# StampDoc vs LinkBox

The clearest difference is update cadence: LinkBox at every 3 days against StampDoc's every 2 months. StampDoc's advantage is iOS requirement (15 vs 17.0). 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.

StampDoc ships an update every 2 months, LinkBox every 3 days. The most recent releases landed on October 4, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | StampDoc | LinkBox |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/stampdoc/id6753040013/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 days** |
| Monetization | Free | — |
| Size | 67 MB | 1 MB |
| Requires iOS | **15** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Anyelo Moreno](https://appshunter.io/developer/1842233376) | [晶 赵](https://appshunter.io/developer/1869023821) |

## What reviewers say

### StampDoc

[App page](https://appshunter.io/ios/app/stampdoc/id6753040013)

Easily sign PDFs and images, create custom digital stamps, and manage your documents securely from your iPhone or iPad. Streamline your workflow by going fully digital, eliminating the need for printing and scanning.

**Highlights:** Sign PDFs and images, Create custom digital stamps, Signature editor and scanner, Import and reuse stamps, Built-in PDF and image viewer, Save and share signed files

**Features:** macOS Compatibility

**In-app purchases:** none


### LinkBox

[App page](https://appshunter.io/ios/app/linkbox/id6771622958)

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

**In-app purchases:** none


## Frequently asked questions

### Is StampDoc free?

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

### Is LinkBox free?

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

### Do StampDoc or LinkBox have ads?

Neither StampDoc nor LinkBox shows ads.

### Which is updated more often, StampDoc or LinkBox?

StampDoc ships an update every 2 months, and LinkBox every 3 days. Most recently, StampDoc was updated on October 4, 2026 and LinkBox on October 7, 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.*