# Concentration Clock vs API Event Notify

The clearest difference is ads: API Event Notify at none against Concentration Clock's shown. Concentration Clock's advantage is iOS requirement (12.0 vs 15.6). On price, 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.

## The numbers

| Metric | Concentration Clock | API Event Notify |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/api-event-notify/id6748003043/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | — | Every 6 months |
| Monetization | — | Free |
| Size | 39 MB | 2 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ais Business Mexico S.A. de C.V.](https://appshunter.io/developer/1764495798) | [凤明 李](https://appshunter.io/developer/1805559726) |

## What reviewers say

### Concentration Clock

[App page](https://appshunter.io/ios/app/concentration-clock/id6740191750)

**Features:** macOS Compatibility

**In-app purchases:** none


### API Event Notify

[App page](https://appshunter.io/ios/app/api-event-notify/id6748003043)

Receive real-time event notifications from third-party systems directly to your device. Manage notification statuses and access comprehensive API documentation for seamless integration. Ideal for developers and operations engineers needing flexible message push solutions.

**Highlights:** Real-time push notifications, API key management, Notification status management, Complete API documentation, Multi-language support, RESTful API calls

**In-app purchases:** none


## Frequently asked questions

### Is Concentration Clock free?

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

### Is API Event Notify free?

API Event Notify is free to download, with no in-app purchases.

### Do Concentration Clock or API Event Notify have ads?

Concentration Clock shows ads; API Event Notify does not.

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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.*