S2 vs IRON Weight Lifting Tracker
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
Read full descriptionHide 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/
IRON Weight Lifting Tracker
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.
- 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
Read full descriptionHide full description
Designed for weightlifters. Catering to all gym enthusiasts, from beginners to bodybuilders and powerlifters, IRON revolutionizes user experience for workout trackers, planners, and gym logs. WORKOUTS, ROUTINES, AND GROUPS Build Workouts with Ease • Craft your workouts in advance using "Build Workout" feature, catering to various fitness goals such as muscle growth, tone, strength, bodybuilding, and powerlifting. • Use "Start Now" to perform weightlifting workouts on the fly without building a workout ahead of time. • Save your workouts to your Library for future use. Organize with Groups and Routines • Streamline your training routines by creating groups; for instance, label a group "5 Day Split" for easy organization. • Pin your favorite workouts at the top of your Library for quick and convenient access. WORKOUT LOGGING AND EXERCISE TRACKING Efficient Set Logging • Logging sets is the heart of our Exercise Stats, automatically updating your progress as you log sets. • We simplify your experience by autofilling previous weights and rep counts, reducing manual entries. • Log weightlifting workouts without building them ahead of time with Start Now. Insightful Performance Metrics • Delve into your Workout Stats to view analytics aggregated from your entire workout history, offering insights into overall performance trends and progress over time. • Explore your Exercise Stats, providing detailed analytics for individual exercises, identifying areas for improvement (red) and celebrating progress (green). • Navigate to your Muscle Group Stats to access analytics broken down by specific muscle groups, allowing for targeted assessment and optimization of your training approach. Comprehensive Exercise Statistics • Dive into detailed exercise data for individual exercises on the "Exercise Stats" page, featuring powerful charts showcasing your progress over time for each weight lifting exercise. • Quick stats offer insights like average lift, lowest lift, most frequent lift, average rep count, and more. EXERCISE INFO AND EDUCATION Visual Learning with Exercise Videos • Access demonstration videos for every exercise to ensure proper form and technique. • The Exercise Info page provides step-by-step instructions for each exercise, promoting safe and effective workouts. WORKOUT HISTORY Track Your Progress • Review your workout history, filtering data by muscle group, and sort by workouts or logged sets. MORE INFO • Tailor your workout plans for muscle growth, strength, or weight loss. • Enjoy home workouts or hit the gym with confidence with a powerful weight lifting tracker. • Utilize weightlifting for effective weight and fat loss. • Replace your traditional workout journal and gym log. • Experience the freedom of a free workout planner and weight lifting tracker. • Achieve your fitness goals with a simple gym log, gym planner, and weight lifting tracker. IRON: Your go-to companion for weight lifting, workout tracking, and gym logging. Optimize your weight lifting routine with our free workout planner. Say goodbye to traditional workout journals, trackers, and gym logs and elevate your fitness goals with IRON - your ultimate gym partner. Start tracking your weight lifting workouts today. PRIVACY ironapp.co/privacy TERMS ironapp.co/terms
Screenshots
Verdict
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.
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 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.
| Parameter | S2 | IRON Weight Lifting Tracker |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (129 ratings) | 4.5 (420 ratings) — better |
| Positive reviews | 41.3% of reviews | 56.9% of reviews — better |
| Number of ratings | 129 | 420 — better |
| Update frequency | Fortnightly | Every 5 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone | iPhone |
| Requires iOS | 16.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 9 MB | 85 MB |
| Age rating | 12+ | 4+ |
| Developer | Formbound AB | IRON Digital, Inc. |
Customer experience
S2
IRON Weight Lifting Tracker
Bugs and requests
S2
Not enough reviews yet to summarise bugs or requests.
IRON Weight Lifting Tracker
Reported bugs
3 issues- Unable to delete or edit recorded workouts
- Subscription issues (unable to use app after trial)
- Repeated login prompts even with active subscription
Requested features
5 requests- 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
In-app purchases
S2
- S2 Yearly$22.991 Year
- Strongly Pro$4.99
IRON Weight Lifting Tracker
- Monthly$5.991 Month
- Annual Subscription7 Days trial$35.991 Year
- Lifetime$99.99
Questions
Is S2 free?
Is IRON Weight Lifting Tracker free?
Which has better reviews, S2 or IRON Weight Lifting Tracker?
Do S2 or IRON Weight Lifting Tracker have ads?
Which is updated more often, S2 or IRON Weight Lifting Tracker?
Other comparisons















