# Only Contacts vs Concentration Clock

The clearest difference is price: Concentration Clock at Free against Only Contacts's $5.99. Concentration Clock also leads on iOS requirement (12.0 vs 16.0). On ads, in-app purchases and device support there is nothing between them.

Concentration Clock is free to download; Only Contacts costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Only Contacts | Concentration Clock |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/only-contacts/id1551488211/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | — |
| Monetization | Paid | — |
| Size | 4 MB | 39 MB |
| Requires iOS | 16.0 | **12.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ensar Kilic](https://appshunter.io/developer/1550445495) | [Ais Business Mexico S.A. de C.V.](https://appshunter.io/developer/1764495798) |

## What reviewers say

### Only Contacts

[App page](https://appshunter.io/ios/app/only-contacts/id1551488211)

Organize, back up, and export your iPhone contacts with this offline utility. It offers robust editing, secure AES-256 encrypted backups, and multiple export formats like Excel and PDF. Manage duplicates and filter contacts efficiently for a cleaner address book.

**Highlights:** View, edit, delete, and create contacts, Create and restore VCF backups, AES-256 encrypted backups, Export to Excel, PDF, and JSON, Find and merge duplicate contacts, Filter contacts by various criteria, QR code and digital contact card sharing

**In-app purchases:** none


### Concentration Clock

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

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

**In-app purchases:** none


## Frequently asked questions

### Is Only Contacts free?

Only Contacts costs $5.99, with no in-app purchases.

### Is Concentration Clock free?

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

### Do Only Contacts or Concentration Clock have ads?

Both Only Contacts and Concentration Clock 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.*