# OPUS4Business vs JT Clock

The clearest difference is update cadence: OPUS4Business at monthly against JT Clock's every 5 months. JT Clock's advantage is iOS requirement (13.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

OPUS4Business ships an update monthly, JT Clock every 5 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | OPUS4Business | JT Clock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 months |
| Size | 135 MB | 101 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [APPLICATION OF INTERNET NEW TECHNOLOGIES CC](https://appshunter.io/developer/1182868464) | [Jarrison Systems CC](https://appshunter.io/developer/1560624413) |

## What reviewers say

### OPUS4Business

[App page](https://appshunter.io/ios/app/opus4business/id1254461061)

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

**In-app purchases:** none


### JT Clock

[App page](https://appshunter.io/ios/app/jt-clock/id1560624411)

**In-app purchases:** none


## Frequently asked questions

### Is OPUS4Business free?

OPUS4Business is free to download, with no in-app purchases.

### Is JT Clock free?

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

### Do OPUS4Business or JT Clock have ads?

Neither OPUS4Business nor JT Clock shows ads.

### Which is updated more often, OPUS4Business or JT Clock?

OPUS4Business ships an update monthly, and JT Clock every 5 months. Most recently, OPUS4Business was updated on November 6, 2026 and JT Clock on November 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.*