# KTern.AI vs aNinja AI

The clearest difference is update cadence: KTern.AI at every 3 days against aNinja AI's fortnightly. KTern.AI also leads on iOS requirement (12.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

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

KTern.AI ships an update every 3 days, aNinja AI fortnightly. Both last shipped on November 8, 2026.

## The numbers

| Metric | KTern.AI | aNinja AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Fortnightly |
| Size | 47 MB | 47 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Kaar](https://appshunter.io/developer/1688000543) | [aNinja](https://appshunter.io/developer/1728887194) |

## What reviewers say

### KTern.AI

[App page](https://appshunter.io/ios/app/kternai/id6673897527)

**Features:** macOS Compatibility

**In-app purchases:** none


### aNinja AI

[App page](https://appshunter.io/ios/app/aninja-ai/id6738989989)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is KTern.AI free?

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

### Is aNinja AI free?

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

### Do KTern.AI or aNinja AI have ads?

Neither KTern.AI nor aNinja AI shows ads.

### Which is updated more often, KTern.AI or aNinja AI?

KTern.AI ships an update every 3 days, and aNinja AI fortnightly. Most recently, KTern.AI was updated on November 8, 2026 and aNinja AI on November 8, 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.*