# Karellen vs Undralingur

The clearest difference is in-app purchases: Karellen at none against Undralingur's 1. Undralingur's advantage is update cadence (fortnightly vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Undralingur sells 1 in-app purchase, starting at $9.99 per month. Karellen asks for nothing beyond the download.

Karellen ships an update every 2 months, Undralingur fortnightly. The most recent releases landed on October 24, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Karellen | Undralingur |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/undralingur/id6474342185/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 35 MB | 51 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [InfoMentor P.O.D.B AB](https://appshunter.io/developer/1791734933) | [Undralingur ehf.](https://appshunter.io/developer/1719994822) |

## What reviewers say

### Karellen

[App page](https://appshunter.io/ios/app/karellen/id965769425)

This app facilitates communication between preschools and parents. Parents can view their child's schedule, menu, and photos, while teachers can manage attendance, send messages, and share pictures. It requires login credentials from a participating preschool.

**Highlights:** View weekly menu, Access school calendar, Receive child's photos, Mark child absent/sick, Send direct messages, Track school attendance

**In-app purchases:** none


### Undralingur

[App page](https://appshunter.io/ios/app/undralingur/id6474342185)

An interactive reading platform for young Icelandic readers. It offers dynamic, audio-visual stories where characters respond to the reader, promoting engagement and improving literacy skills. Features include adjustable reading support and personalized story experiences.

**Highlights:** Interactive stories with talking characters, Adjustable reading support (read-aloud, highlighting), Personalized story experiences, Character customization, Free book samples, Growing library of Icelandic books

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mánaðaráskrift | $9.99 | per month |


## Frequently asked questions

### Is Karellen free?

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

### Is Undralingur free?

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

### Do Karellen or Undralingur have ads?

Neither Karellen nor Undralingur shows ads.

### Which is updated more often, Karellen or Undralingur?

Karellen ships an update every 2 months, and Undralingur fortnightly. Most recently, Karellen was updated on October 24, 2026 and Undralingur on October 15, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*