# Dozen Clock vs Sea Levels App

The clearest difference is price: Dozen Clock at $1.99 against Sea Levels App's $6.99. Dozen Clock also leads on device support (5 vs 2). On update cadence, ads, in-app purchases and iOS requirement there is nothing between them.

Dozen Clock costs $1.99 and Sea Levels App $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Dozen Clock ships an update every 2 days, Sea Levels App daily. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Dozen Clock | Sea Levels App |
| --- | --- | --- |
| Price | **$1.99** | $6.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 days | **Daily** |
| Size | 2 MB | 3 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod, Mac, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [Gergo Blasko](https://appshunter.io/developer/1767828070) | [Diogo de Gusmao-Sørensen](https://appshunter.io/developer/1788055653) |

## What reviewers say

### Dozen Clock

[App page](https://appshunter.io/ios/app/dozen-clock/id6733246889)

**Features:** Apple Watch app

**In-app purchases:** none


### Sea Levels App

[App page](https://appshunter.io/ios/app/sea-levels-app/id6740036491)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Dozen Clock free?

Dozen Clock costs $1.99, with no in-app purchases.

### Is Sea Levels App free?

Sea Levels App costs $6.99, with no in-app purchases.

### Do Dozen Clock or Sea Levels App have ads?

Neither Dozen Clock nor Sea Levels App shows ads.

### Which is updated more often, Dozen Clock or Sea Levels App?

Dozen Clock ships an update every 2 days, and Sea Levels App daily. Most recently, Dozen Clock was updated on October 27, 2026 and Sea Levels App on October 28, 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.*