# Sereni vs Liminal Clock

The clearest difference is ads: Liminal Clock at none against Sereni's shown. Liminal Clock also leads on update cadence (every 2 weeks vs every 2 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Sereni sells 1 one-off in-app purchase and Liminal Clock sells 1 in-app purchase, starting at $19.99 per year. Whichever you choose, the download price is not the number that matters.

Sereni ships an update every 2 months, Liminal Clock every 2 weeks. The most recent releases landed on October 6, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Sereni | Liminal Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/sereni-sleep-and-focus-sounds/id1663702621/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 57 MB | 195 MB |
| Requires iOS | **17.0** | 17.5 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [michael ortiz](https://appshunter.io/developer/1663702623) | [Braviata LLC](https://appshunter.io/developer/1851884696) |

## What reviewers say

### Sereni

[App page](https://appshunter.io/ios/app/sereni-sleep-and-focus-sounds/id1663702621)

This app offers customizable white, pink, and brown noise sounds to aid focus, relaxation, or sleep. Its simple interface allows volume adjustment and timer settings for personalized ambient soundscapes.

**Highlights:** White, pink, and brown noise options, Customizable volume control, Adjustable timer settings, Simple and user-friendly interface, Minimalistic design

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sereni Plus | $1.99 | one-time |


### Liminal Clock

[App page](https://appshunter.io/ios/app/liminal-clock/id6755091701)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Liminal Clock Premium - Yearly | $19.99 | per year |


## Frequently asked questions

### Is Sereni free?

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

### Is Liminal Clock free?

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

### Do Sereni or Liminal Clock have ads?

Sereni shows ads; Liminal Clock does not.

### Which is updated more often, Sereni or Liminal Clock?

Sereni ships an update every 2 months, and Liminal Clock every 2 weeks. Most recently, Sereni was updated on October 6, 2026 and Liminal Clock on October 7, 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.*