# Unblu Agent vs Let's Sign

The clearest difference is update cadence: Unblu Agent at every 6 months against Let's Sign's every 26 months. Unblu Agent also leads on iOS requirement (13.0 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.

Unblu Agent ships an update every 6 months, Let's Sign every 26 months. The most recent releases landed on May 18, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Unblu Agent | Let's Sign |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 26 months |
| Size | 38 MB | 90 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [unblu inc.](https://appshunter.io/developer/796493411) | [SwissSign AG](https://appshunter.io/developer/966220255) |

## What reviewers say

### Unblu Agent

[App page](https://appshunter.io/ios/app/unblu-agent/id1436713924)

**Features:** macOS Compatibility

**In-app purchases:** none


### Let's Sign

[App page](https://appshunter.io/ios/app/lets-sign/id6473448862)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Unblu Agent free?

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

### Is Let's Sign free?

Let's Sign is free to download, with no in-app purchases.

### Do Unblu Agent or Let's Sign have ads?

Neither Unblu Agent nor Let's Sign shows ads.

### Which is updated more often, Unblu Agent or Let's Sign?

Unblu Agent ships an update every 6 months, and Let's Sign every 26 months. Most recently, Unblu Agent was updated on May 18, 2026 and Let's Sign on September 12, 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.*