# J vs Sauna Clock

The clearest difference is price: J at Free against Sauna Clock's $1.99. J also leads on in-app purchases (none vs 1) and update cadence (fortnightly vs monthly). On ads there is nothing between them.

J is free to download; Sauna Clock costs $1.99 up front. Sauna Clock sells 1 one-off in-app purchase. J asks for nothing beyond the download.

J ships an update fortnightly, Sauna Clock monthly. The most recent releases landed on June 1, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | J | Sauna Clock |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[2.6 (5 ratings)](https://appshunter.io/ios/app/j-tech-digital-control/id1572720298/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Monthly |
| Monetization | Free | — |
| Size | 59 MB | 11 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [J-Tech Digital, Inc](https://appshunter.io/developer/1147761166) | [CAEN Co., Ltd.](https://appshunter.io/developer/1770546611) |

## What reviewers say

### J

[App page](https://appshunter.io/ios/app/j-tech-digital-control/id1572720298)

Easily manage and configure compatible J-Tech Digital A/V equipment directly from your mobile device. Control routing settings, save configurations, and connect devices without needing a physical keyboard or mouse.

**Highlights:** Control routing settings, Manage multiple devices, Remember device settings, Save/Load routing settings, Configure A/V equipment, Connect devices remotely

**Features:** macOS Compatibility

**In-app purchases:** none


### Sauna Clock

[App page](https://appshunter.io/ios/app/sauna-clock-12-min-timer/id6777684217)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $0.99 | one-time |


## Frequently asked questions

### Is J free?

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

### Is Sauna Clock free?

Sauna Clock costs $1.99, and also offers in-app purchases.

### Do J or Sauna Clock have ads?

Neither J nor Sauna Clock shows ads.

### Which is updated more often, J or Sauna Clock?

J ships an update fortnightly, and Sauna Clock monthly. Most recently, J was updated on June 1, 2026 and Sauna Clock on September 21, 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.*