# DATEV SmartLogin vs ABUS One

DATEV SmartLogin and ABUS One both sit at 4.5 stars, but that hides the real split: 80% of DATEV SmartLogin's written reviews are positive against 66% of ABUS One's. DATEV SmartLogin also leads on ratings volume (265 vs 54). On price, rating, update cadence and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.5 for DATEV SmartLogin against 4.6 for ABUS One. Both are backed by a comparable volume of ratings — 265 and 54 respectively. Written reviews are what separate them: 80% of DATEV SmartLogin's written reviews are positive against 66% of ABUS One's.

DATEV SmartLogin ships an update every 3 weeks, ABUS One every 6 weeks. Both last shipped on September 24, 2026.

## The numbers

| Metric | DATEV SmartLogin | ABUS One |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (265 ratings)](https://appshunter.io/ios/app/datev-smartlogin/id943870921/reviews) | **[4.6 (54 ratings)](https://appshunter.io/ios/app/abus-one/id1670951723/reviews)** |
| Number of ratings | **265** | 54 |
| Positive reviews | **80.0% of reviews** | 65.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Monetization | Free | Free |
| Size | 39 MB | 298 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [DATEV eG](https://appshunter.io/developer/353479704) | [ABUS August Bremicker Söhne KG](https://appshunter.io/developer/1402043635) |

## What reviewers say

### DATEV SmartLogin

[App page](https://appshunter.io/ios/app/datev-smartlogin/id943870921)

This app provides secure and intuitive access to your confidential data within the DATEV online world. Simply scan a QR code with the app to log in to DATEV online applications. A password protects the app from unauthorized use.

**Highlights:** Secure QR code scanning for login, Intuitive and simple interface, Password protection for app access, Authentication for DATEV online services, Phishing prevention measures

**In-app purchases:** none


### ABUS One

[App page](https://appshunter.io/ios/app/abus-one/id1670951723)

Control your smart ABUS security devices from your smartphone or smartwatch. Effortlessly lock and unlock doors, manage access for others, and monitor device status. Integrates with various smart locks, key safes, and even surveillance cameras.

**Highlights:** Keyless locking and unlocking via app, Temporary or permanent access sharing, Centralized management of smart ABUS products, Integration with remote controls and keypads, Usage and battery status monitoring, Secure communication with SmartX technology

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is DATEV SmartLogin free?

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

### Is ABUS One free?

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

### Which has better reviews, DATEV SmartLogin or ABUS One?

ABUS One is rated higher. DATEV SmartLogin averages 4.5 out of 5 from 265 ratings, while ABUS One averages 4.6 from 54 ratings.

### Do DATEV SmartLogin or ABUS One have ads?

Neither DATEV SmartLogin nor ABUS One shows ads.

### Which is updated more often, DATEV SmartLogin or ABUS One?

DATEV SmartLogin ships an update every 3 weeks, and ABUS One every 6 weeks. Most recently, DATEV SmartLogin was updated on September 24, 2026 and ABUS One on September 24, 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.*