Comparison

Relentless Trainer vs ENDUROX

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

Head to head
About

Relentless Trainer

This AI-powered coach creates daily personalized workouts for various fitness disciplines, adapting to your current state and history. It offers nutrition plans, extensive exercise libraries with videos, and flexible training options. Track progress and integrate with health apps and smart devices for a comprehensive fitness experience.

Highlights
  • AI-powered personalized workouts
  • Nutrition program
  • 1200+ exercises with videos
  • Flexible training options
  • Integration with health apps
  • Specialized training tracks
Features
Read full description

Relentless Trainer: Your AI-Powered Personal Coach Born from the CrossFit® community and backed by over 10 years of data, we present Relentless Trainer - the first AI trainer for CrossFit®, Weightlifting, Gymnastics, Strength Training, Endurance sports, Mobility, Hyrox, Bodybuilding, Hybrid training, ATHX and Calisthenics. Race-optimized goal engine for Running, Skiing, Biking and Rowing. We even have Tactical Fitness, a specialized track for military and rescue staff. Forget generic training programs. Relentless Trainer adapts your workout daily based on: Your current state Your fitness level Your recent training history Your strengths and weaknesses Features: Nutrition program for weight loss or muscle mass Personalized workouts Over 1200 exercises with descriptions and videos Flexible training time and equipment Specialized training tracks Integration with health apps and smart devices Whether you want to improve your Snatch, Squat, Bench press, rowing, running, pull-ups, or muscle-ups, the trainer has you covered. Relentless Trainer is a month-to-month subscription service, easily cancellable anytime. No long-term contracts or cancellation fees - we just want you to love training! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

ENDUROX

Features
Read full description

ENDUROX – Science of Strength. Expert in Endurance. Training designed to meet you at your level – and take you to the next. ENDUROX is your ultimate HYROX coaching, combining cutting-edge sport science with real-world coaching experience from world leaders Dr Dan Plews and Dr Adam Storey. Whether you're chasing your first HYROX finish or eyeing the podium, ENDUROX provides personalized, structured programming that adapts to your current fitness and goals — helping you train smarter, recover faster, and perform better.

Screenshots

Relentless Trainer4 screens
ENDUROX3 screens

Verdict

The call

The clearest difference is in-app purchases: ENDUROX at none against Relentless Trainer's 9. ENDUROX also leads on iOS requirement (13.0 vs 16.6). Relentless Trainer's advantage is update cadence (every 5 days vs monthly). On price, 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. Relentless Trainer sells 9 in-app purchases, starting at $9.99 per month. ENDUROX asks for nothing beyond the download.

UpkeepUpdate frequency

Relentless Trainer ships an update every 5 days, ENDUROX monthly. The most recent releases landed on September 25, 2026 and September 12, 2026 respectively.

Scorecard3 real differences · 7 level
Relentless Trainer versus ENDUROX: the parameters behind the verdict, then further details
ParameterRelentless TrainerENDUROX
PriceFreeFree
Rating4.9 (15 ratings) — better—
Positive reviews60.0% of reviews—
Number of ratings15 — better—
Update frequencyEvery 5 days — betterMonthly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, Apple WatchiPhone, iPad, iPod — better
Requires iOS16.613.0 — better
Further details — not scored
Size218 MB57 MB
Age rating4+4+
DeveloperRelentless Method ABTilt Software Limited

In-app purchases

9 purchases

Relentless Trainer

Subscriptions9
  • Dash Monthly Subscription14 Days trial$9.991 Month
  • Core Monthly Subscription14 Days trial$17.991 Month
  • Monthly14 Days trial$23.991 Month
Show 6 more
  • Dash Quarterly Subscription14 Days trial$23.993 Months
  • Core Quarterly Subscription14 Days trial$44.993 Months
  • Quarterly14 Days trial$59.993 Months
  • Dash Yearly Subscription14 Days trial$79.991 Year
  • Core Yearly Subscription14 Days trial$149.991 Year
  • Yearly14 Days trial$195.991 Year
None

ENDUROX

No in-app purchases

Questions

Is Relentless Trainer free?
Relentless Trainer is free to download, with in-app purchases available.
Is ENDUROX free?
ENDUROX is free to download, with no in-app purchases.
Do Relentless Trainer or ENDUROX have ads?
Neither Relentless Trainer nor ENDUROX shows ads.
Which is updated more often, Relentless Trainer or ENDUROX?
Relentless Trainer ships an update every 5 days, and ENDUROX monthly. Most recently, Relentless Trainer was updated on September 25, 2026 and ENDUROX on September 12, 2026.

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