# Open Agent vs The Abyss

The clearest difference is in-app purchases: The Abyss at none against Open Agent's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Open Agent sells 2 in-app purchases, starting at $4.99 per 7 days. The Abyss asks for nothing beyond the download.

Open Agent ships an update every 9 days, The Abyss every 5 days. Both last shipped on October 25, 2026.

## The numbers

| Metric | Open Agent | The Abyss |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 5 days** |
| Size | 101 MB | 11 MB |
| Requires iOS | **26.0** | 26.5 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Hoang Nguyen Vu](https://appshunter.io/developer/1883922584) | [Vladimir Adamovic](https://appshunter.io/developer/1875727226) |

## What reviewers say

### Open Agent

[App page](https://appshunter.io/ios/app/open-agent/id6760329760)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OpenAgent Pro Weekly | $4.99 | per 7 days |
| OpenAgent Pro Yearly | $99.99 | per year |


### The Abyss

[App page](https://appshunter.io/ios/app/the-abyss-hermes-agent/id6785435995)

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

**In-app purchases:** none


## Frequently asked questions

### Is Open Agent free?

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

### Is The Abyss free?

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

### Do Open Agent or The Abyss have ads?

Neither Open Agent nor The Abyss shows ads.

### Which is updated more often, Open Agent or The Abyss?

Open Agent ships an update every 9 days, and The Abyss every 5 days. Most recently, Open Agent was updated on October 25, 2026 and The Abyss on October 25, 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.*