# Seal One vs buhl

The clearest difference is update cadence: Seal One at every 9 months against buhl's every 81 months. Seal One also leads on iOS requirement (12.0 vs 16.6). 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.

Seal One ships an update every 9 months, buhl every 81 months. The most recent releases landed on October 12, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Seal One | buhl |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 42.1% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 months** | Every 81 months |
| Monetization | — | Free |
| Size | 10 MB | 3 MB |
| Requires iOS | **12.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Seal One AG](https://appshunter.io/developer/1033883427) | [Buhl Data Service GmbH](https://appshunter.io/developer/366800332) |

## What reviewers say

### Seal One

[App page](https://appshunter.io/ios/app/seal-one/id1033883428)

**In-app purchases:** none


### buhl

[App page](https://appshunter.io/ios/app/buhlauthenticator/id1488937773)

This app generates security codes (tokens) for two-factor authentication (2FA). It adds an extra layer of security to your accounts, ensuring only you can access your data even if your password is compromised. It supports the TOTP method for various services.

**Highlights:** Two-factor authentication (2FA), Automatic security code generation, Enhanced account security, Supports TOTP method, Protects buhl:Konto and other services

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Seal One free?

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

### Is buhl free?

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

### Do Seal One or buhl have ads?

Neither Seal One nor buhl shows ads.

### Which is updated more often, Seal One or buhl?

Seal One ships an update every 9 months, and buhl every 81 months. Most recently, Seal One was updated on October 12, 2026 and buhl on October 9, 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.*