173K reviews
Content rating
PEGI 3
1M+
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Content rating
PEGI 3
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About this app

The Postbank BestSign app is a separate app for securely authorizing orders in online banking. The app only includes the BestSign security procedure. Create and activate BestSign once, then you are ready for authorizing.

You can log into the BestSign app with your password or – if available – conveniently with your biometric data.

This app is useful if you do not want to use the Postbank app, as you mainly carry out your online banking on the computer and only need a security procedure for order authorization.

Tip: Try the Postbank app. Then you have your online banking and security procedures conveniently and securely in one place.

DATA PRIVACY
Protecting your data is our highest priority. Find more information in our data privacy policy.
The additional app to authorizie orders securely.
Updated on
Aug 24, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • No data collected
    Learn more about how developers declare collection
  • Data is encrypted in transit
  • Data can’t be deleted

Ratings and reviews

168K reviews
vitaly rogozhin
August 3, 2022
a bad one. every 5 min or so it is automatically turning out. a nightmare if one works with several transactions at once. therefore you have to go through the process of identification every 5 minutes. worst experience ever. the technical support is as always can't do anything, which adds to the frustration. One wonders if the one of the top banks in Germany can't get it right, what would you expect in other ones? compared to my Canadian experience, 2 out of 10 for Postbank.
19 people found this review helpful
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A Google user
August 23, 2019
As I'm getting older and my eyes and fingers are less able to work with a smartphone, and don't want a tablet, I would wish that there could be a Finanzassistent (and Best Sign!!!) App for the PC like Sparda-Bank offers. I don't want a roaming plan for my mobile. I strongly prefer to not use my WiFi at home and connect the PC with a cable. That also saves electricity and microwaves. But who knows? Maybe there is also a PC app in the works. Then I could give more stars in my review. Sparda-Bank offerst the PC App because they WANTED TO. Postbank isn't planning one, because they DON'T WANT TO. I gave my list of reasons. The ONLY solution is a PC BestSign App. Thank you and be well
12 people found this review helpful
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A Google user
November 8, 2019
Was waiting postbank ID and password for 2 months, after that waiting 1 week for activation code to arrive, and after arguing with employees for that reason, they couldnt help, and told us to leave! Worst experience ever. And finally when i got everything needed, it doesnt work on this stupid app. It wont let me log in after trying 20 times. Closing the account and moving to another soon.
39 people found this review helpful
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What’s new

We are constantly working on adding new features to our app, optimizing existing features, and fixing any potential errors.