# Infinity Signature Capture vs Zig.ai

The clearest difference is update cadence: Zig.ai at fortnightly against Infinity Signature Capture's every 2 months. Infinity Signature Capture's advantage is iOS requirement (6.0 vs 15.1). 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.

Infinity Signature Capture ships an update every 2 months, Zig.ai fortnightly. The most recent releases landed on October 2, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Infinity Signature Capture | Zig.ai |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.3 (3 ratings)](https://appshunter.io/ios/app/infinity-signature-capture/id1003412835/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 4 MB | 56 MB |
| Requires iOS | **6.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [RDM Infinity, LLC](https://appshunter.io/developer/541967106) | [Zig AI](https://appshunter.io/developer/1896759399) |

## What reviewers say

### Infinity Signature Capture

[App page](https://appshunter.io/ios/app/infinity-signature-capture/id1003412835)

Capture signatures effortlessly on your mobile device. Add custom disclaimers and notes to each signature before emailing or printing the document as a PDF.

**Highlights:** Touch and sign interface, Custom disclaimer option, Add notes to signatures, Email with attached signature, Print-ready PDF generation, Direct printer support

**Features:** macOS Compatibility

**In-app purchases:** none


### Zig.ai

[App page](https://appshunter.io/ios/app/zigai/id6770636697)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Infinity Signature Capture free?

Infinity Signature Capture is free to download, with no in-app purchases.

### Is Zig.ai free?

Zig.ai is free to download, with no in-app purchases.

### Do Infinity Signature Capture or Zig.ai have ads?

Neither Infinity Signature Capture nor Zig.ai shows ads.

### Which is updated more often, Infinity Signature Capture or Zig.ai?

Infinity Signature Capture ships an update every 2 months, and Zig.ai fortnightly. Most recently, Infinity Signature Capture was updated on October 2, 2026 and Zig.ai on October 13, 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.*