# protel dSignature vs DIRS21 Live

The clearest difference is update cadence: DIRS21 Live at every 3 weeks against protel dSignature's every 6 weeks. DIRS21 Live also leads on device support (3 vs 1). protel dSignature's advantage is iOS requirement (14.0 vs 16.0). On price, ads and in-app purchases there is nothing between them.

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

protel dSignature ships an update every 6 weeks, DIRS21 Live every 3 weeks. The most recent releases landed on October 25, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | protel dSignature | DIRS21 Live |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Size | 22 MB | 92 MB |
| Requires iOS | **14.0** | 16.0 |
| Devices | iPad | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [protel hotelsoftware GmbH](https://appshunter.io/developer/417393124) | [TourOnline AG](https://appshunter.io/developer/376618544) |

## What reviewers say

### protel dSignature

[App page](https://appshunter.io/ios/app/protel-dsignature/id1523804839)

**Features:** Vision Pro support

**In-app purchases:** none


### DIRS21 Live

[App page](https://appshunter.io/ios/app/dirs21-live/id6502383541)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is protel dSignature free?

protel dSignature is free to download, with no in-app purchases.

### Is DIRS21 Live free?

DIRS21 Live is free to download, with no in-app purchases.

### Do protel dSignature or DIRS21 Live have ads?

Neither protel dSignature nor DIRS21 Live shows ads.

### Which is updated more often, protel dSignature or DIRS21 Live?

protel dSignature ships an update every 6 weeks, and DIRS21 Live every 3 weeks. Most recently, protel dSignature was updated on October 25, 2026 and DIRS21 Live on October 4, 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.*