Seal One vs Viessmann Access
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Seal One
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Seal One App allows you to use your Seal One 7300 pro or 8300 pro. Highest security goes mobile. Now you can authorize Seal One transactions on the go. Verify the transaction on the security device and confirm it by pushing the button. More information: https://www.seal-one.com/devices
Viessmann Access
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Viessmann Access app - The secured and simple solution for passwordless authentication to Viessmann web applications. Viessmann Access is the app for strong authentication to Viessmann web applications without entering a password or second factor. After setting up and registering your account, you receive a push notification when you log in, which is released by you using your secure PIN or, depending on the device, biometric security features such as facial recognition or fingerprint. And you are already logged in.
Screenshots
Verdict
The clearest difference is update cadence: Viessmann Access at every 4 months against Seal One's every 9 months. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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, Viessmann Access every 4 months. The most recent releases landed on October 29, 2026 and October 27, 2026 respectively.
| Parameter | Seal One | Viessmann Access |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 9 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 | 12 |
| Further details — not scored | ||
| Size | 10 MB | 52 MB |
| Age rating | 4+ | 4+ |
| Developer | Seal One AG | Viessmann IT Service GmbH |
In-app purchases
Seal One
No in-app purchases
Viessmann Access
No in-app purchases
Questions
Is Seal One free?
Is Viessmann Access free?
Do Seal One or Viessmann Access have ads?
Which is updated more often, Seal One or Viessmann Access?
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