Big Clock vs When
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Big Clock
This app displays the time edge-to-edge on iOS devices, offering enhanced readability with crisp fonts for advanced displays. Customize your clock face with bold fonts, choose time formats, and toggle seconds. It functions offline and prioritizes user data privacy.
- Edge-to-edge time display
- Crisp font for XDR/Liquid Retina
- Dark mode support
- 12/24 hour format
- Customizable clock face styling
- Offline functionality
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Big Clock is designed specifically for iOS users. With an optimised layout for iOS devices, the time can be shown from edge to edge on the display for better readability and usability. For devices adopting XDR or Liquid Retina display technologies, a more crisp and clear font can be shown. FEATURES * Dark mode (night mode) is supported natively in app. The clock face can be viewed comfortably whenever it is in day time or in dark. * The clock can be displayed in either 12/24 time format. * Styling your own clock face with bold font, or to choose showing/hiding the seconds counter. * Timing and clock styling are made within the app. No network connection is required. For accurate time display, please make sure your phone’s clock is in-sync with the timezone that you’re in. * As no third-parties is involved within the process, all data are kept within the app. Made by PPES Developers & Contributors
When
This app offers a minimalist flip clock experience with customizable widgets. It features a full-screen display with classic page-turning animations and adjustable brightness. Personalize your time display with options for seconds, date, and week.
- Full-screen classic flip animation
- Minimalist design style
- Customizable time display (seconds, date, week)
- 12/24 hour mode switching
- Adjustable screen brightness
- Multiple widget options (Flip Clock, Digital Clock, Calendar, Progress Bar, Disc Clock)
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It is a must-have personalized posing artifact for hipsters, a must-have tool for exam preparation and study, and hard work. Eye-catching digital digital watch display, convenient for your living room, any angle of the work desk to watch the time. Full screen flip, clock display more prominent, no matter where you put it, it is a beautiful scenery. Widgets: - Flip Clock Widget - Digital Clock Widget - Friday Calendar Widget - Progress Bar Widget - Disc Clock Widget Special Features. 1, full-screen classic page animation, minimalist design style 2、Free control of the display of time: seconds, date, week is free to control the display of hidden 3, 12 and 24 hours mode switching 4, left and right slide the clock screen, adjust the brightness of the screen
Screenshots
Verdict
The clearest difference is rating: When at 4.7 against Big Clock's 2.3. When also leads on review sentiment (90% vs 50%) and update cadence (weekly vs every 31 months). Big Clock's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
When holds the better App Store score, 4.7 against 2.3. That said, the two scores are not equally well evidenced: When has 28 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 50% of Big Clock's written reviews are positive against 90% of When's.
Big Clock ships an update every 31 months, When weekly. The most recent releases landed on October 2, 2026 and October 14, 2026 respectively.
| Parameter | Big Clock | When |
|---|---|---|
| Price | Free | Free |
| Rating | 2.3 (4 ratings) | 4.7 (28 ratings) — better |
| Positive reviews | 50.0% of reviews | 90.0% of reviews — better |
| Number of ratings | 4 | 28 — better |
| Update frequency | Every 31 months | Weekly — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 14.0 | 10.0 — better |
| Further details — not scored | ||
| Size | 8 MB | 73 MB |
| Age rating | 4+ | 4+ |
| Developer | Philip Tam | 磊 岑 |
Customer experience
Big Clock
When
In-app purchases
Big Clock
No in-app purchases
When
No in-app purchases
