S2 vs Strongify
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Track and visualize workout progress
- Muscle fatigue heat map
- Create unlimited workout routines
- Encourages progressive overload
- 1000+ exercises
- Workout history review
- HealthKit integration
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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/
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.
- 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
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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
Verdict
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
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.
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.
S2 ships an update fortnightly, Strongify every 8 days. The most recent releases landed on July 17, 2026 and September 27, 2026 respectively.
| Parameter | S2 | Strongify |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (126 ratings) | 4.5 (280 ratings) — better |
| Positive reviews | 41.3% of reviews | 72.0% of reviews — better |
| Number of ratings | 126 | 280 — better |
| Update frequency | Fortnightly | Every 8 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone | iPhone, Apple Watch — better |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 9 MB | 34 MB |
| Age rating | 12+ | 4+ |
| Developer | Formbound AB | Astrochimp SRL |
Customer experience
S2
Strongify
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
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- Provide more comprehensive data tracking and visualization
In-app purchases
S2
- S2 Yearly$22.991 Year
- Strongly Pro$4.99
Strongify
- Strongify Weekly Plan3 Days trial$4.997 Days
- Strongify Premium One Month$7.991 Month
- Strongify Annual Plan$24.991 Year
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- Strongify Premium One Year7 Days trial$29.991 Year
- Strongify Premium$8.99
- Lifetime Premium$49.99









