# Kastyl vs Omnis

The clearest difference is in-app purchases: Omnis at none against Kastyl's 3. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Kastyl sells 3 in-app purchases, starting at $1.99 per month. Omnis asks for nothing beyond the download.

Kastyl ships an update every 2 days, Omnis every 3 days. The most recent releases landed on October 31, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Kastyl | Omnis |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 3 days |
| Monetization | — | Freemium |
| Size | 78 MB | 93 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone | **iPhone, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [KASTET](https://appshunter.io/developer/6795452376) | [Florian Feron](https://appshunter.io/developer/6810779465) |

## What reviewers say

### Kastyl

[App page](https://appshunter.io/ios/app/kastyl-ai-usage-tracker/id6805153196)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kastyl Pro Monthly | $1.99 | per month |
| Kastyl Pro — 3 Months | $4.99 | per 3 months |
| Kastyl Pro Yearly | $14.99 | per year |


### Omnis

[App page](https://appshunter.io/ios/app/omnis-ai-usage/id6810779463)

Monitor your AI usage across different services in one convenient dashboard. Track consumption, view remaining quotas, and get notified about reset times to plan your creative sessions effectively.

**Highlights:** AI usage tracking, Quota monitoring, Usage history analysis, Reset time notifications, Home screen widgets, Multiple AI account support (Premium)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Kastyl free?

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

### Is Omnis free?

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

### Do Kastyl or Omnis have ads?

Neither Kastyl nor Omnis shows ads.

### Which is updated more often, Kastyl or Omnis?

Kastyl ships an update every 2 days, and Omnis every 3 days. Most recently, Kastyl was updated on October 31, 2026 and Omnis on October 19, 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.*