zWatch vs 16
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
zWatch
This app tracks your daily activity, sleep patterns, and exercise, providing insights to encourage a healthy lifestyle. It requires a ZADEZ Smart Watch to function and offers customization options for your device.
- Accurate motion recording
- Detailed sleeping analysis
- Exercise tracking
- Set notifications
- Customize watch faces
- Alarm settings
- Apple Health integration
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ZADEZ provides zWatch app with accurate motion recording, sleeping details and exercise analysis. ZADEZ Smart Watch is required. After connecting to ZADEZ Smart Watch, zWatch app provides insight into how much you have moved and slept during the day, week, or month. Encourage you to love sport, enjoy a positive and healthy lifestyle, which in turn helps your well-being. You can also set Notification, Watch faces, alarm and other function via zWatch app. Please access our website at www.zadez.com or localization website for more information about ZADEZ Technology Corp. and zWatch app. Apple Health App Sharing -Integrates with Apple Health App
16
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Intermittent Fasting Tracker 16:8 – A Calmer, Smarter Way to Improve Your Health Are you looking for a simple, natural way to lose weight? Do you want to feel healthier without strict diets, intense workouts, or complicated routines? This Intermittent Fasting Tracker is built to guide you gently, confidently, and effortlessly on your journey to better wellness. Intermittent fasting is one of the most trusted methods to support weight loss and improve your metabolic health. With the right schedule, your body begins burning stored fat, stabilizing energy levels, and repairing cells more efficiently. This app makes fasting easier to understand, easier to follow, and easier to maintain — even if you’re just getting started. Is Intermittent Fasting Right for You? Studies show that structured fasting helps the body rest, reset, and function at its best. It may support insulin sensitivity, reduce inflammation, promote clearer thinking, and help balance your weight naturally. Our app gently guides you through each fasting cycle so you always know what to do next — no pressure, no confusion. Why Users Love This App - Natural Weight Management Lose weight sustainably by letting your body tap into its own energy reserves — no calorie counting needed. - Burn Fat More Efficiently Support fat-burning through well-timed fasting periods that work with your metabolism, not against it. - Better Daily Energy Fasting may improve mental clarity and help you feel more focused throughout the day. - Improve Long-Term Health Consistent fasting has been linked to better digestion, improved blood sugar control, and healthier aging. --- How to Get Started 1. Select how long you want your fasting window to be. 2. Choose from popular plans such as 14:10 (the easy to start), 16:8 (the most popular), 18:6 (the fat burning), 20:4 (the warrior diet), OMAD (one-meal-a-day), and more. 3. Start your fasting timer and let the app guide you with clear progress charts and helpful notifications. That’s it — simple, calm, and manageable for any lifestyle. --- Key Features - Designed for beginners, intermediate, and advanced fasters - Clean, intuitive fasting timer - Popular fasting plans with flexible adjustments - Weight tracking with clear visual trends - Syncs easily with Apple HealthKit - Helpful wellness tips and health articles - Encouraging insights to keep you consistent --- What Makes This Fasting App Different? A Supportive, Easy-to-Follow Experience Start, pause, or adjust your fasting window anytime. See how each cycle affects your body through simple graphs and daily summaries. Balanced, Science-Backed Guidance The app provides practical explanations of what happens during fasting so you understand your progress — without feeling overwhelmed. Track Your Weight & Activity Together Monitor changes in your weight and steps in one place. Clear visuals help you spot patterns and stay motivated. Millions of people practice intermittent fasting every day to feel healthier, lighter, and more in control. With this app, you can join them — calmly, confidently, and at your own pace. Claim: This app is developed for informational purposes only. You must always consult your physician or doctor before starting any diet program. References: - Harvard Health Publishing – “Ketogenic diet: What the science says”: https://www.health.harvard.edu/staying-healthy/ketogenic-diet-what-the-science-says - Mayo Clinic – “Ketogenic diet: A detailed beginner’s guide”: https://www.mayoclinic.org/healthy-lifestyle/weight-loss/in-depth/ketogenic-diet/art-20458606 Privacy policy: https://kahastudio.com/keto-diet-app/policy.html Terms of use: https://kahastudio.com/terms-of-use.html
Screenshots
Verdict
The clearest difference is in-app purchases: zWatch at none against 16's 2. zWatch also leads on iOS requirement (9.0 vs 14.0). 16's advantage is update cadence (every 3 weeks vs every 2 months). On price, ads 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. 16 sells 2 in-app purchases, starting at $4.99 per month. zWatch asks for nothing beyond the download.
zWatch ships an update every 2 months, 16 every 3 weeks. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.
| Parameter | zWatch | 16 |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 9.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 113 MB | 86 MB |
| Age rating | 4+ | 4+ |
| Developer | Zadez Vietnam Company Limited | KAHA INNOVATION COMPANY LIMITED |
In-app purchases
zWatch
No in-app purchases
16
- Monthly Trial7 Days trial$4.991 Month
- Yearly$19.991 Year









