Comparison

Base Strength AI vs Coach OS

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

Head to head
About

Base Strength AI

This AI-powered fitness app delivers personalized strength training programs based on an expert's coaching methods. It adapts in real-time to your progress, offering an effective and affordable way to achieve your strength and size goals.

Highlights
  • AI-powered personalized training plans
  • Real-time program adjustments
  • Expert coaching style integration
  • Strength and size goal achievement
  • Affordable fitness experience
Features
Read full description

Take your training to another level with Alexander Bromley's distinctive coaching style powered by AI. Coach Bromley trained the AI to use his programming methods to create affordable, personalized, and highly effective training to help you reach your strength and size goals! Our A.I. Expert System Coaching Application will help users receive an individualized training experience that in real-time adjusts to the program. This platform's overall goal is to provide a totalized fitness experience at a fraction of the cost of 1-1 coaching. EvolveAI provides affordable expert coaching by uniting Alexander Bromley's coaching with AI to empower everyone to achieve their training goals. After taking the onboarding questionnaire you are required to set up a paid subscription before accessing the App, this unlocks the AI Strength Training features so you can get to work! The strength training uses Bromley's unique coaching style and programs to create a custom plan for your needs so you keep making progress toward your goals. Terms of use: https://www.basestrength.com/terms-of-use Health Disclaimer: https://www.basestrength.com/faqs Privacy Policy: https://www.basestrength.com/privacy-policy

About

Coach OS

This app provides a personalized strength training program that adapts weekly to your progress and goals. It eliminates guesswork with clear instructions and proven methods to help you build strength and muscle safely. Track your improvements and gain confidence in the gym with a plan that evolves with you.

Highlights
  • Personalized strength program
  • Weekly progress-based updates
  • Clear, simple workout instructions
  • Proven strength-building methods
  • Built-in progress tracker
Features
Read full description

Train smarter with a program built for you. Whether you’re new to lifting or getting back into it, you’ll get a clear, structured plan that’s easy to follow and actually works. Just set your goals and schedule, your program adjusts week by week to keep you progressing. No random workouts. No guesswork. What You Get: - A personalized strength program designed for steady progress - Weekly updates based on how you’re doing - Simple, clear instructions with no unnecessary fluff - Proven methods that build strength and muscle safely - Built-in tracker to see your improvements over time If you want to get stronger, build muscle, and feel confident in the gym, this coaching grows with you every week. Terms & Privacy https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ https://www.boostcamp.app/privacy-policy

Screenshots

Base Strength AI4 screens
Coach OS4 screens

Verdict

The call

The clearest difference is monetization model: Coach OS at free with in-app purchases against Base Strength AI's subscription. Coach OS also leads on review sentiment (67% vs 50%). On price, rating, ratings volume and update cadence 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. Base Strength AI sells 3 in-app purchases, starting at $24.99 per month and Coach OS sells 6 in-app purchases, starting at $19.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for Base Strength AI against 4.7 for Coach OS. Both are backed by a comparable volume of ratings — 146 and 82 respectively. Written reviews are what separate them: 50% of Base Strength AI's written reviews are positive against 67% of Coach OS's.

UpkeepUpdate frequency

Base Strength AI ships an update every 9 days, Coach OS fortnightly. The most recent releases landed on September 23, 2026 and September 16, 2026 respectively.

Scorecard2 real differences · 8 level
Base Strength AI versus Coach OS: the parameters behind the verdict, then further details
ParameterBase Strength AICoach OS
PriceFreeFree
Rating4.7 (146 ratings)4.7 (82 ratings)
Positive reviews50.0% of reviews66.7% of reviews — better
Number of ratings146 — better82
Update frequencyEvery 9 days — betterFortnightly
AdsNoNo
In-app purchasesYesYes
MonetizationSubscriptionFree with in-app purchases — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size171 MB79 MB
Age rating4++12
DeveloperSkynet Coaching Inc.BPM Health Co.

Customer experience

Base Strength AI

All ratings146 ratings
Positive93.8%
Neutral3.4%
Negative2.7%
Written reviews12 reviews
Positive50.0%
Neutral16.7%
Negative33.3%

Coach OS

All ratings82 ratings
Positive93.9%
Neutral0.0%
Negative6.1%
Written reviews15 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

In-app purchases

3 purchases

Base Strength AI

Subscriptions3
  • BASE Strength3 Days trial$24.991 Month
  • Base Strength App3 Days trial$64.993 Months
  • Base Strength App3 Days trial$229.991 Year
6 purchases

Coach OS

Subscriptions6
  • Coach OS Subscription$19.991 Month
  • Coach OS Subscription$29.991 Month
  • Atlas Subscription7 Days trial$39.991 Month
Show 3 more
  • Coach OS Subscription$139.991 Year
  • Coach OS Subscription$199.991 Year
  • Atlas Subscription$299.991 Year

Questions

Is Base Strength AI free?
Base Strength AI is free to download, with in-app purchases available.
Is Coach OS free?
Coach OS is free to download, with in-app purchases available.
Which has better reviews, Base Strength AI or Coach OS?
Base Strength AI and Coach OS are both rated 4.7 out of 5 on the App Store, from 146 and 82 ratings respectively.
Do Base Strength AI or Coach OS have ads?
Neither Base Strength AI nor Coach OS shows ads.
Which is updated more often, Base Strength AI or Coach OS?
Base Strength AI ships an update every 9 days, and Coach OS fortnightly. Most recently, Base Strength AI was updated on September 23, 2026 and Coach OS on September 16, 2026.

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