# Stamp Mail vs GCM Mail

The clearest difference is in-app purchases: GCM Mail at none against Stamp Mail's 4. GCM Mail also leads on update cadence (every 5 days vs every 2 weeks) and iOS requirement (13.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. Stamp Mail sells 4 in-app purchases, starting at $20.00 per month. GCM Mail asks for nothing beyond the download.

Stamp Mail ships an update every 2 weeks, GCM Mail every 5 days. The most recent releases landed on July 4, 2026 and May 19, 2026 respectively.

## The numbers

| Metric | Stamp Mail | GCM Mail |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/stamp-mail/id6748666316/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 5 days** |
| Monetization | Freemium | — |
| Size | 76 MB | 31 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Stamp AI, Inc.](https://appshunter.io/developer/1826931069) | [GCM TECH SOLUTIONS](https://appshunter.io/developer/1281520213) |

## What reviewers say

### Stamp Mail

[App page](https://appshunter.io/ios/app/stamp-mail/id6748666316)

This AI-powered email client automates tasks like drafting replies, prioritizing messages, and extracting to-dos. It offers an agent to retrieve information and reorganize your inbox using plain English commands. A special mode allows quick review and approval of automated changes.

**Highlights:** Automated email drafting, Email prioritization, To-do extraction, Email summarization, Information retrieval via AI agent, Inbox reorganization, Approve/reject agent changes

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stamp Individual (Monthly) | $20.00 | per month |
| Stamp Business (Monthly) | $50.00 | per month |
| Stamp Individual (Annual) | $191.99 | per year |
| Stamp Business (Annual) | $479.99 | per year |


### GCM Mail

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Stamp Mail free?

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

### Is GCM Mail free?

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

### Do Stamp Mail or GCM Mail have ads?

Neither Stamp Mail nor GCM Mail shows ads.

### Which is updated more often, Stamp Mail or GCM Mail?

Stamp Mail ships an update every 2 weeks, and GCM Mail every 5 days. Most recently, Stamp Mail was updated on July 4, 2026 and GCM Mail on May 19, 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.*