Hourglass vs AClock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Hourglass
A minimalistic countdown clock app designed for iPhone. It offers a clean interface with a visual progress indicator and supports multiple time units. Easily share countdowns and receive notifications when events conclude.
- Minimalistic design
- Multiple time units
- Visual progress indicator
- Unlimited countdowns
- Sharable content
- Push notifications
- Notification Center widget
- Apple Watch compatibility
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When time doesn't fly, countdown in style with Hourglass. Hourglass is a minimalistic countdown clock for iPhone. It's simplistic, easy to use, and has a beautiful design. Features: - Beautiful, Minimal Design: The flagship feature of Hourglass is its incredible design. The sleek, black background blends seamlessly with the device bezel. No complicated features or in-app purchases, just a clear design with easily readable text. - Multiple Time Units: Simply tap the time remaining to switch between seconds, minutes, hours, and days. - Visual Progress Indicator: The beautiful blue ring surrounding the time indicates the progress of the time remaining to an event. - Unlimited Countdowns: Countdown to as many events as your heart desires. Simply swipe left or right to switch countdowns, and get an overview of all your countdowns by going back to the Countdowns list - Sharable Content: Easily E-mail, Text, or Tweet the time left to an event by tapping the Share icon. - Push Notifications: Get notified when a countdown finally finishes. - Notification Center Widget: Instead of having to open Hourglass, just swipe down to view your Countdowns in the Notification Centre. - Compatible with Apple Watch: Now, you can easily view your countdowns quickly and easily, right on your wrist!
AClock
This minimalist clock app offers a customizable full-screen display with options for flip or classic digital styles. It includes productivity tools like a stopwatch, countdown, and Pomodoro timer, along with personalized features such as countdowns to important dates and customizable slogans. The app is designed for extreme power saving and eye protection with a night mode.
- Flip and classic digital clock styles
- Stopwatch, countdown, and Pomodoro timer
- Countdown to dates and anniversaries
- Customizable colors, fonts, and slogans
- Night mode for eye protection
- 12/24 hour system support
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AClock is a fully functional, minimalist design, extreme power saving, lightweight and efficient clock app. special function: 1. Switch between page turning clock and classic digital clock as you like 2. Built-in convenient stopwatch, countdown, Pomodoro 3. Display of countdown days and anniversaries to create your own personalized clock 4. Customize the font color and size, and customize the background color 5. Customize your inspirational slogan to encourage your dedicated self~ 6. Date, second, motivational slogan, custom display 7. Support night mode, more eye protection 8. Support 12-hour system and 24-hour system 9. Extremely power saving, all-round optimization, escort the power 10. Countdown to the exam
Screenshots
Verdict
The clearest difference is price: Hourglass at Free against AClock's $0.99. Hourglass also leads on iOS requirement (8.2 vs 11.0). AClock's advantage is rating (4.7 vs 4.0) and review sentiment (97% vs 80%). On ratings volume, update cadence, ads and in-app purchases 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
Hourglass is free to download; AClock costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
AClock holds the better App Store score, 4.7 against 4.0. Both are backed by a comparable volume of ratings — 4 and 10 respectively. Written reviews point the same way: 80% of Hourglass's written reviews are positive against 97% of AClock's.
Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on June 10, 2026 and October 1, 2026 respectively.
| Parameter | Hourglass | AClock |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 4.0 (4 ratings) | 4.7 (10 ratings) — better |
| Positive reviews | 80.0% of reviews | 96.6% of reviews — better |
| Number of ratings | 4 | 10 — better |
| Update frequency | Fortnightly | Fortnightly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 8.2 — better | 11.0 |
| Further details — not scored | ||
| Size | 14 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Mat Cartmill | Zhengzhou Sibo Intelligent Technology Co., Ltd. |
Customer experience
Hourglass
AClock
In-app purchases
Hourglass
No in-app purchases
AClock
No in-app purchases








