# Calling Card vs Prefix App

The clearest difference is price: Prefix App at Free against Calling Card's $1.99. Prefix App also leads on rating (5.0 vs 3.2) and update cadence (every 3 weeks vs every 3 months). Calling Card's advantage is in-app purchases (none vs 2) and ads (none vs shown). On ratings volume and device support there is nothing between them.

Prefix App is free to download; Calling Card costs $1.99 up front. Prefix App sells 2 one-off in-app purchases. Calling Card asks for nothing beyond the download.

Prefix App holds the better App Store score, 5.0 against 3.2. Both are backed by a comparable volume of ratings — 6 and 3 respectively. Written reviews complicate that: 62% of Calling Card's written reviews are positive against 37% of Prefix App's, so the app with the better star average is not the one people write more warmly about.

Calling Card ships an update every 3 months, Prefix App every 3 weeks. The most recent releases landed on November 6, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Calling Card | Prefix App |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [3.2 (6 ratings)](https://appshunter.io/ios/app/calling-card/id291900272/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/prefix-app-new/id1140903469/reviews)** |
| Number of ratings | **6** | 3 |
| Positive reviews | **62.4% of reviews** | 37.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 3 MB | 13 MB |
| Requires iOS | **11.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Andreas Amann](https://appshunter.io/developer/291900275) | [Alain Lima](https://appshunter.io/developer/789421888) |

## What reviewers say

### Calling Card

[App page](https://appshunter.io/ios/app/calling-card/id291900272)

This app helps you save money on international calls by managing calling cards and carrier prefixes. It can automatically select the best card for you based on the number you dial. It also supports PBX routing and Skype To Go calls.

**Highlights:** Manage multiple calling card accounts, Automatic card selection, Dial from contacts or recent calls, Support for international prefixes, Flexible call detail setup, Display local time for contacts

**In-app purchases:** none

**What reviewers like**

- 👍 Simple and intuitive interface
- 💰 Saves money on long-distance and international calls
- 🔧 Highly customizable calling card configurations
- 📱 Easy integration with iPhone contacts
- ⏱️ Displays local time at calling destination

**What reviewers complain about**

- 🐛 Creates duplicate contacts in address book
- 🐛 Crashes on certain iOS versions (3.1, 4.x, 7.x)
- ❌ Cannot dial # or * characters
- ⏱️ Very slow dialing speed with long DTMF tones
- 🎨 Ugly and clunky user interface

**Reported bugs**

- Duplicate contact creation with dialing codes
- App crashes on iOS 3.1, 4.x, 7.x and later versions
- Cannot input # or * characters in custom numbers
- Hangs when selecting contacts from list
- Ignores pause (,) between numbers

**Requested features**

- Support for # and * character input
- Voice activation/VoiceOver compatibility
- Direct dialing from contacts app
- Faster DTMF dialing speed
- Favorites-only contact selection


### Prefix App

[App page](https://appshunter.io/ios/app/prefix-app-new/id1140903469)

Easily add prefixes to phone numbers without altering your contacts. Ideal for business users, it offers extensive customization for prefixes and your address book. Includes Siri and Apple Watch support for seamless integration.

**Highlights:** Add prefixes without editing contacts, Multiple customizable prefixes, Full and customizable address book, Recent calls list, Siri support, Today widget and Apple Watch app

**Features:** macOS Compatibility, Family Sharing, Siri integration, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Call from Apple Watch | $0.99 | one-time |
| Remove ads | $1.99 | one-time |


## Frequently asked questions

### Is Calling Card free?

Calling Card costs $1.99, with no in-app purchases.

### Is Prefix App free?

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

### Which has better reviews, Calling Card or Prefix App?

Prefix App is rated higher. Calling Card averages 3.2 out of 5 from 6 ratings, while Prefix App averages 5.0 from 3 ratings.

### Do Calling Card or Prefix App have ads?

Prefix App shows ads; Calling Card does not.

### Which is updated more often, Calling Card or Prefix App?

Calling Card ships an update every 3 months, and Prefix App every 3 weeks. Most recently, Calling Card was updated on November 6, 2026 and Prefix App on November 4, 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.*