# Baby.Soother vs Thetis Authenticator

The clearest difference is rating: Thetis Authenticator at 3.5 against Baby.Soother's 2.0. Thetis Authenticator also leads on in-app purchases (none vs 1) and ads (none vs shown). Baby.Soother's advantage is update cadence (weekly vs every 9 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Baby.Soother sells 1 one-off in-app purchase. Thetis Authenticator asks for nothing beyond the download.

Thetis Authenticator holds the better App Store score, 3.5 against 2.0. Both are backed by a comparable volume of ratings — 1 and 4 respectively.

Baby.Soother ships an update weekly, Thetis Authenticator every 9 months. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Baby.Soother | Thetis Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (1 ratings)](https://appshunter.io/ios/app/babysoother/id1442918982/reviews) | **[3.5 (4 ratings)](https://appshunter.io/ios/app/thetis-authenticator/id6648759010/reviews)** |
| Number of ratings | 1 | **4** |
| Positive reviews | — | 60.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 9 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 37 MB | 3 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Towdah Ltd.](https://appshunter.io/developer/1236126534) | [Razzo Tech Corporation](https://appshunter.io/developer/1566501237) |

## What reviewers say

### Baby.Soother

[App page](https://appshunter.io/ios/app/babysoother/id1442918982)

This app helps parents soothe their babies to sleep with a variety of white noise sounds. It features a simple interface, adjustable timers, and background playback to allow parents to rest. Try it for free to help your little one fall asleep faster and sleep longer.

**Highlights:** White noise sounds, Adjustable timer, Infinite playback option, Background mode support, Simple user interface

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $4.99 | one-time |


### Thetis Authenticator

[App page](https://appshunter.io/ios/app/thetis-authenticator/id6648759010)

Manage your FIDO2 security keys for passwordless login and two-factor authentication. Supports NFC and Type-C connections for seamless integration across devices. Offers one-time password management for services not yet supporting FIDO2.

**Highlights:** FIDO2 passwordless login, Enhanced two-factor authentication, One-time password management, Optimized for iPad, NFC and Type-C compatibility, Cross-platform support, Phishing-resistant authentication

**In-app purchases:** none


## Frequently asked questions

### Is Baby.Soother free?

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

### Is Thetis Authenticator free?

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

### Which has better reviews, Baby.Soother or Thetis Authenticator?

Thetis Authenticator is rated higher. Baby.Soother averages 2.0 out of 5 from 1 ratings, while Thetis Authenticator averages 3.5 from 4 ratings.

### Do Baby.Soother or Thetis Authenticator have ads?

Baby.Soother shows ads; Thetis Authenticator does not.

### Which is updated more often, Baby.Soother or Thetis Authenticator?

Baby.Soother ships an update weekly, and Thetis Authenticator every 9 months. Most recently, Baby.Soother was updated on October 24, 2026 and Thetis Authenticator on October 10, 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.*