# MarkMind vs The Abyss

The clearest difference is in-app purchases: The Abyss at none against MarkMind's 2. The Abyss also leads on update cadence (every 5 days vs fortnightly). MarkMind's advantage is iOS requirement (18.0 vs 26.5). On price, ads and device support there is nothing between them.

Both are free to download. MarkMind sells 2 in-app purchases, starting at $3.99 per month. The Abyss asks for nothing beyond the download.

MarkMind ships an update fortnightly, The Abyss every 5 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | MarkMind | The Abyss |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 5 days** |
| Size | 386 MB | 11 MB |
| Requires iOS | **18.0** | 26.5 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [CHING LOK CHEN](https://appshunter.io/developer/1806996830) | [Vladimir Adamovic](https://appshunter.io/developer/1875727226) |

## What reviewers say

### MarkMind

[App page](https://appshunter.io/ios/app/markmind/id6755080065)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Member | $3.99 | per month |
| 50 Coin | $1.99 | one-time |


### 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 MarkMind free?

MarkMind 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 MarkMind or The Abyss have ads?

Neither MarkMind nor The Abyss shows ads.

### Which is updated more often, MarkMind or The Abyss?

MarkMind ships an update fortnightly, and The Abyss every 5 days. Most recently, MarkMind was updated on October 24, 2026 and The Abyss on October 25, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*