Comparison

SmartBarbell by JuggernautAI vs Relentless Running

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

Head to head
About

SmartBarbell by JuggernautAI

This app uses your phone's camera and machine learning to track barbell velocity during lifts, providing objective data to improve your training. It analyzes key lifts like squats and deadlifts, offering insights into bar path and perceived exertion.

Highlights
  • Camera velocity tracking
  • Bar path analysis
  • Objective RPE measurement
  • Track major lifts (Squat, Bench, Deadlift, OHP)
  • Video upload and analysis
  • Integration with JuggernautAI App
Features
Read full description

Train. Measure. Improve. We are excited to add SmartBarbell to the Juggernaut Apps family. SmartBarbell brings powerful velocity tracking technology right to your phone. Normally velocity tracking devices costs several hundred dollars and are cumbersome to setup and use, not anymore! SmartBarbell uses your iPhone Camera to capture this valuable information and machine learning technology to analyze it. SmartBarbell is free for JuggernautAI users and just $4.99/month for non-JuggernautAI users. Pricing in USD for US based users, actual pricing may vary depending on location. The SmartBarbell App will give you powerful data about your lifting to help improve your training. -Measure and track bar velocity for Squat, Bench Press, Deadlift and Overhead Press variations. -Measure horizontal bar drift to help ensure better bar path. -Utilize velocity data to give a more objective measure of Rate of Perceived Exertion (RPE). -Enhance your training in the JuggernautAI App with more powerful data. SmartBarbell allows you to upload a video of your lifts and record them directly in the app, then it will quickly analyze your lift and provide you the important data to improve your training. ———- ABOUT JUGGERNAUT TRAINING SYSTEMS Juggernaut Training Systems is The Leader in Strength, having helped thousands of athletes from beginners to World Champions maximize their results and reach their goals. We deliver principle-based coaching through cutting-edge technology to help you get the best results of your life. Privacy Policy: https://www.jtsstrength.com/app-privacy-policy/ Terms of Use: https://www.jtsstrength.com/app-terms-of-use/

About

Relentless Running

Features
Read full description

Relentless Running puts a knowledgeable running coach in your pocket. Build a personal running plan around your current fitness, schedule, experience and race goals. Your plan adapts as you train, helping you stay consistent without losing sight of the bigger goal. Features: • Personal running plans • Race goals and race-specific planning included • Easy, tempo, threshold, interval, long, fartlek and free runs • Pace and heart-rate zones • Running tests and personal records • Activity history and performance insights • Connect supported fitness services Start with a 7-day free trial, then choose a monthly or annual subscription. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. You can manage or cancel your subscription in your App Store account settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://running.relentlessmethod.com/privacy-policy/

Screenshots

SmartBarbell by JuggernautAI4 screens
Relentless Running4 screens

Verdict

The call

The clearest difference is update cadence: SmartBarbell by JuggernautAI at every 6 days against Relentless Running's fortnightly. On price, ads, 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. SmartBarbell by JuggernautAI sells 1 in-app purchase, starting at $4.99 per month and Relentless Running sells 2 in-app purchases, starting at $14.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

SmartBarbell by JuggernautAI ships an update every 6 days, Relentless Running fortnightly. The most recent releases landed on October 30, 2026 and October 29, 2026 respectively.

Scorecard1 real difference · 9 level
SmartBarbell by JuggernautAI versus Relentless Running: the parameters behind the verdict, then further details
ParameterSmartBarbell by JuggernautAIRelentless Running
PriceFreeFree
Rating4.6 (7 ratings) — better—
Positive reviews83.3% of reviews—
Number of ratings7 — better—
Update frequencyEvery 6 days — betterFortnightly
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPod — betteriPhone
Requires iOS15.0 — better16.6
Further details — not scored
Size62 MB223 MB
Age rating17+4+
DeveloperJuggernaut AppsRelentless Method AB

In-app purchases

1 purchases

SmartBarbell by JuggernautAI

Subscriptions1
  • SmartBarbell Monthly$4.991 Month
2 purchases

Relentless Running

Subscriptions2
  • Relentless Running Monthly7 Days trial$14.991 Month
  • Relentless Running Annual7 Days trial$99.991 Year

Questions

Is SmartBarbell by JuggernautAI free?
SmartBarbell by JuggernautAI is free to download, with in-app purchases available.
Is Relentless Running free?
Relentless Running is free to download, with in-app purchases available.
Do SmartBarbell by JuggernautAI or Relentless Running have ads?
Neither SmartBarbell by JuggernautAI nor Relentless Running shows ads.
Which is updated more often, SmartBarbell by JuggernautAI or Relentless Running?
SmartBarbell by JuggernautAI ships an update every 6 days, and Relentless Running fortnightly. Most recently, SmartBarbell by JuggernautAI was updated on October 30, 2026 and Relentless Running on October 29, 2026.

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