# Concentration Clock vs WiFi Calling

The clearest difference is iOS requirement: Concentration Clock at 12.0 against WiFi Calling's 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.

## The numbers

| Metric | Concentration Clock | WiFi Calling |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/wifi-calling-no-internet/id6806834188/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | — | Every 2 days |
| Monetization | — | Ad-supported |
| Size | 39 MB | 71 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ais Business Mexico S.A. de C.V.](https://appshunter.io/developer/1764495798) | [Susan Chikanbanjar](https://appshunter.io/developer/1787009325) |

## What reviewers say

### Concentration Clock

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

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

**In-app purchases:** none


### WiFi Calling

[App page](https://appshunter.io/ios/app/wifi-calling-no-internet/id6806834188)

This app transforms any Wi-Fi network into a private phone line, enabling direct voice and video calls between devices without a SIM card, mobile signal, or internet connection. It also facilitates local messaging and file sharing, with an optional global mode for internet-based communication.

**Highlights:** Direct Wi-Fi voice and video calls, Offline messaging with read receipts, Encrypted local file sharing, Live connection quality indicator, QR code scanning for instant connection, Optional global mode for internet calls

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

**In-app purchases:** none


## Frequently asked questions

### Is Concentration Clock free?

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

### Is WiFi Calling free?

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

### Do Concentration Clock or WiFi Calling have ads?

Both Concentration Clock and WiFi Calling show ads.

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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.*