Comparison

DQS Mobile vs VO2 Max

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

Head to head
About

DQS Mobile

Calculate your daily Diet Quality Score (DQS) based on food consumption. Track your progress with graphs of DQS, weight, and body fat over time. Set personal goals for weight, body fat, and DQS.

Highlights
  • Calculate daily Diet Quality Score (DQS)
  • Log food servings by category
  • Track weight and body fat percentage
  • View progress graphs (DQS, weight, body fat)
  • Set target DQS, weight, and body fat
  • Save DQS data over time
Features
Read full description

This is the official Racing Weight Diet Quality Score App, now with the ability to save your DQS data for as long as you want and view graphs of your progress over time! This app allows you to calculate your daily Diet Quality Score (DQS) as described in Matt Fitzgerald's book, Racing Weight. The Diet Quality Score is a simple instrument that allows athletes to measure the overall quality of their diet. The DQS Mobile app was designed to make it as easy as possible to calculate a Diet Quality Score each day. As you eat throughout the day, enter the servings of each category of food that you consume. Tap a box to consume one serving of that category, tap it again and it will become a half serving, and one more tap will set it back to zero for that box. You can tap the category name to view an explanation of what foods fall under that category. Your total DQS score for the day is shown in the upper right corner of the page. DQS data is saved for each day you track it. You can also log your weight and body fat % on the bottom of the Tracking page. We recommend you log your weight no more than once per week. The Graphs page lets you see how you are doing with your Diet Quality Score over time. You can view your data over the last week, month or year. When viewing yearly data, it is displayed as 52 week-long averages. You can view graphs showing your total DQS, your weight, or your DQS score by specific category. You can set a target weight, body fat % and a target DQS score on the Profile page. SUBSCRIPTION INFORMATION: New users: Start with a 7-day free trial! - Monthly plan - flexible month-to-month access - Annual plan - significant savings for committed athletes Note: Users who previously purchased DQS Mobile maintain access to current features at no additional cost. Thank you for being an early supporter! Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Payment will be charged to your Apple account at confirmation of purchase after the free trial ends. Subscriptions may be managed and auto-renewal may be turned off by going to your Account Settings after purchase.

About

VO2 Max

Track your body's oxygen absorption at peak effort with detailed insights and performance estimates for running and cycling. Visualize trends, compare personal bests, and understand your cardio fitness level with a redesigned dashboard and Apple Watch integration.

Highlights
  • VO2 max estimation for running and cycling
  • Performance estimates (W/kg, FTP)
  • Redesigned dashboard with trends and personal bests
  • Interactive charts with customizable date ranges
  • Apple Watch complications and iPhone widgets
  • Cardio fitness level comparison by age and sex
Features
Read full description

VO₂ Max shows how much oxygen your body can absorb at peak effort. The redesigned dashboard puts the latest measurement, rolling averages, and your personal best in one view so you immediately see how training affects cardio fitness. ESTIMATES FOR RUN & BIKE - New tab turns VO₂ max + weight + power into W/kg and FTP estimates for running and cycling. - Compare modeled race times and power against your actual HealthKit FTP/power. NEW DASHBOARD - Trend cards highlight the 7-day average, any selected range, and your best value with percentage deltas. - The interactive chart responds to 1W, 2W, 1M, 3M, 1Y, or All filters and animates every new HealthKit reading. - Entry tiles list the test type, source, and timestamp so you can compare prediction and max-exercise tests. INSIGHTS & GUIDANCE - The info sheet matches your value with the correct age and sex bracket to explain whether it is poor, good, or superior. - Manual refresh, HealthKit warnings, and empty states keep permissions and sync issues obvious. - Trial countdown and subscription access stay a tap away. APPLE WATCH + WIDGETS - All complication families are supported, so your latest VO₂ max is available on every watch face. - iPhone Home Screen and Lock Screen widgets follow the dashboard range you selected. - The Widget Showcase walks you through pinning widgets or complications and previewing layouts. HOW VO₂ MAX IS CAPTURED 1. Wear Apple Watch for at least 24 hours, then record several Outdoor Walk, Outdoor Run, or Hiking workouts with heart rate and GPS. 2. Apple may need several qualifying workouts and passive measurements before the first VO₂ max estimate appears. 3. Give this app read access to Cardio Fitness (VO₂ Max) in Apple Health so the dashboard, widgets, and complications can display the data. Requires Apple Watch Series 3 or later. VO₂ Max makes it easy to see if your cardio fitness plan is working today, over the last weeks, and all time. Terms and conditions: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

