# clock4all vs Micro OPN

The clearest difference is price: Micro OPN at Free against clock4all's $0.99. Micro OPN also leads on update cadence (every 4 weeks vs every 7 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Micro OPN is free to download; clock4all costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

clock4all ships an update every 7 months, Micro OPN every 4 weeks. The most recent releases landed on November 3, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | clock4all | Micro OPN |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/clock4all/id1477082034/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 4 weeks** |
| Monetization | Paid | — |
| Size | 8 MB | 106 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Juergen Held](https://appshunter.io/developer/1435726758) | [杭州锦朋新能源有限公司](https://appshunter.io/developer/1770214362) |

## What reviewers say

### clock4all

[App page](https://appshunter.io/ios/app/clock4all/id1477082034)

This application offers a visually appealing and accessible clock experience for all users, including those with visual impairments. It features customizable clock faces, spoken time announcements in multiple languages, and an easy-to-use interface with no complex menus.

**Highlights:** Visually pleasing clock faces, Spoken time announcements, Customizable clock designs, Low battery level indicator, Alarm setting functionality, Simple, menu-free interface

**Features:** macOS Compatibility

**In-app purchases:** none


### Micro OPN

[App page](https://appshunter.io/ios/app/micro-opn/id6714471486)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is clock4all free?

clock4all costs $0.99, with no in-app purchases.

### Is Micro OPN free?

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

### Do clock4all or Micro OPN have ads?

Neither clock4all nor Micro OPN shows ads.

### Which is updated more often, clock4all or Micro OPN?

clock4all ships an update every 7 months, and Micro OPN every 4 weeks. Most recently, clock4all was updated on November 3, 2026 and Micro OPN on October 27, 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.*