# FastID vs Docmark

The clearest difference is review sentiment: Docmark at 100% against FastID's 50%. Docmark also leads on update cadence (monthly vs every 24 months). FastID's advantage is in-app purchases (none vs 1). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Docmark sells 1 one-off in-app purchase. FastID asks for nothing beyond the download.

FastID ships an update every 24 months, Docmark monthly. The most recent releases landed on October 4, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | FastID | Docmark |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 24 months | **Monthly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 46 MB | 46 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Changing Information Technology Inc.](https://appshunter.io/developer/329855504) | [CometDust Technology (Guangzhou) Co., Ltd](https://appshunter.io/developer/1763733479) |

## What reviewers say

### FastID

[App page](https://appshunter.io/ios/app/fastid/id1558782763)

Easily capture and edit ID photos for online services. Automatically detect, crop, and correct images, and add custom watermarks to protect your photos before sharing.

**Highlights:** Automatic ID detection and capture, Image correction and cropping, Customizable watermark text, Photo preview and editing, Offline usage, Share to other apps

**Features:** macOS Compatibility

**In-app purchases:** none


### Docmark

[App page](https://appshunter.io/ios/app/docmark/id6711330172)

This app helps you manage and secure your credentials with custom watermarks. It prioritizes privacy with offline processing and optional iCloud synchronization. Organize, categorize, and batch edit your documents for enhanced security.

**Highlights:** Offline credential processing, Customizable watermarks, Batch editing and sorting, Local and iCloud storage, Organize and categorize credentials

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $2.99 | one-time |


## Frequently asked questions

### Is FastID free?

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

### Is Docmark free?

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

### Do FastID or Docmark have ads?

Neither FastID nor Docmark shows ads.

### Which is updated more often, FastID or Docmark?

FastID ships an update every 24 months, and Docmark monthly. Most recently, FastID was updated on October 4, 2026 and Docmark 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.*