Comparison

S2 vs Shrug

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

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.

Highlights
  • Track gym lifts
  • Progressive overload tracking
  • Simple interface
  • All features free
  • No subscription required
Features
Read full description

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

S24 screens
Shrug3 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. S2 sells 2 in-app purchases, starting at $22.99 per year. Shrug asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

S2 ships an update fortnightly, Shrug every 2 months. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

Scorecard8 real differences · 2 level
S2 versus Shrug: the parameters behind the verdict, then further details
ParameterS2Shrug
PriceFreeFree
Rating4.1 (129 ratings)4.6 (9 ratings) — better
Positive reviews41.3% of reviews80.0% of reviews — better
Number of ratings129 — better9
Update frequencyFortnightly — betterEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS16.013.0 — better
Further details — not scored
Size9 MB17 MB
Age rating12+4+
DeveloperFormbound ABSuper Symmetry LLC

Customer experience

S2

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

Shrug

All ratings9 ratings
Positive88.9%
Neutral11.1%
Negative0.0%
Written reviews5 reviews
Positive80.0%
Neutral20.0%
Negative0.0%

In-app purchases

2 purchases

S2

Subscriptions1
  • S2 Yearly$22.991 Year
One-time1
  • Strongly Pro$4.99
None

Shrug

No in-app purchases

Questions

Is S2 free?
S2 is free to download, with in-app purchases available.
Is Shrug free?
Shrug is free to download, with no in-app purchases.
Which has better reviews, S2 or Shrug?
Shrug is rated higher. S2 averages 4.1 out of 5 from 129 ratings, while Shrug averages 4.6 from 9 ratings.
Do S2 or Shrug have ads?
Neither S2 nor Shrug shows ads.
Which is updated more often, S2 or Shrug?
S2 ships an update fortnightly, and Shrug every 2 months. Most recently, S2 was updated on October 26, 2026 and Shrug on October 24, 2026.

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