# Klar Til Proverne vs O

Klar Til Proverne and O are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Klar Til Proverne ships an update every 5 days, O every 4 days. The most recent releases landed on October 19, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Klar Til Proverne | O |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 4 days** |
| Size | 16 MB | 57 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Thai Phan Dinh](https://appshunter.io/developer/1896314325) | [PUFin ID A/S](https://appshunter.io/developer/1614643757) |

## What reviewers say

### Klar Til Proverne

[App page](https://appshunter.io/ios/app/klar-til-proverne/id6766678924)

**In-app purchases:** none


### O

[App page](https://appshunter.io/ios/app/o-key-authenticator/id6776659466)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Klar Til Proverne free?

Klar Til Proverne is free to download, with no in-app purchases.

### Is O free?

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

### Do Klar Til Proverne or O have ads?

Neither Klar Til Proverne nor O shows ads.

### Which is updated more often, Klar Til Proverne or O?

Klar Til Proverne ships an update every 5 days, and O every 4 days. Most recently, Klar Til Proverne was updated on October 19, 2026 and O on October 10, 2026.

---

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