# GCM Mail vs SimpleMail by WK

The clearest difference is ads: GCM Mail at none against SimpleMail by WK's shown. GCM Mail also leads on update cadence (every 5 days vs fortnightly) and iOS requirement (13.0 vs 17.0). On price, 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.

GCM Mail ships an update every 5 days, SimpleMail by WK fortnightly. The most recent releases landed on October 5, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | GCM Mail | SimpleMail by WK |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 5 days** | Fortnightly |
| Size | 31 MB | 4 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [GCM TECH SOLUTIONS](https://appshunter.io/developer/1281520213) | [Wonkyoung Seo](https://appshunter.io/developer/6775065699) |

## What reviewers say

### GCM Mail

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

**Features:** macOS Compatibility

**In-app purchases:** none


### SimpleMail by WK

[App page](https://appshunter.io/ios/app/simplemail-by-wk/id6783971542)

**Features:** 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 SimpleMail by WK free?

SimpleMail by WK is free to download, with no in-app purchases.

### Do GCM Mail or SimpleMail by WK have ads?

SimpleMail by WK shows ads; GCM Mail does not.

### Which is updated more often, GCM Mail or SimpleMail by WK?

GCM Mail ships an update every 5 days, and SimpleMail by WK fortnightly. Most recently, GCM Mail was updated on October 5, 2026 and SimpleMail by WK on October 18, 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.*