# Hydra Agent vs QuickSign eSign

The clearest difference is in-app purchases: Hydra Agent at none against QuickSign eSign's 2. QuickSign eSign's advantage is update cadence (fortnightly vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. QuickSign eSign sells 2 in-app purchases, starting at $2.99 per 7 days. Hydra Agent asks for nothing beyond the download.

Hydra Agent ships an update every 2 months, QuickSign eSign fortnightly. The most recent releases landed on September 24, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Hydra Agent | QuickSign eSign |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Size | 38 MB | 19 MB |
| Requires iOS | **16.0** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [DIALOGA GROUP, LLC](https://appshunter.io/developer/441721427) | [Eren Arda Carboga](https://appshunter.io/developer/1759948038) |

## What reviewers say

### Hydra Agent

[App page](https://appshunter.io/ios/app/hydra-agent/id1340796237)

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

**In-app purchases:** none


### QuickSign eSign

[App page](https://appshunter.io/ios/app/quicksign-esign-pdf-scanner/id6758280295)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $2.99 | per 7 days |
| Yearly Premium | $24.99 | per year |


## Frequently asked questions

### Is Hydra Agent free?

Hydra Agent is free to download, with no in-app purchases.

### Is QuickSign eSign free?

QuickSign eSign is free to download, with in-app purchases available.

### Do Hydra Agent or QuickSign eSign have ads?

Neither Hydra Agent nor QuickSign eSign shows ads.

### Which is updated more often, Hydra Agent or QuickSign eSign?

Hydra Agent ships an update every 2 months, and QuickSign eSign fortnightly. Most recently, Hydra Agent was updated on September 24, 2026 and QuickSign eSign on September 22, 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.*