Comparison

VDOT Running Calculator vs COROS

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

Head to head
About

VDOT Running Calculator

This app helps runners and coaches calculate training paces, equate race performances, and adjust for environmental factors. Based on decades of scientific research, it provides a VDOT score to measure running ability and compare performances across different distances.

Highlights
  • Calculate time, distance, and race paces
  • Determine current training paces
  • Equate race performances across distances
  • Adjust paces for heat and altitude
  • Measure running ability with VDOT score
Features
Read full description

The official VDOT Running Calculator, designed by Dr. Jack Daniels - named World's Best Running Coach by Runner's World Magazine - and the team at VDOT O2. Thanks to over 50 years of scientific research conducted by legendary coach Dr. Jack Daniels, runners and coaches can quickly determine appropriate training paces, equate race performances and adjust for heat and altitude. Features: • Calculate time, distance and race paces • Calculate your current training paces • Calculate and compare the equivalent performances of a race result at other distances • Calculate the effect of temperature or altitude on training and race paces What's Your VDOT? VDOT is a measure of your current running ability. It assigns a score to all running performances, let's you determine your current training paces, and equates a race time in one distance to another. For instance, you can compare your VDOT score from a recent 5k result to a friend's score who just ran a half marathon. Who won? What VDOT Level Have You Reached? Input a race result or estimated performance and learn what score it reaches on the VDOT scale. Enter all your past performances to see which race result scores the highest. There are 10 levels starting at Beginner - White (Female: 34.3, Male: 36.8) all the way up to Professional - Gold (Female: 71, Male: 80).

About

COROS

Enhance your fitness journey with detailed daily data, activity summaries, and advanced navigation tools. Customize your devices, download training plans, and seamlessly sync with popular third-party health platforms.

Highlights
  • Daily data tracking (sleep, steps, calories)
  • Activity summaries for all sports
  • Map and route management
  • Device and personal settings customization
  • Third-party app integration
Features
Read full description

The COROS app is your tool to help improve your fitness, download training plans, navigate with confidence, customize your devices, and more. The app will help you to track, and view: - Daily Data such as Sleep, Steps, Calories and more - Activity Summaries for all sports recorded on your watch - The Explore Page to manage maps, routes, and saved locations - Profile Page to customize your watch and personal settings - Connect and sync to 3rd party apps like Apple HealthKit, Google Health Connect, Strava, and more Note: - Sync steps, heart rate and other data to Apple devices using HealthKit - Continuous background use of GPS can decrease battery life

Screenshots

VDOT Running Calculator4 screens
COROS4 screens

Verdict

The call

The clearest difference is rating: VDOT Running Calculator at 4.9 against COROS's 4.3. VDOT Running Calculator also leads on review sentiment (74% vs 54%). COROS's advantage is in-app purchases (none vs 2) and update cadence (every 2 weeks vs every 4 months). On price, ratings volume, ads and device support 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. VDOT Running Calculator sells 1 one-off in-app purchase. COROS asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

VDOT Running Calculator holds the better App Store score, 4.9 against 4.3. Both are backed by a comparable volume of ratings — 1.6K and 797 respectively. Written reviews point the same way: 74% of VDOT Running Calculator's written reviews are positive against 54% of COROS's.

UpkeepUpdate frequency

VDOT Running Calculator ships an update every 4 months, COROS every 2 weeks. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.

Scorecard5 real differences · 5 level
VDOT Running Calculator versus COROS: the parameters behind the verdict, then further details
ParameterVDOT Running CalculatorCOROS
PriceFreeFree
Rating4.9 (1.6K ratings) — better4.3 (797 ratings)
Positive reviews73.8% of reviews — better54.2% of reviews
Number of ratings1.6K — better797
Update frequencyEvery 4 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.014.0 — better
Further details — not scored
Size38 MB856 MB
Age rating4+4+
DeveloperThe Run SMART Project, LLCCOROS Wearables Inc.

Customer experience

VDOT Running Calculator

All ratings1,581 ratings
Positive97.6%
Neutral0.9%
Negative1.5%
Written reviews65 reviews
Positive73.8%
Neutral7.7%
Negative18.5%

COROS

All ratings796 ratings
Positive80.3%
Neutral6.3%
Negative13.4%
Written reviews782 reviews
Positive54.2%
Neutral13.6%
Negative32.2%

User reviews

VDOT Running Calculator

From 1.6K App Store ratings

What we love

  • 🚀 Great tool
  • 👍 Simplicity of use
  • 👍 Extremely helpful
  • 👍 Does its job well
  • 👍 Good calculator

Room to improve

  • 🐛 Crashes
  • 🐛 Limits calculations without premium
  • 🐛 Doesn't remember previous data
  • 🐛 Bugs with custom distances
  • 🐛 Can't see definitions

COROS

From 797 App Store ratings

What we love

  • 🚀 Excellent battery life
  • 👍 Intuitive and easy to use app
  • 🚀 Quick sync with watch
  • 👍 Detailed data and metrics
  • 👍 Responsive customer service

Room to improve

  • 🐛 Connectivity issues with watch
  • 🐛 Inaccurate heart rate tracking
  • 🐛 Syncing problems with third-party apps
  • 🐛 Buggy after recent updates
  • 🐛 Confusing user interface changes

Bugs and requests

VDOT Running Calculator

Reported bugs

3 issues
  • Crashes when upgrading to premium
  • Can't scroll beyond 200/400m results
  • Custom distance doesn't support metric

Requested features

4 requests
  • Expand time field to support ultras
  • Add 6k and 8k distances
  • Allow inputting VDOT score directly
  • Allow typing in times instead of scrolling

COROS

Reported bugs

5 issues
  • App crashes frequently
  • Inability to log in or sync data
  • Inconsistent data between watch and app
  • Elevation/GPS tracking issues
  • Strength training mode not working properly

Requested features

5 requests
  • Add more watch face options
  • Improve sleep tracking accuracy
  • Integrate with Apple Health app
  • Add ability to edit/delete activities
  • Provide more customization options

In-app purchases

1 purchases

VDOT Running Calculator

One-time1
  • VDOT Calculator Premium2 variants$8.99
None

COROS

No in-app purchases

Questions

Is VDOT Running Calculator free?
VDOT Running Calculator is free to download, with in-app purchases available.
Is COROS free?
COROS is free to download, with no in-app purchases.
Which has better reviews, VDOT Running Calculator or COROS?
VDOT Running Calculator is rated higher. VDOT Running Calculator averages 4.9 out of 5 from 1.6K ratings, while COROS averages 4.3 from 797 ratings.
Do VDOT Running Calculator or COROS have ads?
Neither VDOT Running Calculator nor COROS shows ads.
Which is updated more often, VDOT Running Calculator or COROS?
VDOT Running Calculator ships an update every 4 months, and COROS every 2 weeks. Most recently, VDOT Running Calculator was updated on October 26, 2026 and COROS on October 27, 2026.

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