Zygo vs SFS App
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Zygo
Access over 500 guided swim workouts paired with music. Track your progress with lap counting and a tempo trainer. Stay connected with walkie-talkie functionality and manage device settings.
- 500+ guided swim workouts
- Music integration
- Lap counting
- Tempo trainer
- Walkie-talkie feature
- Battery level monitoring
- Firmware updates
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Make the most of your Zygo with our app. In addition to a library of over 500 guided swim workouts paired to music, our app shows your battery levels and counts your laps, and has a tempo trainer and walkie-talkie. It also enables firmware updates for ongoing feature additions and enhancements.
SFS App
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SFS (StraightForward Smiles) is a modern dental-care application designed to help patients easily manage their oral health, book appointments, access treatment history, receive important reminders, and stay connected with their dentist through a smooth and user-friendly experience. The app brings your entire dental journey into one place, offering secure access to your medical records, diagnosis details, prescriptions, past visits, and progress tracking. With its simple interface and strong privacy protection, SFS ensures that your personal health information remains safe at all times. Real-time notifications, personalized dental-care tips, and follow-up reminders help you stay consistent with your treatment and maintain a healthier smile. SFS aims to make dental care simple, transparent, and accessible for everyone, allowing every patient to confidently track and improve their dental wellness.
Screenshots
Verdict
The clearest difference is in-app purchases: SFS App at none against Zygo's 2. SFS App also leads on device support (3 vs 1) and iOS requirement (13.0 vs 16.6). On price, update cadence and ads 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. Zygo sells 2 in-app purchases, starting at $4.99 per month. SFS App asks for nothing beyond the download.
Zygo ships an update every 2 months, SFS App every 3 months. The most recent releases landed on October 11, 2026 and October 6, 2026 respectively.
| Parameter | Zygo | SFS App |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (123 ratings) — better | — |
| Positive reviews | 42.9% of reviews | — |
| Number of ratings | 123 — better | — |
| Update frequency | Every 2 months — better | Every 3 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 100 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | Swimmersive Co | DEVBUNCH (PRIVATE) LIMITED |
In-app purchases
Zygo
- Monthly Subscription14 Days trial$4.991 Month
- Yearly Subscription14 Days trial$49.991 Year
SFS App
No in-app purchases








