S2 vs Shrug
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/
Shrug
Easily track your gym lifts to achieve progressive overload and see better results. This simple, free application offers all its features without any subscriptions.
- Track gym lifts
- Progressive overload tracking
- Simple interface
- All features free
- No subscription required
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Shrug helps you see better results from your time spent in the gym by making it easy to track your lifts so that you're performing progressive overload - the gradual increases in weight, reps, or other measures of intensity that force your body to adapt. Shrug is simple, free, and doesn't hide any of its features behind a subscription.
Screenshots
Verdict
The clearest difference is review sentiment: Shrug at 80% against S2's 41%. Shrug also leads on in-app purchases (none vs 2) and rating (4.6 vs 4.1). S2's advantage is update cadence (fortnightly vs every 2 months) and ratings volume (129 vs 9). On price 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. Shrug asks for nothing beyond the download.
Shrug holds the better App Store score, 4.6 against 4.1. That said, the two scores are not equally well evidenced: S2 has 129 ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 41% of S2's written reviews are positive against 80% of Shrug's.
S2 ships an update fortnightly, Shrug every 2 months. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.
| Parameter | S2 | Shrug |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (129 ratings) | 4.6 (9 ratings) — better |
| Positive reviews | 41.3% of reviews | 80.0% of reviews — better |
| Number of ratings | 129 — better | 9 |
| Update frequency | Fortnightly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 9 MB | 17 MB |
| Age rating | 12+ | 4+ |
| Developer | Formbound AB | Super Symmetry LLC |
Customer experience
S2
Shrug
In-app purchases
S2
- S2 Yearly$22.991 Year
- Strongly Pro$4.99
Shrug
No in-app purchases









