# OLB appTAN vs Postbank BestSign

The clearest difference is review sentiment: Postbank BestSign at 69% against OLB appTAN's 18%. Postbank BestSign also leads on rating (4.7 vs 3.0) and ratings volume (1.1K vs 9). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Postbank BestSign holds the better App Store score, 4.7 against 3.0. That said, the two scores are not equally well evidenced: Postbank BestSign has 1.1K ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 18% of OLB appTAN's written reviews are positive against 69% of Postbank BestSign's.

OLB appTAN ships an update every 9 months, Postbank BestSign every 2 months. Both last shipped on November 6, 2026.

## The numbers

| Metric | OLB appTAN | Postbank BestSign |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (9 ratings)](https://appshunter.io/ios/app/olb-apptan/id1441657819/reviews) | **[4.7 (1.1K ratings)](https://appshunter.io/ios/app/postbank-bestsign/id1442251022/reviews)** |
| Number of ratings | 9 | **1.1K** |
| Positive reviews | 17.6% of reviews | **68.5% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 28 MB | 81 MB |
| Requires iOS | 17.6 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Oldenburgische Landesbank AG](https://appshunter.io/developer/511948613) | [Postbank - eine Niederlassung der DB Privat- und Firmenkundenbank AG](https://appshunter.io/developer/330289564) |

## What reviewers say

### OLB appTAN

[App page](https://appshunter.io/ios/app/olb-apptan/id1441657819)

Securely approve your online banking transactions directly from your smartphone or tablet. This app simplifies and enhances the security of your digital banking activities.

**Highlights:** Direct transaction approval, Smartphone and tablet support, Secure online banking, Easy registration process, Activation via mail

**Features:** Vision Pro support

**In-app purchases:** none


### Postbank BestSign

[App page](https://appshunter.io/ios/app/postbank-bestsign/id1442251022)

This app provides a secure and convenient way to authorize transactions in online banking. It focuses solely on the BestSign security procedure, allowing for quick setup and easy login using passwords or biometrics.

**Highlights:** Secure order authorization, Dedicated BestSign procedure, Password login, Biometric login support, Separate security app

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Quick and reliable
- 💡 Logical and intuitive security mechanism

**What reviewers complain about**

- 🐛 Flaky QR code activation, causing app lockups
- 🐛 Unreliable functionality, often not working
- 🔒 Security design flaw with shared login credentials
- 🤯 Convoluted and frustrating user experience
- 🐛 Frequent crashes and login issues

**Reported bugs**

- QR code activation issues
- Frequent login failures and account access denials
- Crashes on app startup

**Requested features**

- Multi-language support
- Improved reliability and stability


## Frequently asked questions

### Is OLB appTAN free?

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

### Is Postbank BestSign free?

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

### Which has better reviews, OLB appTAN or Postbank BestSign?

Postbank BestSign is rated higher. OLB appTAN averages 3.0 out of 5 from 9 ratings, while Postbank BestSign averages 4.7 from 1.1K ratings.

### Do OLB appTAN or Postbank BestSign have ads?

Neither OLB appTAN nor Postbank BestSign shows ads.

### Which is updated more often, OLB appTAN or Postbank BestSign?

OLB appTAN ships an update every 9 months, and Postbank BestSign every 2 months. Most recently, OLB appTAN was updated on November 6, 2026 and Postbank BestSign on November 6, 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.*