# ORTEC Clock app vs 21Seven

The clearest difference is update cadence: 21Seven at every 2 months against ORTEC Clock app's every 25 months. 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.

ORTEC Clock app ships an update every 25 months, 21Seven every 2 months. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | ORTEC Clock app | 21Seven |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 25 months | **Every 2 months** |
| Size | 17 MB | 60 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [ORTEC](https://appshunter.io/developer/814502934) | [21south](https://appshunter.io/developer/1263850897) |

## What reviewers say

### ORTEC Clock app

[App page](https://appshunter.io/ios/app/ortec-clock-app/id6451249725)

**In-app purchases:** none


### 21Seven

[App page](https://appshunter.io/ios/app/21seven/id6738125577)

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

**In-app purchases:** none


## Frequently asked questions

### Is ORTEC Clock app free?

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

### Is 21Seven free?

21Seven is free to download, with no in-app purchases.

### Do ORTEC Clock app or 21Seven have ads?

Neither ORTEC Clock app nor 21Seven shows ads.

### Which is updated more often, ORTEC Clock app or 21Seven?

ORTEC Clock app ships an update every 25 months, and 21Seven every 2 months. Most recently, ORTEC Clock app was updated on October 28, 2026 and 21Seven on October 25, 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.*