# Odin KJ vs Authenticator App++

The clearest difference is in-app purchases: Odin KJ at none against Authenticator App++'s 4. Odin KJ also leads on iOS requirement (13.0 vs 15.1). Authenticator App++'s advantage is update cadence (every 2 months vs every 38 months). On price, ads and device support there is nothing between them.

Both are free to download. Authenticator App++ sells 4 in-app purchases, starting at $5.99 per 7 days. Odin KJ asks for nothing beyond the download.

Odin KJ ships an update every 38 months, Authenticator App++ every 2 months. The most recent releases landed on October 2, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Odin KJ | Authenticator App++ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 38 months | **Every 2 months** |
| Size | 87 MB | 28 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KJ Klimateknik AS](https://appshunter.io/developer/1545539440) | [WuHan ChongYue Future Technology Co., Ltd.](https://appshunter.io/developer/1751681836) |

## What reviewers say

### Odin KJ

[App page](https://appshunter.io/ios/app/odin-kj/id1545539438)

**In-app purchases:** none


### Authenticator App++

[App page](https://appshunter.io/ios/app/authenticator-app-plus-plus/id6504280340)

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Authenticator PRO Weekly | $5.99 | per 7 days |
| Authenticator App PRO Monthly | $9.99 | per month |
| Authenticator Pro Offer | $19.99 | per year |
| Authenticator PRO Yearly | $39.99 | per year |


## Frequently asked questions

### Is Odin KJ free?

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

### Is Authenticator App++ free?

Authenticator App++ is free to download, with in-app purchases available.

### Do Odin KJ or Authenticator App++ have ads?

Neither Odin KJ nor Authenticator App++ shows ads.

### Which is updated more often, Odin KJ or Authenticator App++?

Odin KJ ships an update every 38 months, and Authenticator App++ every 2 months. Most recently, Odin KJ was updated on October 2, 2026 and Authenticator App++ on September 30, 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.*