B vs ZYNC
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
B
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Now available to all B-Leaf patients. Check out all the benefits we've created with our patients in mind: -Enjoy the latest offers -View order history -Browse products menu -Find nearest store locations -Customize your profile information -Keep up to date with Cannabis news -Receive alerts of new products, offers, and more!
ZYNC
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Master Your Metabolism with ZYNC. Stop counting calories and avoid the yo-yo effect. ZYNC is more than just a timer – it is your personal companion for healthy intermittent fasting, hydration, and body awareness. WHY ZYNC? Most fasting apps are complicated or boring. ZYNC combines sleek, modern design with scientifically proven methods. We don't just show you that you are fasting, but what is happening inside your body right now. FEATURES: Smart Fasting Tracker Choose from different modes, whether beginner or pro: • 13h (Circadian Rhythm) • 16:8 (The Classic) • 18:6 (Pro) • 20:4 (Warrior Mode) Live Bio-Rhythm Understand your body. ZYNC shows you live which phase you are currently in: • Blood Sugar Rise • Insulin Drop • Fat Burning • Autophagy (Cell Cleaning) Hydration Matrix Forget boring lists. Fill your daily "Hydration Matrix" and gamify your water intake. Simply tap the cells to add a glass. Body & BMI Track your weight and monitor your BMI with visual progress bars. Gamification Keep your "Flame Streak" alive! Every successful fast extends your streak. ZYNC+ (PREMIUM) The app is free to use. With ZYNC+ you get: • Ad-free experience • Unlimited History & Statistics • Support for an Indie Developer Start your journey to a healthier you today. Download ZYNC now!
Screenshots
Verdict
The clearest difference is in-app purchases: B at none against ZYNC's 1. B also leads on ads (none vs shown) and iOS requirement (12.0 vs 18.6). On price and device support 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. ZYNC sells 1 one-off in-app purchase. B asks for nothing beyond the download.
| Parameter | B | ZYNC |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | — |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 12.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 22 MB | 6 MB |
| Age rating | 17+ | 4+ |
| Developer | Caribbean Business Solution, LLC | Stefan Bartl-Tamesberger |
In-app purchases
B
No in-app purchases
ZYNC
- ZYNC Premium$8.99









