# ERMIS vs Sigmy

The clearest difference is update cadence: ERMIS at every 5 days against Sigmy's every 2 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. ERMIS sells 4 in-app purchases, starting at $12.99 per month and Sigmy sells 3 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

ERMIS ships an update every 5 days, Sigmy every 2 weeks. The most recent releases landed on November 11, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | ERMIS | Sigmy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (4 ratings)](https://appshunter.io/ios/app/ermis-client-for-hermes/id6759341434/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 2 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 17 MB | 3.2 GB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Ilya Vishneuski](https://appshunter.io/developer/1878175811) | [SIGMY GROUP PTY LTD](https://appshunter.io/developer/1894404124) |

## 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 |


### Sigmy

[App page](https://appshunter.io/ios/app/sigmy/id6762498646)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $5.99 | per month |
| Pro Yearly | $39.99 | per year |
| Lifetime Pro | $79.99 | one-time |


## Frequently asked questions

### Is ERMIS free?

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

### Is Sigmy free?

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

### Do ERMIS or Sigmy have ads?

Neither ERMIS nor Sigmy shows ads.

### Which is updated more often, ERMIS or Sigmy?

ERMIS ships an update every 5 days, and Sigmy every 2 weeks. Most recently, ERMIS was updated on November 11, 2026 and Sigmy on October 31, 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.*