Comparison

S2 vs Strongify

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

Head to head
About

S2

This app helps you track and visualize your gym workout progress, encouraging progressive overload for weight loss or muscle gain. It offers a fast, intuitive interface with over 1000 exercises and a unique muscle fatigue heat map. No account is needed, and it integrates with HealthKit.

Highlights
  • Track and visualize workout progress
  • Muscle fatigue heat map
  • Create unlimited workout routines
  • Encourages progressive overload
  • 1000+ exercises
  • Workout history review
  • HealthKit integration
Features
Read full description

S2 (Superior Self) is your ultimate workout companion, allowing you to track and visualize your workout progress. Whether you want to lose weight or gain muscle mass, S2 is an excellent tool to help you with progressive overload and beat the yesterday you. - Premium, beautiful workout app - No account registration is required - Fast and intuitive. No load times - View your muscle fatigue on a body heat map - Create unlimited workout routines - Encourages progressive overload - 1000+ exercises - Improved insights over time How does it work? Start by creating your workout routines in S2. Your first workout for any given routine will act as a baseline for the next workout, encouraging you to do more work by moving more mass. The technical term for this is called progressive overload, and it's the core principle behind any successful strength training. Between workouts (or during an ongoing workout) you can review your past performance by easily accessing your workout history. S2 integrates with HealthKit to register your workouts. Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Strongify

Easily log your weightlifting sessions by recording reps and weight lifted. Customize exercises and routines, then track your progress over time with motivating charts and a workout calendar. Share your achievements on social media.

Highlights
  • Log reps and weight in few taps
  • Create custom routines and exercises
  • Track progress with charts
  • Workout calendar view
  • Share workouts on social media
  • Support for time-based exercises
Features
Read full description

Meet Strongify, the easiest workout tracker app. Enter the number of reps and the weight you lifted in just a few taps. Create any exercise and track your progress over time. Set up now the gym routine you deserve. EASY You can name your routines and exercises as you want. Don't spend that much time trying to find the official (long and boring) name of your workout in an endless list of exercises. Create a routine, create an exercise in it, and you are ready to go! You know what needs to be done for your body, and an app shouldn't make it difficult FAST Tracking your progress should be fast. In fact, Strongify does it in a few taps only! Are you going to the gym to look at your workout app? We don't think so! That's why Strongify will remember the last weight and reps you entered, which makes adding a workout fast and convenient. Focus on the gains; we take care of the rest. STAY MOTIVATED Check your progress over time with our charts. Nothing is more motivating than seeing your own improvement. Every time you go to the gym, you will know how well you performed last time. Outperform yourself week after week. SHARE YOUR SUCCESSES Share your workout with your social networks. You can also directly add them to your Instagram Story! We think you should be proud of what you accomplish (especially if you broke your previous bench press max weight). Share that with style with our different cards: - Total volume lifted - Best set - Progress over time - Reps Only - Duration TIME-BASED EXERCISES You can also track your planks, stretching exercises, or yoga sessions. CALENDAR Another way to get motivated is to see how often you've worked out this week or month. We included a calendar that shows exactly that. You can quickly overview your past workouts and see exactly what exercises you performed on a specific day. THEMES Everyone has different tastes, we are totally fine if you don't like the default theme. That's why we included others. Prefer pink? Maybe black? We've got you covered! APP FEATURES: - Easy and simple UI - Fast, no more wasted time at the gym - Efficient tracking of your workout - Log your reps and weight in a few taps. - Create any custom routines you want - Support for imperial and metric units - Track your progress - Get relevant stats on your progress - Multiple charts - Reach your fitness goals - Analyze your performance - Share your workout on your Instagram Story - See all your past workouts on a calendar - Try themes before trying the Premium version - Get your dream body A note from the developer: I could never remember how much weight I lifted during my previous workouts. I wanted an easy way to track my workouts without spending too much time on it. I tried to create a simple, yet effective way to track my progress without bloating the app with useless features; I hope you like it! Feel free to consult our privacy policy here: https://astrochimp.framer.website/privacy and our terms of use here: https://astrochimp.framer.website/terms Keep it Strong!

Screenshots

S24 screens
Strongify4 screens

Verdict

The call

The clearest difference is review sentiment: Strongify at 72% against S2's 41%. Strongify also leads on rating (4.5 vs 4.1). On price, ratings volume, 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. S2 sells 2 in-app purchases, starting at $22.99 per year and Strongify sells 6 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Strongify holds the better App Store score, 4.5 against 4.1. Both are backed by a comparable volume of ratings — 126 and 280 respectively. Written reviews point the same way: 41% of S2's written reviews are positive against 72% of Strongify's.

UpkeepUpdate frequency

S2 ships an update fortnightly, Strongify every 8 days. The most recent releases landed on July 17, 2026 and September 27, 2026 respectively.

Scorecard2 real differences · 8 level
S2 versus Strongify: the parameters behind the verdict, then further details
ParameterS2Strongify
PriceFreeFree
Rating4.1 (126 ratings)4.5 (280 ratings) — better
Positive reviews41.3% of reviews72.0% of reviews — better
Number of ratings126280 — better
Update frequencyFortnightlyEvery 8 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhoneiPhone, Apple Watch — better
Requires iOS16.0 — better17.0
Further details — not scored
Size9 MB34 MB
Age rating12+4+
DeveloperFormbound ABAstrochimp SRL

Customer experience

S2

All ratings126 ratings
Positive73.8%
Neutral11.9%
Negative14.3%
Written reviews75 reviews
Positive41.3%
Neutral22.7%
Negative36.0%

Strongify

All ratings278 ratings
Positive86.3%
Neutral5.4%
Negative8.3%
Written reviews246 reviews
Positive72.0%
Neutral13.0%
Negative15.0%

Bugs and requests

S2

Not enough reviews yet to summarise bugs or requests.

Strongify

Reported bugs

4 issues
  • Workout data getting deleted after updates
  • Scrolling issues and screen freezes
  • Inconsistent Apple Watch integration
  • Incorrect workout data display

Requested features

6 requests
  • Add ability to pre-plan workouts
  • Implement dark mode
  • Improve Apple Watch integration
  • Add notes section for each exercise
  • Allow rearranging and organizing of exercises
Show 1 more
  • Provide more comprehensive data tracking and visualization

In-app purchases

2 purchases

S2

Subscriptions1
  • S2 Yearly$22.991 Year
One-time1
  • Strongly Pro$4.99
6 purchases

Strongify

Subscriptions4
  • Strongify Weekly Plan3 Days trial$4.997 Days
  • Strongify Premium One Month$7.991 Month
  • Strongify Annual Plan$24.991 Year
Show 1 more
  • Strongify Premium One Year7 Days trial$29.991 Year
One-time2
  • Strongify Premium$8.99
  • Lifetime Premium$49.99

Questions

Is S2 free?
S2 is free to download, with in-app purchases available.
Is Strongify free?
Strongify is free to download, with in-app purchases available.
Which has better reviews, S2 or Strongify?
Strongify is rated higher. S2 averages 4.1 out of 5 from 126 ratings, while Strongify averages 4.5 from 280 ratings.
Do S2 or Strongify have ads?
Neither S2 nor Strongify shows ads.
Which is updated more often, S2 or Strongify?
S2 ships an update fortnightly, and Strongify every 8 days. Most recently, S2 was updated on July 17, 2026 and Strongify on September 27, 2026.

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