# ARKA AI vs Njn

The clearest difference is ads: ARKA AI at none against Njn's shown. ARKA AI also leads on iOS requirement (17.0 vs 26.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. ARKA AI sells 7 in-app purchases, starting at $14.99 per month and Njn sells 1 in-app purchase, starting at $14.99 per month. Whichever you choose, the download price is not the number that matters.

ARKA AI ships an update every 4 days, Njn weekly. The most recent releases landed on October 13, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | ARKA AI | Njn |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 4 days** | Weekly |
| Size | 3 MB | 55 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 17+ | 17+ |
| Developer | [ARKA Systems LLC](https://appshunter.io/developer/1873596855) | [Michael Murphy](https://appshunter.io/developer/1358529998) |

## What reviewers say

### ARKA AI

[App page](https://appshunter.io/ios/app/arka-ai/id6758553985)

**Features:** macOS Compatibility

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus Monthly | $14.99 | per month |
| Pro Monthly | $29.99 | per month |
| Plus Annual | $99.99 | per year |
| Pro Annual | $199.99 | per year |
| 200 Credits Pack | $4.99 | one-time |
| 600 Credits Pack | $12.99 | one-time |
| 2000 Credits Pack | $34.99 | one-time |


### Njn

[App page](https://appshunter.io/ios/app/njn/id6759216016)

**Features:** macOS Compatibility, Family Sharing, Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Njn Premium | $14.99 | per month |


## Frequently asked questions

### Is ARKA AI free?

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

### Is Njn free?

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

### Do ARKA AI or Njn have ads?

Njn shows ads; ARKA AI does not.

### Which is updated more often, ARKA AI or Njn?

ARKA AI ships an update every 4 days, and Njn weekly. Most recently, ARKA AI was updated on October 13, 2026 and Njn on October 18, 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.*