# Contacts Address Book vs GATEWatch Server

The clearest difference is in-app purchases: GATEWatch Server at none against Contacts Address Book's 4. GATEWatch Server also leads on device support (4 vs 1). On price, update cadence, ads and iOS requirement there is nothing between them.

Both are free to download. Contacts Address Book sells 3 in-app purchases, starting at $3.99 per month. GATEWatch Server asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 4 weeks. The most recent releases landed on October 17, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Contacts Address Book | GATEWatch Server |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (52 ratings)](https://appshunter.io/ios/app/contacts-address-book-amicu/id1481868897/reviews)** | — |
| Number of ratings | **52** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 4 weeks | Every 4 weeks |
| Monetization | Freemium | — |
| Size | 29 MB | 24 MB |
| Requires iOS | 16.0 | **15.6** |
| Devices | iPhone | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Kai Oelfke](https://appshunter.io/developer/644779478) | [Volker Lehnen](https://appshunter.io/developer/1528760360) |

## What reviewers say

### Contacts Address Book

[App page](https://appshunter.io/ios/app/contacts-address-book-amicu/id1481868897)

This app helps you nurture your personal relationships by reminding you to stay in touch and celebrate important birthdays. It offers a private and offline experience, allowing you to manage contacts and set custom reminders to keep your social circle strong.

**Highlights:** Birthday reminders, Keep-in-touch reminders, Contact management, Offline functionality, Customizable notifications, Widgets

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $3.99 | per month |
| Premium | $29.99 | per year |
| Premium | $29.99 | per year |


### GATEWatch Server

[App page](https://appshunter.io/ios/app/gatewatch-server/id1577530184)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Contacts Address Book free?

Contacts Address Book is free to download, with in-app purchases available.

### Is GATEWatch Server free?

GATEWatch Server is free to download, with no in-app purchases.

### Do Contacts Address Book or GATEWatch Server have ads?

Neither Contacts Address Book nor GATEWatch Server shows ads.

### Which is updated more often, Contacts Address Book or GATEWatch Server?

Contacts Address Book ships an update every 4 weeks, and GATEWatch Server every 4 weeks. Most recently, Contacts Address Book was updated on October 17, 2026 and GATEWatch Server on October 2, 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.*