# Astrodate vs Circle Moving Clock

The clearest difference is update cadence: Astrodate at every 12 months against Circle Moving Clock's every 28 months. Circle Moving Clock's advantage is iOS requirement (16.6 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Astrodate costs $0.99 and Circle Moving Clock $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Astrodate ships an update every 12 months, Circle Moving Clock every 28 months. The most recent releases landed on September 10, 2026 and December 24, 2025 respectively.

## The numbers

| Metric | Astrodate | Circle Moving Clock |
| --- | --- | --- |
| Price | $0.99 | $0.99 |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/astrodate/id308461774/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 12 months** | Every 28 months |
| Monetization | Paid | — |
| Size | 1 MB | 1 MB |
| Requires iOS | 18.0 | **16.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Flying Titans, Inc.](https://appshunter.io/developer/308461777) | [Dietmar Herbert Schwarz Webers](https://appshunter.io/developer/1714893762) |

## What reviewers say

### Astrodate

[App page](https://appshunter.io/ios/app/astrodate/id308461774)

This app provides the current date and time in multiple specialized formats, including Julian Date, Modified Julian Date, and Truncated Julian Date. It also offers standard Gregorian ISO 8601 formats, eliminating the need for manual calculations. Ideal for astronomers and those requiring precise timekeeping across various systems.

**Highlights:** Julian Date conversion, Modified Julian Date, Truncated Julian Date, Dublin Julian Date, Gregorian ISO 8601 format, Astronomical date calculations

**Features:** macOS Compatibility

**In-app purchases:** none


### Circle Moving Clock

[App page](https://appshunter.io/ios/app/circle-moving-clock/id998619272)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Astrodate free?

Astrodate costs $0.99, with no in-app purchases.

### Is Circle Moving Clock free?

Circle Moving Clock costs $0.99, with no in-app purchases.

### Do Astrodate or Circle Moving Clock have ads?

Neither Astrodate nor Circle Moving Clock shows ads.

### Which is updated more often, Astrodate or Circle Moving Clock?

Astrodate ships an update every 12 months, and Circle Moving Clock every 28 months. Most recently, Astrodate was updated on September 10, 2026 and Circle Moving Clock on December 24, 2025.

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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.*