# ERMIS vs Mammoth AI

The clearest difference is review sentiment: ERMIS at 50% against Mammoth AI's 0%. ERMIS also leads on update cadence (every 5 days vs every 3 weeks). Mammoth AI's advantage is rating (4.4 vs 4.0) and ratings volume (18 vs 4). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. ERMIS sells 4 in-app purchases, starting at $12.99 per month and Mammoth AI sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Mammoth AI holds the better App Store score, 4.4 against 4.0. Both are backed by a comparable volume of ratings — 4 and 18 respectively. Written reviews complicate that: 50% of ERMIS's written reviews are positive against 0% of Mammoth AI's, so the app with the better star average is not the one people write more warmly about.

ERMIS ships an update every 5 days, Mammoth AI every 3 weeks. The most recent releases landed on November 13, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | ERMIS | Mammoth AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (4 ratings)](https://appshunter.io/ios/app/ermis-client-for-hermes/id6759341434/reviews) | **[4.4 (18 ratings)](https://appshunter.io/ios/app/mammoth-ai-chatbot-assistant/id6777931840/reviews)** |
| Number of ratings | 4 | **18** |
| Positive reviews | **50.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 3 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 17 MB | 96 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | +4 |
| Developer | [Ilya Vishneuski](https://appshunter.io/developer/1878175811) | [Marut Kumar](https://appshunter.io/developer/1890094471) |

## What reviewers say

### ERMIS

[App page](https://appshunter.io/ios/app/ermis-client-for-hermes/id6759341434)

Control your self-hosted AI agent from your phone. Manage complex workflows, research topics, draft content, and solve coding problems with a secure, private mobile interface. Ideal for developers and power users seeking advanced AI capabilities beyond basic chatbots.

**Highlights:** Connect to your own Hermes Agent instance, Manage AI workflows remotely, Research topics and summarize results, Draft and edit content, Assist with coding and debugging, Organize projects and tasks

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $12.99 | per month |
| Premium | $19.99 | per month |
| Premium | $129.99 | per year |
| Premium | $199.99 | per year |


### Mammoth AI

[App page](https://appshunter.io/ios/app/mammoth-ai-chatbot-assistant/id6777931840)

This AI assistant builds a persistent memory vault from your shared information, learning and improving its skills over time. It integrates with your messaging platforms to take action and offers customizable autonomy levels for task management. Your data remains on your own infrastructure.

**Highlights:** Persistent memory vault, Self-improving skills, Messaging platform integration, Customizable autonomy levels, Runs on your own infrastructure, Open source

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hermes AI Subscription | $4.99 | per 7 days |
| Hermes AI Weekly Subscription | $9.99 | per 7 days |
| Hermes AI Yearly Subscription | $39.99 | per year |


## Frequently asked questions

### Is ERMIS free?

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

### Is Mammoth AI free?

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

### Which has better reviews, ERMIS or Mammoth AI?

Mammoth AI is rated higher. ERMIS averages 4.0 out of 5 from 4 ratings, while Mammoth AI averages 4.4 from 18 ratings.

### Do ERMIS or Mammoth AI have ads?

Neither ERMIS nor Mammoth AI shows ads.

### Which is updated more often, ERMIS or Mammoth AI?

ERMIS ships an update every 5 days, and Mammoth AI every 3 weeks. Most recently, ERMIS was updated on November 13, 2026 and Mammoth AI on November 10, 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.*