# Viewer by SEPPmail vs STODIAdiserv

The clearest difference is update cadence: STODIAdiserv at monthly against Viewer by SEPPmail's every 13 months. Viewer by SEPPmail's advantage is iOS requirement (12.4 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Viewer by SEPPmail ships an update every 13 months, STODIAdiserv monthly. The most recent releases landed on October 8, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Viewer by SEPPmail | STODIAdiserv |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/viewer-by-seppmail/id6446402452/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Monthly** |
| Monetization | Free | — |
| Size | 19 MB | 34 MB |
| Requires iOS | **12.4** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SEPPmail AG](https://appshunter.io/developer/586785754) | [Stodia GmbH](https://appshunter.io/developer/1612046810) |

## What reviewers say

### Viewer by SEPPmail

[App page](https://appshunter.io/ios/app/viewer-by-seppmail/id6446402452)

This application allows you to receive, decrypt, and read secure emails with "secure-email.html" attachments. It is designed for users who have received encrypted messages sent via a SEPPmail Appliance.

**Highlights:** Receive encrypted emails, Decrypt secure attachments, Read secure email content, Supports SEPPmail Appliance encryption

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

**In-app purchases:** none


### STODIAdiserv

[App page](https://appshunter.io/ios/app/stodiadiserv/id6754980591)

**In-app purchases:** none


## Frequently asked questions

### Is Viewer by SEPPmail free?

Viewer by SEPPmail is free to download, with no in-app purchases.

### Is STODIAdiserv free?

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

### Do Viewer by SEPPmail or STODIAdiserv have ads?

Neither Viewer by SEPPmail nor STODIAdiserv shows ads.

### Which is updated more often, Viewer by SEPPmail or STODIAdiserv?

Viewer by SEPPmail ships an update every 13 months, and STODIAdiserv monthly. Most recently, Viewer by SEPPmail was updated on October 8, 2026 and STODIAdiserv on October 15, 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.*