# Serialna vs K&Ö

The clearest difference is rating: K&Ö at 5.0 against Serialna's 3.5. K&Ö also leads on in-app purchases (none vs 3) and device support (3 vs 1). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Serialna sells 3 in-app purchases, starting at $24.99 per month. K&Ö asks for nothing beyond the download.

K&Ö holds the better App Store score, 5.0 against 3.5. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

Serialna ships an update every 5 months, K&Ö every 7 months. Both last shipped on October 14, 2026.

## The numbers

| Metric | Serialna | K&Ö |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (2 ratings)](https://appshunter.io/ios/app/serialna/id552327991/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/k-and-o/id6444117800/reviews)** |
| Number of ratings | **2** | 1 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 7 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 112 MB | 36 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [NIPPON STEEL Hitachi Systems Solutions, Inc.](https://appshunter.io/developer/552327994) | [Koerner & Oelkers GmbH](https://appshunter.io/developer/1652456900) |

## What reviewers say

### Serialna

[App page](https://appshunter.io/ios/app/serialna/id552327991)

This system streamlines customer flow for businesses like hospitals, pharmacies, and restaurants. It uses iPads and a printer to issue tickets, announce numbers, and manage waiting lists, with optional features for large-screen display and email notifications.

**Highlights:** Ticket issuing via iPad, Audio announcements for ticket numbers, Display of waiting list, Printer integration for dual tickets, Large screen TV output (in-app purchase), Email notifications for approaching turns (subscription)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Call by E-Mail | $24.99 | per month |
| Call by E-Mail | $239.99 | per year |
| Request Information on TV | $59.99 | one-time |


### K&Ö

[App page](https://appshunter.io/ios/app/k-and-o/id6444117800)

This app facilitates communication and management for residential living. It connects residents, owners, and property managers for seamless housing operations. Key features include notifications, damage reporting, classified ads, direct messaging, and access to documents.

**Highlights:** Important notifications and deadlines, Smartphone damage reporting with photos, Classified ads for housing needs, Direct messaging within the community, Access to important documents 24/7, Regular advice articles for residents

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Serialna free?

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

### Is K&Ö free?

K&Ö is free to download, with no in-app purchases.

### Which has better reviews, Serialna or K&Ö?

K&Ö is rated higher. Serialna averages 3.5 out of 5 from 2 ratings, while K&Ö averages 5.0 from 1 ratings.

### Do Serialna or K&Ö have ads?

Neither Serialna nor K&Ö shows ads.

### Which is updated more often, Serialna or K&Ö?

Serialna ships an update every 5 months, and K&Ö every 7 months. Most recently, Serialna was updated on October 14, 2026 and K&Ö on October 14, 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.*