# Serene Timer vs Core1

The clearest difference is update cadence: Core1 at every 3 days against Serene Timer's every 7 months. Core1 also leads on iOS requirement (15.1 vs 17.5). On price, ads, in-app purchases and device support there is nothing between them.

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

Serene Timer ships an update every 7 months, Core1 every 3 days. The most recent releases landed on October 23, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Serene Timer | Core1 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/serene-timer/id6738510879/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 days** |
| Monetization | Free | — |
| Size | 35 MB | 22 MB |
| Requires iOS | 17.5 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Sebastian Ruhleder](https://appshunter.io/developer/1781085513) | [Heather Kim](https://appshunter.io/developer/1877817879) |

## What reviewers say

### Serene Timer

[App page](https://appshunter.io/ios/app/serene-timer/id6738510879)

This app provides a gentle and calm way to wake up or end meditation sessions. It uses sounds that gradually increase in volume, easing you into alertness without startling you. Ideal for naps and relaxation, it promotes a refreshed and centered feeling.

**Highlights:** Gradually increasing sound volume, Gentle wake-up experience, Supports meditation and naps, Calm and tranquil soundscapes, No harsh tones or jolts

**In-app purchases:** none


### Core1

[App page](https://appshunter.io/ios/app/core1/id6759274693)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Serene Timer free?

Serene Timer is free to download, with no in-app purchases.

### Is Core1 free?

Core1 is free to download, with no in-app purchases.

### Do Serene Timer or Core1 have ads?

Neither Serene Timer nor Core1 shows ads.

### Which is updated more often, Serene Timer or Core1?

Serene Timer ships an update every 7 months, and Core1 every 3 days. Most recently, Serene Timer was updated on October 23, 2026 and Core1 on October 15, 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.*