# GuardKey Viewer vs FD MFT

The clearest difference is update cadence: FD MFT at monthly against GuardKey Viewer's every 3 months. GuardKey Viewer's advantage is iOS requirement (9.0 vs 13.0). 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.

GuardKey Viewer ships an update every 3 months, FD MFT monthly. Both last shipped on October 2, 2026.

## The numbers

| Metric | GuardKey Viewer | FD MFT |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Size | 75 MB | 29 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Changing Information Technology Inc.](https://appshunter.io/developer/329855504) | [FutureDial Inc.](https://appshunter.io/developer/1163960008) |

## What reviewers say

### GuardKey Viewer

[App page](https://appshunter.io/ios/app/guardkey-viewer/id768572273)

**In-app purchases:** none


### FD MFT

[App page](https://appshunter.io/ios/app/fd-mft/id6448082163)

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

**In-app purchases:** none


## Frequently asked questions

### Is GuardKey Viewer free?

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

### Is FD MFT free?

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

### Do GuardKey Viewer or FD MFT have ads?

Neither GuardKey Viewer nor FD MFT shows ads.

### Which is updated more often, GuardKey Viewer or FD MFT?

GuardKey Viewer ships an update every 3 months, and FD MFT monthly. Most recently, GuardKey Viewer was updated on October 2, 2026 and FD MFT on October 2, 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.*