# Atomic Hermes vs Vellum Assistant

The clearest difference is review sentiment: Vellum Assistant at 80% against Atomic Hermes's 0%. Vellum Assistant also leads on rating (4.4 vs 2.3) and in-app purchases (none vs 3). Atomic Hermes's advantage is iOS requirement (13.4 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Atomic Hermes sells 3 in-app purchases, starting at $19.99 per month. Vellum Assistant asks for nothing beyond the download.

Vellum Assistant holds the better App Store score, 4.4 against 2.3. That said, the two scores are not equally well evidenced: Vellum Assistant has 17 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 0% of Atomic Hermes's written reviews are positive against 80% of Vellum Assistant's.

Atomic Hermes ships an update every 11 days, Vellum Assistant every 4 days. The most recent releases landed on September 7, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Atomic Hermes | Vellum Assistant |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.3 (3 ratings)](https://appshunter.io/ios/app/atomic-hermes/id6759154616/reviews) | **[4.4 (17 ratings)](https://appshunter.io/ios/app/vellum-assistant/id6759934423/reviews)** |
| Number of ratings | 3 | **17** |
| Positive reviews | 0.0% of reviews | **80.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 11 days | **Every 4 days** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 75 MB | 9 MB |
| Requires iOS | **13.4** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Atomic Mail](https://appshunter.io/developer/1831027051) | [Vocify Inc.](https://appshunter.io/developer/1881735501) |

## What reviewers say

### Atomic Hermes

[App page](https://appshunter.io/ios/app/atomic-hermes/id6759154616)

This AI agent performs complex, multi-step tasks autonomously on your behalf. It plans, reasons, and executes actions across devices, offering smart web research, content generation, and code assistance. Your data remains private as the agent runs on your own hardware.

**Highlights:** Autonomous task execution, Intelligent AI agents, Smart web search and research, Content writing and editing, Code debugging and problem-solving, Task planning and scheduling, Cross-device compatibility

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Atomic Bot Monthly | $19.99 | per month |
| 10 Credits | $10.00 | one-time |
| 30 Credits | $30.00 | one-time |


### Vellum Assistant

[App page](https://appshunter.io/ios/app/vellum-assistant/id6759934423)

This AI assistant learns your work habits and thought processes to help you stay on top of tasks. It syncs across devices, providing quick summaries of communications and access to past notes. Over time, it becomes an indispensable teammate.

**Highlights:** Learns user work habits, Syncs across Mac, iPhone, and web, Summarizes Slack, email, and meetings, Remembers forgotten tasks and follow-ups, Accesses past notes and thoughts, Improves with continued use

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

**In-app purchases:** none


## Frequently asked questions

### Is Atomic Hermes free?

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

### Is Vellum Assistant free?

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

### Which has better reviews, Atomic Hermes or Vellum Assistant?

Vellum Assistant is rated higher. Atomic Hermes averages 2.3 out of 5 from 3 ratings, while Vellum Assistant averages 4.4 from 17 ratings.

### Do Atomic Hermes or Vellum Assistant have ads?

Neither Atomic Hermes nor Vellum Assistant shows ads.

### Which is updated more often, Atomic Hermes or Vellum Assistant?

Atomic Hermes ships an update every 11 days, and Vellum Assistant every 4 days. Most recently, Atomic Hermes was updated on September 7, 2026 and Vellum Assistant on September 16, 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.*