# Fast Customer vs OS3

The clearest difference is in-app purchases: Fast Customer at none against OS3's 1. Fast Customer also leads on iOS requirement (8.0 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. OS3 sells 1 in-app purchase, starting at $12.99 per month. Fast Customer asks for nothing beyond the download.

## The numbers

| Metric | Fast Customer | OS3 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (3 ratings)](https://appshunter.io/ios/app/fast-customer/id1422340204/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Monthly |
| Monetization | Free | — |
| Size | 7 MB | 4 MB |
| Requires iOS | **8.0** | 18.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [FastCustomer, Inc.](https://appshunter.io/developer/877380918) | [QR LLC](https://appshunter.io/developer/1820066581) |

## What reviewers say

### Fast Customer

[App page](https://appshunter.io/ios/app/fast-customer/id1422340204)

This app eliminates the need to wait on hold when contacting customer service. Simply tap a button, and the app will call you back when a representative is available.

**Highlights:** Eliminates waiting on hold, Callback feature, Contact customer service, User-friendly interface

**In-app purchases:** none


### OS3

[App page](https://appshunter.io/ios/app/os3/id6760365662)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OS3 Pro | $12.99 | per month |


## Frequently asked questions

### Is Fast Customer free?

Fast Customer is free to download, with no in-app purchases.

### Is OS3 free?

OS3 is free to download, with in-app purchases available.

### Do Fast Customer or OS3 have ads?

Neither Fast Customer nor OS3 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.*