Comparison

StrengthLog vs C

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

Head to head
About

StrengthLog

Track your workouts, analyze progress, and discover proven strength training programs. Log unlimited workouts, access a vast exercise library, and set goals. Upgrade for advanced statistics and premium programs.

Highlights
  • Unlimited workout logging
  • Extensive exercise library with video instructions
  • Proven strength training programs
  • Progress analysis and statistics
  • Goal setting and streak tracking
  • Plate calculator and rest timer
  • Apple Health integration
Features
Read full description

THE WORLD’S MOST GENEROUS WORKOUT TRACKER StrengthLog is the workout tracker for people who take their training seriously, whether you’re just getting started or have been lifting for decades. Plan your training. Log every set. Track your progress. Follow proven training programs or build your own. Compare your strength with other lifters. Set goals, build streaks, and challenge your friends. And unlike many workout apps, StrengthLog gives you everything you need to train effectively for free. Unlimited workout logging. No ads. No trial that suddenly locks you out. 100% gains, 0% ads. BUILT FOR LIFTERS, BY LIFTERS StrengthLog has been developed together with hundreds of thousands of lifters, from beginners to competitive strength athletes. Our library contains 600+ strength, cardio, and mobility exercises with instructions and videos. You can also create your own exercises. Log as you train or plan ahead with our calendar. Follow a ready-made training program, build your own, or simply decide what to do when you get to the gym. Your training history, PRs, statistics, and Strength Levels make it easy to see where you’ve been and where you’re going. TRAIN TOGETHER Connect with friends and make your training a little more social. See when your friends train, celebrate their progress, compare PRs and Strength Levels, and create or join challenges together. Challenge each other to train more often, do more reps, or reach whatever ridiculous goal you can come up with. You choose who you connect with, and your full training log stays private. FREE FEATURES • Log unlimited workouts, forever. • Support for both kg and lbs. • 600+ exercises with instructions and videos. • Create unlimited custom exercises. • Follow popular workouts and training programs. • Build your own routines and programs with linear progression. • Plan workouts and programs in your training calendar. • Track PRs and exercise history. • Compare your strength with other lifters using Strength Levels. • Track training volume, workouts, and other statistics. • Create training goals and streaks. • Complete our monthly challenges. • Connect with friends and challenge each other. • Use our rest timer and plate calculator. • Estimate your 1RM and get suggested PR warm-ups. • Track body measurements and progress pictures. • Connect with Apple Health. GO PREMIUM StrengthLog Premium unlocks our most advanced tools while supporting the continued development of the app. Premium includes: • Build unlimited training routines and programs with double and triple progression. • Our complete library of training programs for strength, bodybuilding, powerlifting, powerbuilding, sports, and more. • Advanced statistics for your training, muscle groups, and exercises. • Muscle heat maps showing what you’ve trained over any period. • Customizable favorite graphs. • Advanced logging with RPE, Reps in Reserve, % of 1RM, and quick set stats. • More tools for analyzing and planning your training. • Unlimited goals and streaks. • Connect your account to ChatGPT or Claude using our MCP integration. Whether you want a simple workout log or enough training data to disappear down a statistical rabbit hole for an entire evening, StrengthLog has you covered. Have an idea, found a bug, or just want to tell us what you think? Contact us at app@strengthlog.com. SUBSCRIPTIONS StrengthLog Premium is an automatically renewing subscription. • Choose between 1, 3, and 12 months. • Your App Store account will be charged upon purchase and your subscription will renew automatically unless canceled at least 24 hours before the end of the current period. • You can manage or turn off auto-renewal in your App Store account settings. APPLE HEALTH With your permission, StrengthLog can read relevant data from Apple Health and share your completed workouts with it. You control what data StrengthLog can read or write through your Apple Health permissions.

