# Serene Timer vs FertilFlow

The clearest difference is update cadence: FertilFlow at every 3 days against Serene Timer's every 7 months. FertilFlow 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, FertilFlow every 3 days. The most recent releases landed on October 6, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Serene Timer | FertilFlow |
| --- | --- | --- |
| 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 | 48 MB |
| Requires iOS | 17.5 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Sebastian Ruhleder](https://appshunter.io/developer/1781085513) | [Roy Wynant](https://appshunter.io/developer/1888912999) |

## 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


### FertilFlow

[App page](https://appshunter.io/ios/app/fertilflow/id6762568735)

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

**In-app purchases:** none


## Frequently asked questions

### Is Serene Timer free?

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

### Is FertilFlow free?

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

### Do Serene Timer or FertilFlow have ads?

Neither Serene Timer nor FertilFlow shows ads.

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

Serene Timer ships an update every 7 months, and FertilFlow every 3 days. Most recently, Serene Timer was updated on October 6, 2026 and FertilFlow 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.*