CheckTimeYo vs Seasonal World Clock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CheckTimeYo
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'CheckTimeYo' is a retro-looking clock app that displays the time, the time from cities around the world (489 of them) of your choice, a feed of your choice, a calendar, and today's moon phase. With 390 themes to choose from, you can even select a font to your liking. Download now! It's free, with no ads, no in-app purchases, and no catch! Using this app is easy. For many settings, there's no need to open the Settings screen. Just tap on the area of the screen where you want to make changes. For example, if you want to change the date format to your liking, simply tap on the date displayed on the screen.
Seasonal World Clock
Experience timekeeping inspired by traditional Japanese Wadokei. This app visualizes daylight length and seasonal changes on a unique dial, offering a different perspective on time beyond uniform hours.
- Wadokei-inspired clock face
- Seasonal dial changes
- Visualizes daylight length
- Latitude-based time perception
- Unique timekeeping experience
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A clock inspired by the traditional Japanese Wadokei, which was used during the Edo period. The dial changes with the seasons and latitude, making it a unique clock that lets you see the length of daylight around the world at a glance. (This app is not intended to be a historically accurate reproduction of the structure or operation of traditional wadokei clocks.) == What is a Wadokei? == A wadokei is a traditional Japanese clock used during the Edo period. It was designed to indicate time according to the Japanese temporal hour system. In this system, the time from sunrise to sunset was considered daytime, and the time from sunset to the next sunrise was considered nighttime. Each period was divided into six equal parts. Because the lengths of day and night vary depending on the season and latitude, the length of each temporal hour also changes. This is why the system is known as a "temporal hour" system. This app draws its clock face based on the sunrise and sunset times of a selected location, and displays the current temporal hour and the length of each hour. Although this way of telling time is no longer used in daily life, it offers a unique opportunity to experience local perceptions of time that differ from the uniform hours used today.
Screenshots
Verdict
The clearest difference is in-app purchases: CheckTimeYo at none against Seasonal World Clock's 3. CheckTimeYo also leads on update cadence (every 8 days vs every 3 weeks). On price, ads, device support and iOS requirement 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. Seasonal World Clock sells 3 one-off in-app purchases. CheckTimeYo asks for nothing beyond the download.
CheckTimeYo ships an update every 8 days, Seasonal World Clock every 3 weeks. The most recent releases landed on October 30, 2026 and November 10, 2026 respectively.
| Parameter | CheckTimeYo | Seasonal World Clock |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 8 days — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 17.4 — better | 18.6 |
| Further details — not scored | ||
| Size | 12 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | Masayoshi Ueda | microseed publishing |
In-app purchases
CheckTimeYo
No in-app purchases
Seasonal World Clock
- Sencha$0.99
- Matcha$2.99
- Gyokuro$5.99









