# Tide Clock vs ZORIA Sky

The clearest difference is update cadence: ZORIA Sky at every 2 days against Tide Clock's fortnightly. Tide 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.

Both are free to download. Tide Clock sells 1 in-app purchase, starting at $5.99 per year and ZORIA Sky sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Tide Clock ships an update fortnightly, ZORIA Sky every 2 days. The most recent releases landed on November 11, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | Tide Clock | ZORIA Sky |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 days** |
| Monetization | — | Free |
| Size | 113 MB | 22 MB |
| Requires iOS | **16.6** | 18.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [DAVID JOHN EVANS](https://appshunter.io/developer/1801935729) | [cedric liagre](https://appshunter.io/developer/6797196379) |

## What reviewers say

### Tide Clock

[App page](https://appshunter.io/ios/app/tide-clock/id6743213810)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tides | $5.99 | per year |


### ZORIA Sky

[App page](https://appshunter.io/ios/app/zoria-sky/id6797196377)

This app predicts the quality of sunrise and sunset based on weather data, assigning a score from 0-100. It calculates exact astronomical times and offers a 10-day forecast, allowing users to set alerts for optimal viewing conditions. Users can also log their observations and share photos.

**Highlights:** Sunrise/sunset quality score (0-100), Detailed weather data analysis, Exact astronomical time calculations, 10-day forecast, Customizable alert thresholds, Real-time sun position globe, Photo logging with weather data

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ZORIA Pro — monthly | $3.99 | per month |
| ZORIA Pro — yearly | $24.99 | per year |


## Frequently asked questions

### Is Tide Clock free?

Tide Clock is free to download, with in-app purchases available.

### Is ZORIA Sky free?

ZORIA Sky is free to download, with in-app purchases available.

### Do Tide Clock or ZORIA Sky have ads?

Neither Tide Clock nor ZORIA Sky shows ads.

### Which is updated more often, Tide Clock or ZORIA Sky?

Tide Clock ships an update fortnightly, and ZORIA Sky every 2 days. Most recently, Tide Clock was updated on November 11, 2026 and ZORIA Sky on November 10, 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.*