# S2 vs IRON Weight Lifting Tracker

The clearest difference is rating: IRON Weight Lifting Tracker at 4.5 against S2's 4.1. IRON Weight Lifting Tracker also leads on review sentiment (57% vs 41%) and update cadence (every 5 days vs fortnightly). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. S2 sells 2 in-app purchases, starting at $22.99 per year and IRON Weight Lifting Tracker sells 3 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

IRON Weight Lifting Tracker holds the better App Store score, 4.5 against 4.1. Both are backed by a comparable volume of ratings — 129 and 420 respectively. Written reviews point the same way: 41% of S2's written reviews are positive against 57% of IRON Weight Lifting Tracker's.

S2 ships an update fortnightly, IRON Weight Lifting Tracker every 5 days. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | S2 | IRON Weight Lifting Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (129 ratings)](https://appshunter.io/ios/app/s2-strength-log/id1007310227/reviews) | **[4.5 (420 ratings)](https://appshunter.io/ios/app/iron-weight-lifting-tracker/id1400313064/reviews)** |
| Number of ratings | 129 | **420** |
| Positive reviews | 41.3% of reviews | **56.9% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 5 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 9 MB | 85 MB |
| Requires iOS | **16.0** | 17.6 |
| Devices | iPhone | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Formbound AB](https://appshunter.io/developer/531002945) | [IRON Digital, Inc.](https://appshunter.io/developer/1635201470) |

## 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 |


### IRON Weight Lifting Tracker

[App page](https://appshunter.io/ios/app/iron-weight-lifting-tracker/id1400313064)

This app helps weightlifters track workouts, plan routines, and log sets. It offers detailed performance metrics, exercise information with videos, and a comprehensive workout history. Tailor plans for muscle growth, strength, or fat loss.

**Highlights:** Build custom workouts, Log sets with autofill, Track performance metrics, View exercise stats and charts, Access exercise demonstration videos, Organize routines with groups, Review workout history

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $5.99 | per month |
| Annual Subscription | $35.99 | per year |
| Lifetime | $99.99 | one-time |

**What reviewers like**

- 🚀 Simple and intuitive interface
- 👍 Clean and minimalist design
- 🚀 Quick and easy to log workouts
- 👍 Helpful for tracking progress
- 👍 Great replacement for other apps

**What reviewers complain about**

- 🐛 Issues with logging workouts after updates
- 🔒 Subscription required to access full features
- 🐛 Subscription issues (unable to use app after trial)
- 🐛 Inability to delete or edit recorded workouts
- 🐛 Inconsistent app behavior (login issues, subscription prompts)

**Reported bugs**

- Unable to delete or edit recorded workouts
- Subscription issues (unable to use app after trial)
- Repeated login prompts even with active subscription

**Requested features**

- Add calendar view to review past workouts
- Improve exercise video demonstrations
- Expand exercise library to include more equipment
- Implement better progression tracking and planning
- Add timer/rest timer functionality


## Frequently asked questions

### Is S2 free?

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

### Is IRON Weight Lifting Tracker free?

IRON Weight Lifting Tracker is free to download, with in-app purchases available.

### Which has better reviews, S2 or IRON Weight Lifting Tracker?

IRON Weight Lifting Tracker is rated higher. S2 averages 4.1 out of 5 from 129 ratings, while IRON Weight Lifting Tracker averages 4.5 from 420 ratings.

### Do S2 or IRON Weight Lifting Tracker have ads?

Neither S2 nor IRON Weight Lifting Tracker shows ads.

### Which is updated more often, S2 or IRON Weight Lifting Tracker?

S2 ships an update fortnightly, and IRON Weight Lifting Tracker every 5 days. Most recently, S2 was updated on October 26, 2026 and IRON Weight Lifting Tracker on October 24, 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.*