# SOTP Authenticator vs Watch R6

The clearest difference is in-app purchases: Watch R6 at none against SOTP Authenticator's 2. Watch R6 also leads on iOS requirement (10.0 vs 13.0). SOTP Authenticator's advantage is update cadence (every 5 months vs every 32 months). On price, ads and device support there is nothing between them.

Both are free to download. SOTP Authenticator sells 2 one-off in-app purchases. Watch R6 asks for nothing beyond the download.

SOTP Authenticator ships an update every 5 months, Watch R6 every 32 months. The most recent releases landed on October 3, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | SOTP Authenticator | Watch R6 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 32 months |
| Size | 20 MB | 11 MB |
| Requires iOS | 13.0 | **10.0** |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Anzhela Baroyan](https://appshunter.io/developer/1526016553) | [SKG Health Technologies Co., Ltd.](https://appshunter.io/developer/928994499) |

## What reviewers say

### SOTP Authenticator

[App page](https://appshunter.io/ios/app/sotp-authenticator/id1526068202)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One dollar donation | $0.99 | one-time |
| Five dollar donation | $4.99 | one-time |


### Watch R6

[App page](https://appshunter.io/ios/app/watch-r6/id6465206862)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SOTP Authenticator free?

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

### Is Watch R6 free?

Watch R6 is free to download, with no in-app purchases.

### Do SOTP Authenticator or Watch R6 have ads?

Neither SOTP Authenticator nor Watch R6 shows ads.

### Which is updated more often, SOTP Authenticator or Watch R6?

SOTP Authenticator ships an update every 5 months, and Watch R6 every 32 months. Most recently, SOTP Authenticator was updated on October 3, 2026 and Watch R6 on October 14, 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.*