True VO2 Max — Cardio Fitness

Name: True VO2 Max — Cardio Fitness
Rating: 3.9 (7 reviews)
Author: DANIEL BLACKBURN

By: DANIEL BLACKBURN

Indoor & Lab-like Vo2 Tracking

Features & Capabilities

True VO2 Max gives you lab-like cardio fitness insights using your Apple Watch — now indoors too.

Stop getting misleading VO₂ max drops from heat, humidity, altitude, smog, or tough outdoor conditions. We correct for real-world factors so you can trust your fitness trend. And with our first-of-its-kind Indoor Treadmill VO₂ Max, you can track cardio fitness even when you run inside.

No account required. No ads.

▷ INDOOR TREADMILL VO₂ MAX

Estimate VO₂ max from indoor treadmill runs
Perfect for winter, rain, or night runs
See indoor fitness changes clearly — without outdoor weather noise

▷ CORRECTED VO₂, ANY WEATHER

Removes temperature, humidity, altitude, heat, cold, etc.
Raw vs Corrected shown side-by-side
Trust the trend, not the temperature

▷ SCIENCE-BACKED CORRECTIONS

Research-based penalties for weather & elevation
Transparent impact per condition
Spot real changes vs. bad weather

▷ IMPACT RESULTS

Automatic processing the moment you finish your workout
Be first to see your real fitness trend — no more confusion
See progress even when conditions make it look worse

▷ AUTOMATIONS

Apple Watch sync
Health app sync
VO2 corrections, no manual input needed

▷ WHAT'S FREE?

No ads
Unlimited runs/workouts
Corrected VO₂ max vs. weather
Raw Apple Watch VO₂ max vs. Corrected VO₂ max
Weather logging
Record your activities
Basic insights about your performance

▷ WHAT'S PLUS?

Indoor Treadmill Watch app
Instant weather capture as soon as you finish your workout
Most accurate VO2 max correction every time
Clear & transparent impact per weather condition
Improve your VO₂ max with Full Insights
Personalized performance takeaways
And more

Try Plus free for 7 days. Cancel anytime.

▷ PRIVACY

No account needed
No tracking
No ads
No personal data collected
No third-party SDKs
All logged info (runs, corrected VO2 max, etc.) remains on-device

Not a medical device. True VO2 Max is for fitness and wellness only.

User Growth & Download Statistics

App

By:

DANIEL BLACKBURN

Rating:

3.90

(7) 0.20

Version:

2.1 Last updated: 2026-05-17

Version code:

884112085

Creation date:

2025-10-22

Compatible devices:

Size:

16.49MB

URLs:

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-06-12

Compare stats and ranking:

Ranking

# 481,810 ▲ 41,258

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.

Developed by:

DANIEL BLACKBURN

Apple Apps Store

https://apps.apple.com/us/app/true-vo2-max-cardio-fitness/id6751441781

User Reviews

The app doesn’t see indoor workouts even with a paid membership, it’s simple won’t take into account count your treadmill runs. This app should be free until everything is fixed and works as advertised.

by US*****, 2026-05-29

It’s amazing that it factors in elevation and temperature during the run. Easy to use and set up!

by Ma*****, 2026-04-17

03.27 update: Psst! Fahrenheit vs Celsius option, please // Original: … too rudimentary. (1) Out on a run; aborted 5 minutes in. Deleted it from Health; that deletion flowed thru to all but this & 1 other app. (2) That other app has the standard delete feature, so I could remove the related data point. This app does not. (3) No *list* presenting the *dated* VO2Max readings. Instead, a chart, so you’re forced to play Tap City (tap dot to get specifics), repeatedly, to pull that history. // Thankfully, I chose the monthly sub so I could inspect the entirety of the app. Result: canceled about 9 days in. Dev, great idea! Respectfully, you’ve missed too many basics. Please → tweak, polish, and indulge user testing. Then, you’d OWN the VO2Max space! (Still) Rooting for ya