# Daimyo Clock vs Citizen Sky View

The clearest difference is rating: Citizen Sky View at 5.0 against Daimyo Clock's 4.0. Citizen Sky View also leads on update cadence (every 2 weeks vs every 37 months) and iOS requirement (10.3 vs 16.0). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Citizen Sky View holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Daimyo Clock ships an update every 37 months, Citizen Sky View every 2 weeks. The most recent releases landed on October 4, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Daimyo Clock | Citizen Sky View |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (1 ratings)](https://appshunter.io/ios/app/daimyo-clock/id1268135788/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/citizen-sky-view/id1302449465/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 37 months | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 1 MB | 26 MB |
| Requires iOS | 16.0 | **10.3** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Douglas Hildum](https://appshunter.io/developer/1268135787) | [University of Colorado Boulder](https://appshunter.io/developer/972210292) |

## What reviewers say

### Daimyo Clock

[App page](https://appshunter.io/ios/app/daimyo-clock/id1268135788)

Experience traditional Japanese timekeeping with this app, which recreates a 17th-century mechanical clock. It accurately displays time divided into six equal periods for day and night, adjusting for seasonal changes in daylight.

**Highlights:** Traditional Japanese timekeeping, Day/night divided into six equal periods, Seasonal daylight adjustments, Accurate solar noon calculation, Location-based time display, Twilight start/end calculation

**In-app purchases:** none


### Citizen Sky View

[App page](https://appshunter.io/ios/app/citizen-sky-view/id1302449465)

Participate in a NASA-sponsored citizen science project to study cloud formation. Coordinate with the project team for events, then use your phone to capture images of the sky at assigned locations and times. Your contributions help researchers learn more about atmospheric science.

**Highlights:** Citizen science participation, Cloud formation research, Event coordination, Location-based image capture, Data contribution for research

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Daimyo Clock free?

Daimyo Clock is free to download, with no in-app purchases.

### Is Citizen Sky View free?

Citizen Sky View is free to download, with no in-app purchases.

### Which has better reviews, Daimyo Clock or Citizen Sky View?

Citizen Sky View is rated higher. Daimyo Clock averages 4.0 out of 5 from 1 ratings, while Citizen Sky View averages 5.0 from 1 ratings.

### Do Daimyo Clock or Citizen Sky View have ads?

Neither Daimyo Clock nor Citizen Sky View shows ads.

### Which is updated more often, Daimyo Clock or Citizen Sky View?

Daimyo Clock ships an update every 37 months, and Citizen Sky View every 2 weeks. Most recently, Daimyo Clock was updated on October 4, 2026 and Citizen Sky View on October 9, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*