# Hermai vs Gerber Viewer

The clearest difference is in-app purchases: Hermai at none against Gerber Viewer's 3. Gerber Viewer's advantage is iOS requirement (12.0 vs 26.2). On price, ads and device support there is nothing between them.

Both are free to download. Gerber Viewer sells 3 in-app purchases, starting at $2.99 per 7 days. Hermai asks for nothing beyond the download.

## The numbers

| Metric | Hermai | Gerber Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/hermai/id6759879946/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Monetization | Free | — |
| Size | 1 MB | 49 MB |
| Requires iOS | 26.2 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Tomita Militaru](https://appshunter.io/developer/1881426001) | [CODIGITAL SOLUTIONS](https://appshunter.io/developer/1829802387) |

## What reviewers say

### Hermai

[App page](https://appshunter.io/ios/app/hermai/id6759879946)

This app provides a focused and private way to manage your TRMNL e-ink devices. View device status, inspect details, set up new devices, and retrieve API keys directly from your phone or tablet. Its minimalist interface is designed to respect your attention.

**Highlights:** View device fleet at a glance, Inspect device details and current display, Set up devices and retrieve API keys, Preview device screens, Private by design, no backend server, Monochrome, e-ink-inspired interface

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

**In-app purchases:** none


### Gerber Viewer

[App page](https://appshunter.io/ios/app/gerber-viewer-open-pcb/id6791391835)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Access | $2.99 | per 7 days |
| Pro Access | $4.99 | per month |
| Pro Access | $19.99 | per year |


## Frequently asked questions

### Is Hermai free?

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

### Is Gerber Viewer free?

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

### Do Hermai or Gerber Viewer have ads?

Neither Hermai nor Gerber Viewer shows ads.

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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.*