S2 vs Simple Workout Log
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/
Simple Workout Log
This app provides a straightforward way to log your gym workouts and track your strength progression. It focuses on simplicity and efficiency, allowing you to create custom routines, log sets quickly, and monitor your progress over time without unnecessary distractions.
- Create custom workouts
- Log sets quickly
- Auto-load previous sets
- Built-in rest timers
- Track strength progress with stats
- View training consistency
- Add notes and tags
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Ironotes is a simple workout log for people who care about getting stronger - not chasing the latest fitness trend. They've already found the few things that drive almost all of their results: progressive overload, a handful of proven lifts, and consistency. That's why they choose a minimalist app that stays out of the way and just works. Why lifters choose Ironotes: "Simple, intuitive, effective. No fancy gimmicks. I was able to set everything up in ten minutes." "Offers the functionality of subscription services for absolutely free." "Free. Clean. Journal. PBs. A few charts. Just get the app." Follow your own program. Log sets without interrupting your workout. Know what you lifted last time. See your progress and consistency. Keep hitting PR's. No paywall to get started. No sign-up. No ads. No mandatory subscription. If you enjoy using Ironotes, you can support its development with a voluntary donation. Build your workouts • Create unlimited custom workouts • Full control—no templates or restrictions Log your training • Log weight, reps, and sets in seconds • Auto-load previous sets • Session history at a glance • Built-in rest timers • Tag sets however you like: RPE's, RIR's, warm-ups, targets etc. Track progress • Strength and volume trends • Workout consistency • Personal records • Workout and exercise notes Your data stays yours • Apple Health integration • iCloud sync • CSV export • Supports kg & lbs No sign-up. No questionnaires. No AI workout plans. No social feed. Just a simple workout log for getting stronger. Terms of Service: https://ironotes.app/terms-of-service Privacy Policy: https://ironotes.app/privacy-policy
Screenshots
Verdict
The clearest difference is review sentiment: Simple Workout Log at 93% against S2's 41%. Simple Workout Log also leads on rating (4.8 vs 4.1) and update cadence (every 2 days vs fortnightly). S2's advantage is monetization model (free with in-app purchases vs subscription). On price, ratings volume, ads and in-app purchases 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 Simple Workout Log sells 10 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
Simple Workout Log holds the better App Store score, 4.8 against 4.1. Both are backed by a comparable volume of ratings — 129 and 364 respectively. Written reviews point the same way: 41% of S2's written reviews are positive against 93% of Simple Workout Log's.
S2 ships an update fortnightly, Simple Workout Log every 2 days. The most recent releases landed on October 20, 2026 and October 25, 2026 respectively.
| Parameter | S2 | Simple Workout Log |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (129 ratings) | 4.8 (364 ratings) — better |
| Positive reviews | 41.3% of reviews | 93.0% of reviews — better |
| Number of ratings | 129 | 364 — better |
| Update frequency | Fortnightly | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases — better | Subscription |
| Devices | iPhone | iPhone, Apple Watch — better |
| Requires iOS | 16.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 9 MB | 81 MB |
| Age rating | 12+ | 4+ |
| Developer | Formbound AB | Arnas Dilys |
Customer experience
S2
Simple Workout Log
In-app purchases
S2
- S2 Yearly$22.991 Year
- Strongly Pro$4.99
Simple Workout Log
- Monthly Support$1.991 Month
- Ironotes PRO Monthly7 Days trial$2.991 Month
- Extra Monthly Support$3.991 Month
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- Ironotes PRO Yearly7 Days trial$14.991 Year
- Yearly Support$19.991 Year
- Protein Bar$2.99
- Kebab & Salad$6.99
- Gym Membership$19.99
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- Ironotes PRO Forever$34.99
- Supplement Stack$59.99








