Clockwork vs BMI Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Clockwork
This app allows you to measure the accuracy of your watches using your phone's camera. It compares an image of your watch to an atomic clock to calculate its timekeeping offset. Track accuracy over time with graphs and store detailed watch information.
- Measure accuracy using images
- Atomic clock synchronization
- Accuracy over time graphs
- Store detailed watch information
- Dark mode support
- Digital and analog atomic clock
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Measure the accuracy of your watches today! Clockwork includes several useful features. You can store watch information, measure watch accuracy, and set your watch using a clock synchronized with atomic time. Check it out now! _MEASUREMENTS USING IMAGES_ Most other watch measurement apps require either third-party equipment or that you press a button at a specific time. Additional equipment is often expensive, and timing a button press is difficult to do precisely. Clockwork solves this by letting you take a picture of your watch and indicate the time shown in the image. We then synchronize the image capture time with atomic time before comparing it with the time shown on the watch to calculate an offset. Taking measurements over time provides a real-world view of your watch's accuracy. _GRAPHS_ Watch your measurements over time on a beautifully crafted graph. The graph shows how your watch's accuracy changes over time and offers several modes to help you understand its performance. _WHY MEASURE?_ Knowing the accuracy of your watch is interesting on its own, but it also has several practical uses. It can indicate when it is time for a service, and documented accuracy could increase resale value, especially for vintage watches. _STORE DETAILED INFORMATION_ In case of theft or accidents, it will always help to have your information stored in a secure place. _ATOMIC CLOCK, DARK MODE AND MUCH MORE!_ Clockwork includes an atomic clock in both digital and analog formats to help you set your watch as precisely as possible. Powerful settings such as Dark or Light mode, separate day and date formats, and different ways to sort your watches let you customize the app to your liking. // Appfred AS © 2026
BMI Calculator
Calculate your Body Mass Index (BMI) quickly and accurately using your age, gender, height, and weight. Track your progress with visual tools and personalized insights to support your health and fitness goals.
- Intuitive BMI meter with color-coded gauge
- Metric and imperial unit support
- Save and track past BMI entries
- Visual progress bar with personalized status
- Includes age and gender for better insight
- Dark mode-friendly design
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Stay on top of your health with the beautifully designed BMI Calculator app. Whether you’re looking to lose weight, build muscle, or simply maintain a healthy lifestyle, this app provides quick and accurate Body Mass Index (BMI) calculations based on your age, gender, height, and weight. Features: • Intuitive BMI meter with color-coded gauge • Supports both metric (kg/cm) and imperial (lb/ft/in) units • Animated pointer with real-time updates • Save and track past BMI entries • Visual progress bar with personalized BMI status • Includes age and gender for better insight • Lightweight and easy to use • Dark mode-friendly design • Built-in interstitial ad logic for seamless use Whether you’re a fitness enthusiast or just starting your health journey, this app is your perfect companion. Understand your body better — download now and calculate your BMI in seconds!
Screenshots
Verdict
The clearest difference is rating: Clockwork at 4.4 against BMI Calculator's 1.5. Clockwork also leads on update cadence (every 3 weeks vs every 3 months) and ratings volume (24 vs 2). BMI Calculator's advantage is in-app purchases (none vs 1) and device support (3 vs 1). On price 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. Clockwork sells 1 one-off in-app purchase. BMI Calculator asks for nothing beyond the download.
Clockwork holds the better App Store score, 4.4 against 1.5. That said, the two scores are not equally well evidenced: Clockwork has 24 ratings behind it against 2, so its average is the more settled of the two.
Clockwork ships an update every 3 weeks, BMI Calculator every 3 months. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.
| Parameter | Clockwork | BMI Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (24 ratings) — better | 1.5 (2 ratings) |
| Positive reviews | 45.5% of reviews | — |
| Number of ratings | 24 — better | 2 |
| Update frequency | Every 3 weeks — better | Every 3 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.4 | 12.0 — better |
| Further details — not scored | ||
| Size | 242 MB | 49 MB |
| Age rating | 4+ | 4+ |
| Developer | Appfred AS | PIXOPLAY IT SERVICES PRIVATE LIMITED |
Customer experience
Clockwork
BMI Calculator
In-app purchases
Clockwork
- Clockwork Premium$5.99
BMI Calculator
No in-app purchases
Questions
Is Clockwork free?
Is BMI Calculator free?
Which has better reviews, Clockwork or BMI Calculator?
Do Clockwork or BMI Calculator have ads?
Which is updated more often, Clockwork or BMI Calculator?
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