Earth Clock vs Simple Clock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Earth Clock
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A utility app that combines aerial photography and a clock. Aerial photos are displayed randomly every minute. Aerial photos can be selected from the following: million cities around the world, Japanese cities and towns, World Heritage Sites, and OS X / macOS code names. Supports customization of date and time formats and fonts.
Simple Clock
This utility app provides a customizable digital clock with adjustable colors and sizes, and an analog dial option for iPad users. It also offers accurate time synchronization via NTP servers.
- Customizable digital clock colors
- Adjustable clock sizes
- Toggle seconds display
- Analog dial for iPad
- NTP time synchronization
- Customizable NTP servers
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Simple Clock is an app designed for situations where timing is critical, such as live streams and event management. [Features] ・Digital Clock - Customize the clock’s color to your liking - Choose from three clock sizes (Small / Medium / Large) - Toggle the seconds display on or off ・Analog Dial (iPad Only) - Freely customize the dial and hand colors - Supports overlay display of digital time ・NTP Time Synchronization - Retrieve accurate time via the internet - Customizable NTP servers
Screenshots
Verdict
The clearest difference is update cadence: Simple Clock at every 6 weeks against Earth Clock's every 4 months. Simple Clock also leads on iOS requirement (14.0 vs 18.6). On price, ads, 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.
Earth Clock ships an update every 4 months, Simple Clock every 6 weeks. The most recent releases landed on October 12, 2026 and September 24, 2026 respectively.
| Parameter | Earth Clock | Simple Clock |
|---|---|---|
| Price | Free | Free |
| Rating | — | 1.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 4 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, Apple TV, Vision Pro — better | iPhone, iPad, iPod |
| Requires iOS | 18.6 | 14.0 — better |
| Further details — not scored | ||
| Size | 8 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Kazuhisa Asakawa | Imagination Studio LLC. |
In-app purchases
Earth Clock
No in-app purchases
Simple Clock
No in-app purchases
Questions
Is Earth Clock free?
Is Simple Clock free?
Do Earth Clock or Simple Clock have ads?
Which is updated more often, Earth Clock or Simple Clock?
Other comparisons
