# Spar Key vs Kaiser Partner MobileTAN

The clearest difference is update cadence: Kaiser Partner MobileTAN at every 2 months against Spar Key's every 19 months. Spar Key's advantage is iOS requirement (12.4 vs 15.0). 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.

Spar Key ships an update every 19 months, Kaiser Partner MobileTAN every 2 months. Both last shipped on October 26, 2026.

## The numbers

| Metric | Spar Key | Kaiser Partner MobileTAN |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 19 months | **Every 2 months** |
| Size | 44 MB | 7 MB |
| Requires iOS | **12.4** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sparkasse Bank Malta plc](https://appshunter.io/developer/1448464000) | [Kaiser Partner Privatbank AG](https://appshunter.io/developer/1479192796) |

## What reviewers say

### Spar Key

[App page](https://appshunter.io/ios/app/spar-key/id1449579604)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Kaiser Partner MobileTAN

[App page](https://appshunter.io/ios/app/kaiser-partner-mobiletan/id1479192797)

**In-app purchases:** none


## Frequently asked questions

### Is Spar Key free?

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

### Is Kaiser Partner MobileTAN free?

Kaiser Partner MobileTAN is free to download, with no in-app purchases.

### Do Spar Key or Kaiser Partner MobileTAN have ads?

Neither Spar Key nor Kaiser Partner MobileTAN shows ads.

### Which is updated more often, Spar Key or Kaiser Partner MobileTAN?

Spar Key ships an update every 19 months, and Kaiser Partner MobileTAN every 2 months. Most recently, Spar Key was updated on October 26, 2026 and Kaiser Partner MobileTAN on October 26, 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.*