# S2 vs StrengthLog

The clearest difference is review sentiment: StrengthLog at 89% against S2's 41%. StrengthLog also leads on rating (4.9 vs 4.1) and ratings volume (3.6K vs 126). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. S2 sells 2 in-app purchases, starting at $22.99 per year and StrengthLog sells 3 in-app purchases, starting at $16.90 per month. Whichever you choose, the download price is not the number that matters.

StrengthLog holds the better App Store score, 4.9 against 4.1. That said, the two scores are not equally well evidenced: StrengthLog has 3.6K ratings behind it against 126, 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 89% of StrengthLog's.

S2 ships an update fortnightly, StrengthLog every 10 days. Both last shipped on September 29, 2026.

## The numbers

| Metric | S2 | StrengthLog |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (126 ratings)](https://appshunter.io/ios/app/s2-strength-log/id1007310227/reviews) | **[4.9 (3.6K ratings)](https://appshunter.io/ios/app/strengthlog-workout-tracker/id1434229662/reviews)** |
| Number of ratings | 126 | **3.6K** |
| Positive reviews | 41.3% of reviews | **88.5% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 10 days** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 9 MB | 184 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 12+ | 4+ |
| Developer | [Formbound AB](https://appshunter.io/developer/531002945) | [Styrkelabbet AB](https://appshunter.io/developer/1434229661) |

## What reviewers say

### S2

[App page](https://appshunter.io/ios/app/s2-strength-log/id1007310227)

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:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| S2 Yearly | $22.99 | per year |
| Strongly Pro | $4.99 | one-time |


### StrengthLog

[App page](https://appshunter.io/ios/app/strengthlog-workout-tracker/id1434229662)

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:** Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| StrengthLog Premium - 1 month | $16.90 | per month |
| StrengthLog Premium - 3 months | $37.90 | per 3 months |
| StrengthLog Premium - 1 year | $109.00 | per year |

**What reviewers like**

- 👍 Easy to use
- 🚀 Intuitive interface
- 💪 Comprehensive workout tracking
- 📊 Detailed progress analytics
- 🎥 Helpful exercise videos

**What reviewers complain about**

- 🔍 Cluttered main page
- 🐛 Occasional bugs and crashes
- 💰 Premium subscription is expensive
- ⌚ Apple Watch app issues

**Reported bugs**

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

**Requested features**

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


## Frequently asked questions

### Is S2 free?

S2 is free to download, with in-app purchases available.

### Is StrengthLog free?

StrengthLog is free to download, with in-app purchases available.

### Which has better reviews, S2 or StrengthLog?

StrengthLog is rated higher. S2 averages 4.1 out of 5 from 126 ratings, while StrengthLog averages 4.9 from 3.6K ratings.

### Do S2 or StrengthLog have ads?

Neither S2 nor StrengthLog shows ads.

### Which is updated more often, S2 or StrengthLog?

S2 ships an update fortnightly, and StrengthLog every 10 days. Most recently, S2 was updated on September 29, 2026 and StrengthLog on September 29, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*