# Sudden Reminder vs Sonaur

The clearest difference is price: Sonaur at Free against Sudden Reminder's $0.99. Sudden Reminder's advantage is in-app purchases (none vs 1) and update cadence (daily vs every 9 days). On ads and device support there is nothing between them.

Sonaur is free to download; Sudden Reminder costs $0.99 up front. Sonaur sells 1 one-off in-app purchase. Sudden Reminder asks for nothing beyond the download.

Sudden Reminder ships an update daily, Sonaur every 9 days. The most recent releases landed on October 7, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Sudden Reminder | Sonaur |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[5.0 (10 ratings)](https://appshunter.io/ios/app/sonaur/id6755934796/reviews)** |
| Number of ratings | — | **10** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Every 9 days |
| Monetization | — | Free with in-app purchases |
| Size | 21 MB | 61 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 9+ | 4+ |
| Developer | [GYUGWANG LEE](https://appshunter.io/developer/1759390812) | [Scott Kiekbusch](https://appshunter.io/developer/1857439513) |

## What reviewers say

### Sudden Reminder

[App page](https://appshunter.io/ios/app/sudden-reminder/id6754346008)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sonaur

[App page](https://appshunter.io/ios/app/sonaur/id6755934796)

This app transforms real-time data, like weather or biometrics, into evolving ambient music. It offers unique, artist-composed soundscapes that adapt to your environment and personal rhythms, perfect for focus, relaxation, or sleep. Enjoy an uninterrupted, personalized listening experience.

**Highlights:** Real-time weather-driven music, Artist-composed sonic palettes, Biometric sound shaping (Apple Watch), Binaural beats for focus/sleep, Sleep timer, Lock screen playback

**Features:** Family Sharing, Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sonaur Health Mode | $19.99 | one-time |


## Frequently asked questions

### Is Sudden Reminder free?

Sudden Reminder costs $0.99, with no in-app purchases.

### Is Sonaur free?

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

### Do Sudden Reminder or Sonaur have ads?

Neither Sudden Reminder nor Sonaur shows ads.

### Which is updated more often, Sudden Reminder or Sonaur?

Sudden Reminder ships an update daily, and Sonaur every 9 days. Most recently, Sudden Reminder was updated on October 7, 2026 and Sonaur on October 3, 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.*