DQS Mobile4 screens
VO2 Max3 screens

Verdict

The call

The clearest difference is review sentiment: DQS Mobile at 79% against VO2 Max's 27%. DQS Mobile also leads on rating (4.7 vs 3.8) and iOS requirement (15.0 vs 18.0). VO2 Max's advantage is monetization model (free with in-app purchases vs subscription) and ads (none vs shown). On price, ratings volume, in-app purchases 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. DQS Mobile sells 2 in-app purchases, starting at $2.99 per month and VO2 Max sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

DQS Mobile holds the better App Store score, 4.7 against 3.8. Both are backed by a comparable volume of ratings — 167 and 127 respectively. Written reviews point the same way: 79% of DQS Mobile's written reviews are positive against 27% of VO2 Max's.

UpkeepUpdate frequency

DQS Mobile ships an update every 2 months, VO2 Max every 10 days. The most recent releases landed on October 8, 2026 and October 12, 2026 respectively.

Scorecard6 real differences · 4 level
DQS Mobile versus VO2 Max: the parameters behind the verdict, then further details
ParameterDQS MobileVO2 Max
PriceFreeFree
Rating4.7 (167 ratings) — better3.8 (127 ratings)
Positive reviews79.3% of reviews — better26.6% of reviews
Number of ratings167 — better127
Update frequencyEvery 2 monthsEvery 10 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationSubscriptionFree with in-app purchases — better
DevicesiPhone, iPad, iPodiPhone, iPad, Apple Watch
Requires iOS15.0 — better18.0
Further details — not scored
Size45 MB10 MB
Age rating4+4+
DeveloperJackson Forge Studios LLCBernhard Hering

Customer experience

DQS Mobile

All ratings167 ratings
Positive94.0%
Neutral1.2%
Negative4.8%
Written reviews92 reviews
Positive79.3%
Neutral5.4%
Negative15.2%

VO2 Max

All ratings127 ratings
Positive68.5%
Neutral6.3%
Negative25.2%
Written reviews94 reviews
Positive26.6%
Neutral3.2%
Negative70.2%

Bugs and requests

DQS Mobile

Reported bugs

14 issues
  • App crashes on startup
  • Unable to add measurements without crashing
  • Day navigation broken without restart
  • Weight log only accepts body fat percentage
  • Password reset email not triggered
Show 9 more
  • Login failures after phone update
  • Food logging disabled after updates
  • RevenueCat configuration error on subscription screen
  • Slow dropdown selection wheels
  • App forgets current day
  • Data not saving properly
  • Weight profile changes randomly
  • Selection wheels malfunction
  • App resets data randomly

Requested features

20 requests
  • Separate logging by meal (breakfast, lunch, dinner, snack)
  • Notes or comments section for daily entries
  • Color-coding for different meals
  • Apple Health integration
  • Searchable food database with category suggestions
Show 15 more
  • Body fat percentage tracking and graphing
  • Lean mass measurement tracking
  • Meal planning ahead functionality
  • DQS score calculator within app
  • High quality to low quality food ratio metric
  • Flexible dietary mode switching (day-to-day)
  • Better support for vegetarian/vegan/omnivore flexibility
  • Metric system support (cm, kg)
  • Water intake tracking category
  • Training Peaks or Strava integration
  • Calendar view with daily DQS scores
  • Better serving size guidance
  • Clearer category explanations for eggs and legumes
  • Meal-specific scoring and feedback
  • Support for mixed dietary preferences (vegetarian + fish eater)

VO2 Max

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

DQS Mobile

Subscriptions2
  • DQS Pro Monthly7 Days trial$2.991 Month
  • DQS Pro Yearly$24.991 Year
3 purchases

VO2 Max

Subscriptions2
  • Monthly Subscription$2.991 Month
  • Yearly Subscription$22.991 Year
One-time1
  • Lifetime Access$79.99

Questions

Is DQS Mobile free?
DQS Mobile is free to download, with in-app purchases available.
Is VO2 Max free?
VO2 Max is free to download, with in-app purchases available.
Which has better reviews, DQS Mobile or VO2 Max?
DQS Mobile is rated higher. DQS Mobile averages 4.7 out of 5 from 167 ratings, while VO2 Max averages 3.8 from 127 ratings.
Do DQS Mobile or VO2 Max have ads?
DQS Mobile shows ads; VO2 Max does not.
Which is updated more often, DQS Mobile or VO2 Max?
DQS Mobile ships an update every 2 months, and VO2 Max every 10 days. Most recently, DQS Mobile was updated on October 8, 2026 and VO2 Max on October 12, 2026.

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