Comparison

Sensor Bio vs Dirt Factor

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

Head to head
About

Sensor Bio

This platform uses biosensors to remotely monitor key health metrics like heart rate, HRV, and sleep stages. It provides personalized insights and is designed for general fitness and wellness purposes.

Highlights
  • Clinical-grade biometrics (heart rate, HRV, respiratory rate)
  • Detailed sleep tracking (stages, biometrics, movement)
  • Remote monitoring functionality
  • Personalized health insights
  • Validated biosensor technology
Features
Read full description

Sensor Bio is a biosensor-based remote monitoring platform. FEATURES • Validated clinical-grade biometrics include heart rate, heart rate variability (HRV), respiratory rate, and more. • Critically acclaimed sleep tracking. Sleep stages (awake, light, deep, REM), biometrics (HR, HRV, resp. rate), arm movement, and more! • Remote monitoring functionality to help organizations to monitor biometrics and user adherence effortlessly. • Personalized Insights tailored for each individual. • and more! CONNECT WITH US Online - https://sensorbio.com Read more about our terms of use here: https://sensorbio.com/terms-conditions/ Read more about our privacy policy here: https://sensorbio.com/privacy-center/ Disclaimers: Sensor Bio wearables are not medical devices and are meant only for general fitness/wellness purposes. Statements made in the Sensor Bio app are not medical advice. Consult with a doctor before making any medical decisions using data collected using the Sensor Bio platform.

About

Dirt Factor

Features
Read full description

Your race. Your fitness. Your training plan. Training for Leadville, Unbound, or your first gravel or mountain bike race? Dirt Factor analyzes the demands of your goal race, compares them with your current fitness, and builds a personalized training plan to help you get ready. Stop guessing. Start training with a purpose. NEEDED VS. CURRENT Pick a race and a goal: a finish time, or a place in your age group from past results. Dirt Factor models every climb, descent and surface on the course and gives you one honest answer: the power your goal takes against the power you have now. WHERE IS THE GAP? See the watts each climb and section takes, compared with your own race file. Know whether it's the climbs, the descents or the last three hours. BUILT FOR DIRT - Surface by segment, from pavement and gravel road to rough singletrack - A 1-5 technical trail scale: rough trail sets its own speed, whatever your watts - Altitude: the same watts feel harder at race elevation than where you train - Your descending, cornering and pacing, learned from your race files A PLAN BUILT BACK FROM RACE DAY - Blocks that work one intensity at a time, with your biggest gap as the training focus - Fits your riding days, hours, and indoor or outdoor riding - Race rehearsals before the big day, then a real taper - Every session explained: when to use it, how it feels and why it's in your plan - Targets in power, heart rate and feel, with trainer files to export CONNECTIONS Bring in your FTP, power curve and recent riding from Intervals.icu, Strava or Wahoo, and send your sessions to Intervals.icu or your Wahoo ELEMNT. Featured races include Big Sugar, Mid South, Unbound, SBT GRVL, Leadville and more, or upload your own course GPX. DIRT FACTOR PREMIUM The free version gives you one race goal and the first two weeks of a plan. Premium adds unlimited race goals with pacing, gap and section targets, custom training plans through race day, your race files and riding style in every plan, and workouts sent to Intervals.icu or your Wahoo. Premium is an auto-renewing monthly or yearly subscription with a free trial. Payment is charged to your Apple Account, and it renews automatically unless cancelled at least 24 hours before the end of the period. Manage or cancel in your App Store account settings. Terms of Use: https://dirtfactor.app/terms/ Privacy Policy: https://dirtfactor.app/privacy/

Screenshots

Sensor Bio4 screens
Dirt Factor4 screens

Verdict

The call

The clearest difference is in-app purchases: Sensor Bio at none against Dirt Factor's 2. Sensor Bio also leads on ratings volume (10 vs 2). Dirt Factor's advantage is update cadence (every 2 days vs weekly) and iOS requirement (15.0 vs 18.0). On price, rating, 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. Dirt Factor sells 2 in-app purchases, starting at $12.00 per month. Sensor Bio asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Sensor Bio against 5.0 for Dirt Factor. That said, the two scores are not equally well evidenced: Sensor Bio has 10 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

Sensor Bio ships an update weekly, Dirt Factor every 2 days. The most recent releases landed on November 12, 2026 and November 13, 2026 respectively.

Scorecard4 real differences · 6 level
Sensor Bio versus Dirt Factor: the parameters behind the verdict, then further details
ParameterSensor BioDirt Factor
PriceFreeFree
Rating5.0 (10 ratings)5.0 (2 ratings)
Positive reviews—100.0% of reviews
Number of ratings10 — better2
Update frequencyWeeklyEvery 2 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.015.0 — better
Further details — not scored
Size166 MB28 MB
Age rating4+17+
DeveloperSensr Biotech, LLCKaizen Endurance

Customer experience

Sensor Bio

All ratings10 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Dirt Factor

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Sensor Bio

No in-app purchases

2 purchases

Dirt Factor

Subscriptions2
  • Dirt Factor Premium Monthly7 Days trial$12.001 Month
  • Dirt Factor Premium Yearly7 Days trial$99.001 Year

Questions

Is Sensor Bio free?
Sensor Bio is free to download, with no in-app purchases.
Is Dirt Factor free?
Dirt Factor is free to download, with in-app purchases available.
Which has better reviews, Sensor Bio or Dirt Factor?
Sensor Bio and Dirt Factor are both rated 5.0 out of 5 on the App Store, from 10 and 2 ratings respectively.
Do Sensor Bio or Dirt Factor have ads?
Neither Sensor Bio nor Dirt Factor shows ads.
Which is updated more often, Sensor Bio or Dirt Factor?
Sensor Bio ships an update weekly, and Dirt Factor every 2 days. Most recently, Sensor Bio was updated on November 12, 2026 and Dirt Factor on November 13, 2026.

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