S2 vs Progression
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/
Progression
This app helps you track your fitness progress with a minimalist and fast interface. It automatically adjusts your weight and reps to help you break through plateaus and see results. Enjoy a clean design with no ads and deep iOS integration.
- One-tap logging
- Automatic progression adjustments
- Plateau recognition
- Detailed stats and charts
- Clean, ad-free interface
- iOS exclusive features (Widgets, Dynamic Island)
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MOTIVATION ISN'T A TRAINING STRATEGY. If you're serious about getting stronger, you measure it. Progression turns every set into data that makes you stronger – logged in seconds, clearly visualized, no clutter. Motivation gets you training. Data gets you further. Most people stall because they train blind – no plan, no numbers, no idea what they did last time. Progression remembers every set for you and shows you exactly when it's time to add weight. How it works: • Build your own training plan – or pick a program • Log every set in seconds • Get automatic suggestions for when to increase the weight • Track your progress in clear charts Everything you need: • Templates for recurring workouts • Built-in rest timer • Full training history & personal records PROGRESSION PRO The core features are free for your first workouts – just get started. With Pro, you get the most out of your training: • Unlimited training plans & workouts • All long-term charts & statistics You can start a free trial before any charge. Cancel anytime. Stop guessing. Start measuring. Questions or feedback? Reach out anytime: martin@devpie.de Terms of Use & Privacy: https://devpie.de/legal.html
Screenshots
Verdict
The clearest difference is rating: Progression at 4.5 against S2's 4.1. Progression also leads on review sentiment (59% vs 41%) and update cadence (weekly vs fortnightly). 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 Progression sells 5 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Progression holds the better App Store score, 4.5 against 4.1. Both are backed by a comparable volume of ratings — 126 and 160 respectively. Written reviews point the same way: 41% of S2's written reviews are positive against 59% of Progression's.
S2 ships an update fortnightly, Progression weekly. The most recent releases landed on October 12, 2026 and October 1, 2026 respectively.
| Parameter | S2 | Progression |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (126 ratings) | 4.5 (160 ratings) — better |
| Positive reviews | 41.3% of reviews | 58.8% of reviews — better |
| Number of ratings | 126 | 160 — better |
| Update frequency | Fortnightly | Weekly — 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 | 37 MB |
| Age rating | 12+ | 4+ |
| Developer | Formbound AB | Martin Pietrowski |
Customer experience
S2
Progression
In-app purchases
S2
- S2 Yearly$22.991 Year
- Strongly Pro$4.99
Progression
- PRO$6.997 Days
- PRO7 Days trial$12.991 Month
- PRO1 Month trial$79.991 Year
- Free Unlimited WorkoutsFree
- PRO$99.99







