# GCM Mail vs KeyGuide

The clearest difference is iOS requirement: GCM Mail at 13.0 against KeyGuide's 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.

## The numbers

| Metric | GCM Mail | KeyGuide |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 days | — |
| Size | 31 MB | 0 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [GCM TECH SOLUTIONS](https://appshunter.io/developer/1281520213) | [David Long](https://appshunter.io/developer/6794790595) |

## What reviewers say

### GCM Mail

[App page](https://appshunter.io/ios/app/gcm-mail/id6749802646)

**Features:** macOS Compatibility

**In-app purchases:** none


### KeyGuide

[App page](https://appshunter.io/ios/app/keyguide/id6794790593)

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

**In-app purchases:** none


## Frequently asked questions

### Is GCM Mail free?

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

### Is KeyGuide free?

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

### Do GCM Mail or KeyGuide have ads?

Neither GCM Mail nor KeyGuide shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*