About

C

Features
Read full description

Most fitness apps take your word for it. C-Rex does not. C-Rex is a GPS-verified gym and workout tracker that turns showing up into real progress. Every check-in is tied to the gym you are actually visiting. Build streaks, earn XP, compete on monthly gym leaderboards and train with people around you. SHOW UP AND MAKE IT COUNT Check in when you arrive at the gym. C-Rex uses GPS to verify that you are actually there. Build a streak based on real gym sessions, not good intentions. Earn XP and climb your gym’s monthly leaderboard. Join challenges and earn rewards when you complete them. TRAIN WITH YOUR PEOPLE Follow friends and see who is training right now. View your friends’ workout activity in one feed. Create or join groups with your training partners. Take on group challenges together. Message the people you train with without leaving the app. LOG EVERY WORKOUT Track exercises, sets, reps, weight, duration and cardio. Choose from a database of 500+ exercises. See a weekly muscle map showing what you have trained. Identify the muscle groups you keep neglecting. Select the muscles you want to work and build a session around them. Use the rest timer while you train. Keep your timer visible on your Lock Screen with Live Activities. FIND YOUR GYM COMMUNITY Discover gyms near you on the map. See who is training at nearby gyms. Find gym buddies who match your training lifestyle. Share workouts, progress and achievements with the community. C-REX PREMIUM Upgrade to Premium for: Progress charts over time Private progress comparisons with friends The ability to see who viewed your profile Custom name colours and emojis GIFs in group chats Streak Shield protection C-Rex’s core features — including gym check-ins, workout logging, streaks, XP, social features, challenges and chat — are available for free. Premium is available as a monthly or yearly subscription. Subscriptions automatically renew unless cancelled at least 24 hours before the current billing period ends. Payment is charged to your Apple Account upon confirmation of purchase. You can manage or cancel your subscription through your Apple Account settings after purchase. Privacy Policy: https://gym-app-ce4a9.web.app/privacy Terms of Service: https://gym-app-ce4a9.web.app/terms

Screenshots

StrengthLog4 screens
C4 screens

Verdict

The call

The clearest difference is ratings volume: StrengthLog at 3.7K against C's 5. StrengthLog also leads on device support (4 vs 1). C's advantage is review sentiment (100% vs 88%). On price, rating, update cadence and ads 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. StrengthLog sells 3 in-app purchases, starting at $16.90 per month and C sells 2 in-app purchases, starting at $4.99 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 — 4.9 for StrengthLog against 5.0 for C. That said, the two scores are not equally well evidenced: StrengthLog has 3.7K ratings behind it against 5, so its average is the more settled of the two. Written reviews are what separate them: 88% of StrengthLog's written reviews are positive against 100% of C's.

UpkeepUpdate frequency

StrengthLog ships an update every 6 days, C every 5 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 7 level
StrengthLog versus C: the parameters behind the verdict, then further details
ParameterStrengthLogC
PriceFreeFree
Rating4.9 (3.7K ratings)5.0 (5 ratings) — better
Positive reviews88.0% of reviews100.0% of reviews — better
Number of ratings3.7K — better5
Update frequencyEvery 6 daysEvery 5 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone
Requires iOS15.0 — better16.0
Further details — not scored
Size158 MB125 MB
Age rating12+12+
DeveloperStyrkelabbet ABJerry Kwong

Customer experience

StrengthLog

All ratings3,695 ratings
Positive97.5%
Neutral1.3%
Negative1.2%
Written reviews393 reviews
Positive88.0%
Neutral4.3%
Negative7.6%

C

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

StrengthLog

Reported bugs

3 issues
  • Disappearing workout data
  • Inability to clear/reset workout history
  • Inconsistent behavior when planning workouts for the same day

Requested features

4 requests
  • Ability to save and edit custom workout plans
  • Seamless integration with Apple Health
  • Community features like challenges and leaderboards
  • More personalized workout recommendations

C

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

StrengthLog

Subscriptions3
  • StrengthLog Premium - 1 month14 Days trial$16.901 Month
  • StrengthLog Premium - 3 months14 Days trial$37.903 Months
  • StrengthLog Premium - 1 year14 Days trial$109.001 Year
2 purchases

C

Subscriptions2
  • C-Rex Monthly Subscription$4.991 Month
  • C-Rex Yearly Subscription$49.991 Year

Questions

Is StrengthLog free?
StrengthLog is free to download, with in-app purchases available.
Is C free?
C is free to download, with in-app purchases available.
Which has better reviews, StrengthLog or C?
C is rated higher. StrengthLog averages 4.9 out of 5 from 3.7K ratings, while C averages 5.0 from 5 ratings.
Do StrengthLog or C have ads?
Neither StrengthLog nor C shows ads.
Which is updated more often, StrengthLog or C?
StrengthLog ships an update every 6 days, and C every 5 days. Most recently, StrengthLog was updated on October 25, 2026 and C on October 24, 2026.

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