# Time Atlas vs Sonaur

The clearest difference is monetization model: Time Atlas at free against Sonaur's free with in-app purchases. Time Atlas also leads on ratings volume (61 vs 10). Sonaur's advantage is review sentiment (100% vs 76%) and rating (5.0 vs 4.8). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Time Atlas sells 3 in-app purchases, starting at $8.99 per month and Sonaur sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Sonaur holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Time Atlas has 61 ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 76% of Time Atlas's written reviews are positive against 100% of Sonaur's.

Time Atlas ships an update every 5 days, Sonaur every 9 days. The most recent releases landed on October 17, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Time Atlas | Sonaur |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (61 ratings)](https://appshunter.io/ios/app/time-atlas-automatic-diary/id6738783076/reviews) | **[5.0 (10 ratings)](https://appshunter.io/ios/app/sonaur/id6755934796/reviews)** |
| Number of ratings | **61** | 10 |
| Positive reviews | 76.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 9 days |
| Monetization | **Free** | Free with in-app purchases |
| Size | 107 MB | 61 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 9+ | 4+ |
| Developer | [Time Atlas Labs Oy](https://appshunter.io/developer/1781744569) | [Scott Kiekbusch](https://appshunter.io/developer/1857439513) |

## What reviewers say

### Time Atlas

[App page](https://appshunter.io/ios/app/time-atlas-automatic-diary/id6738783076)

This app automatically records your daily activities, locations, and photos to create a comprehensive, private journal of your life. Effortlessly revisit past moments and rediscover your history with a curated visual timeline.

**Highlights:** Automatic location and activity capture, Daily life snapshots with full context, Explore past journeys and events, Curated daily stories with photos and maps, Private and encrypted on-device storage, Optional note-taking for added context

**Features:** Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Time Atlas Plus - Monthly | $8.99 | per month |
| Time Atlas Plus - Annual | $59.99 | per year |
| Time Atlas Plus - Lifetime | $199.99 | one-time |


### 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 Time Atlas free?

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

### Is Sonaur free?

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

### Which has better reviews, Time Atlas or Sonaur?

Sonaur is rated higher. Time Atlas averages 4.8 out of 5 from 61 ratings, while Sonaur averages 5.0 from 10 ratings.

### Do Time Atlas or Sonaur have ads?

Neither Time Atlas nor Sonaur shows ads.

### Which is updated more often, Time Atlas or Sonaur?

Time Atlas ships an update every 5 days, and Sonaur every 9 days. Most recently, Time Atlas was updated on October 17, 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.*