# Contacts Prefix Fixer vs One

The clearest difference is in-app purchases: Contacts Prefix Fixer at none against One's 1. Contacts Prefix Fixer also leads on device support (3 vs 1) and iOS requirement (12.0 vs 17.0). On price and ads there is nothing between them.

Both are free to download. One sells 1 one-off in-app purchase. Contacts Prefix Fixer asks for nothing beyond the download.

## The numbers

| Metric | Contacts Prefix Fixer | One |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/contacts-prefix-fixer/id1635039737/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 14 months | — |
| Monetization | Free | — |
| Size | 29 MB | 2 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Cuong Luu Hung](https://appshunter.io/developer/1634793639) | [忠政 衣](https://appshunter.io/developer/1885174265) |

## What reviewers say

### Contacts Prefix Fixer

[App page](https://appshunter.io/ios/app/contacts-prefix-fixer/id1635039737)

Easily edit the prefix number for your contacts. Add country codes or other prefixes to all your phone numbers in one go. This utility simplifies managing international or specific dialing formats for your contacts.

**Highlights:** Edit contact phone number prefixes, Add country codes, Batch prefix modification, Easy to use interface

**Features:** macOS Compatibility

**In-app purchases:** none


### One

[App page](https://appshunter.io/ios/app/one-tap-scanner/id6808968161)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Member | $9.99 | one-time |


## Frequently asked questions

### Is Contacts Prefix Fixer free?

Contacts Prefix Fixer is free to download, with no in-app purchases.

### Is One free?

One is free to download, with in-app purchases available.

### Do Contacts Prefix Fixer or One have ads?

Neither Contacts Prefix Fixer nor One shows 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.*