# Sign PDF Documents vs hkinfinite

The clearest difference is in-app purchases: hkinfinite at none against Sign PDF Documents's 6. hkinfinite also leads on update cadence (weekly vs every 3 weeks) and iOS requirement (12.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Sign PDF Documents sells 6 in-app purchases, starting at $4.99 per 7 days. hkinfinite asks for nothing beyond the download.

Sign PDF Documents ships an update every 3 weeks, hkinfinite weekly. The most recent releases landed on October 24, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Sign PDF Documents | hkinfinite |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (55 ratings)](https://appshunter.io/ios/app/sign-pdf-documents-esign-app/id1661630551/reviews)** | — |
| Number of ratings | **55** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Freemium | — |
| Size | 89 MB | 39 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NextPixel apps](https://appshunter.io/developer/1584487280) | [Makemark Intelligence Global Holdings Limited](https://appshunter.io/developer/1554432453) |

## What reviewers say

### Sign PDF Documents

[App page](https://appshunter.io/ios/app/sign-pdf-documents-esign-app/id1661630551)

Easily sign documents like PDFs and other files directly from your device. Scan, capture, or create custom signatures to apply to your files. Manage and share all your signed documents with this offline app.

**Highlights:** Sign documents from files, Sign documents from iCloud, Sign documents from photos, Scan and sign documents, Create and capture signatures, Edit PDFs with signatures, Share signed documents, Manage signed documents

**Features:** macOS Compatibility, Apple Watch app, iMessage stickers, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PDF Signature weekly plan | $4.99 | per 7 days |
| Sign PDF Documents with Esign | $4.99 | per 7 days |
| Sign PDF Documents with Esign | $5.99 | per 7 days |
| E-signature documents & PDF | $6.99 | per 7 days |
| Document sign now - Monthly | $7.99 | per month |
| PDF Signature - eSign App | $9.99 | per month |


### hkinfinite

[App page](https://appshunter.io/ios/app/hkinfinite/id6478644997)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sign PDF Documents free?

Sign PDF Documents is free to download, with in-app purchases available.

### Is hkinfinite free?

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

### Do Sign PDF Documents or hkinfinite have ads?

Neither Sign PDF Documents nor hkinfinite shows ads.

### Which is updated more often, Sign PDF Documents or hkinfinite?

Sign PDF Documents ships an update every 3 weeks, and hkinfinite weekly. Most recently, Sign PDF Documents was updated on October 24, 2026 and hkinfinite on October 15, 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.*