-app purchases are licensed under Apple standard terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula

About

TreadCal

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.

Highlights
  • Incline-aware calorie estimates
  • Vertical climb and distance tracking
  • Live heart rate and zones on Apple Watch
  • Weighted vest calorie contribution
  • Shareable climb cards
  • Treadmill calibration
Features
Read full description

TreadCal helps you understand your incline-treadmill and walking-pad workouts. Enter your treadmill’s speed and incline—or measure its stopped deck with your iPhone—then start your workout on Apple Watch. TreadCal combines your weight, grade, speed, optional weighted vest, and rail use to estimate active calories. MAKE EVERY CLIMB COUNT • Incline-aware active-calorie estimates • Vertical climb and approximate treadmill distance • Live heart rate and heart-rate zones on Apple Watch • Time spent in each heart-rate zone • Weighted-vest calorie contribution included in your total • Workout receipts with steps, duration, and workout settings • A shareable climb card for every workout; the artwork grows with the climb MEASURE YOUR TREADMILL Use two-position iPhone calibration to map your treadmill’s console setting to measured percent grade. Calibrate only while the belt is stopped. YOUR WORKOUT IS YOURS Apple Watch workouts require permission to write Workouts and Active Energy to Apple Health. Other Health read permissions and Motion permission are optional. TreadCal keeps your profile, calibration, and workout history on your devices. No account, ads, or analytics. TRY THREE WORKOUTS Your first three completed workouts are included. Unlock unlimited workouts with a single TreadCal Pro purchase. No subscription. TreadCal is an exercise estimator, not a medical device. Calories and heart-rate zones are estimates; distance depends on the speed you enter. Never place your iPhone on a moving treadmill belt. Heart-rate zone features require watchOS 27 and appropriate permissions.

Screenshots

Klemy4 screens
TreadCal4 screens

Verdict

The call

The clearest difference is rating: TreadCal at 5.0 against Klemy's 3.9. TreadCal also leads on iOS requirement (18.0 vs 26.0). Klemy's advantage is ratings volume (9 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Klemy sells 6 in-app purchases, starting at $4.99 per month and TreadCal sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

TreadCal holds the better App Store score, 5.0 against 3.9. That said, the two scores are not equally well evidenced: Klemy has 9 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Klemy ships an update every 4 days, TreadCal weekly. The most recent releases landed on October 30, 2026 and October 29, 2026 respectively.

Scorecard3 real differences · 7 level
Klemy versus TreadCal: the parameters behind the verdict, then further details
ParameterKlemyTreadCal
PriceFreeFree
Rating3.9 (9 ratings)5.0 (1 ratings) — better
Positive reviews50.0% of reviews—
Number of ratings9 — better1
Update frequencyEvery 4 days — betterWeekly
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, Apple Watch — betteriPhone, Apple Watch
Requires iOS26.018.0 — better
Further details — not scored
Size76 MB6 MB
Age rating4+4+
DeveloperVsevolod KlementjevCarbide Studios

Customer experience

Klemy

All ratings9 ratings
Positive77.8%
Neutral0.0%
Negative22.2%
Written reviews4 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

TreadCal

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

6 purchases

Klemy

Subscriptions4
  • Training Pass - Monthly$4.991 Month
  • Family Pass - Monthly$7.991 Month
  • Training Pass - Annual7 Days trial$24.991 Year
Show 1 more
  • Family Pass - Annual7 Days trial$39.991 Year
One-time2
  • Lifetime$79.99
  • Family Lifetime$119.99
1 purchases

TreadCal

One-time1
  • TreadCal Pro$3.99

Questions

Is Klemy free?
Klemy is free to download, with in-app purchases available.
Is TreadCal free?
TreadCal is free to download, with in-app purchases available.
Which has better reviews, Klemy or TreadCal?
TreadCal is rated higher. Klemy averages 3.9 out of 5 from 9 ratings, while TreadCal averages 5.0 from 1 ratings.
Do Klemy or TreadCal have ads?
Neither Klemy nor TreadCal shows ads.
Which is updated more often, Klemy or TreadCal?
Klemy ships an update every 4 days, and TreadCal weekly. Most recently, Klemy was updated on October 30, 2026 and TreadCal on October 29, 2026.

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