# ARK. vs Stamp Mail

The clearest difference is rating: Stamp Mail at 5.0 against ARK.'s 3.0. Stamp Mail also leads on iOS requirement (15.1 vs 26.0). ARK.'s advantage is in-app purchases (none vs 4). On price, ratings volume, update cadence and ads there is nothing between them.

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

Stamp Mail holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 3 respectively.

ARK. ships an update fortnightly, Stamp Mail weekly. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | ARK. | Stamp Mail |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/ark/id6578449302/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/stamp-mail/id6748666316/reviews)** |
| Number of ratings | 2 | **3** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | **Free** | Freemium |
| Size | 19 MB | 76 MB |
| Requires iOS | 26.0 | **15.1** |
| Devices | iPhone, Mac | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Creative Covenant, Inc.](https://appshunter.io/developer/1759541398) | [Stamp AI](https://appshunter.io/developer/1826931069) |

## What reviewers say

### ARK.

[App page](https://appshunter.io/ios/app/ark/id6578449302)

This app provides verifiable proof of human creation for studio musicians, focusing on tracking contributions and resolving disputes in song and production creation. It utilizes 360 technology to protect creator rights and ensure accurate royalty distribution, especially in response to AI threats.

**Highlights:** Verifiable proof of human creation, Tracks contributions and rights, Resolves creation disputes, Protects creator rights, Facilitates accurate royalty distribution, Studio musician focus

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is ARK. free?

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

### Is Stamp Mail free?

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

### Which has better reviews, ARK. or Stamp Mail?

Stamp Mail is rated higher. ARK. averages 3.0 out of 5 from 2 ratings, while Stamp Mail averages 5.0 from 3 ratings.

### Do ARK. or Stamp Mail have ads?

Neither ARK. nor Stamp Mail shows ads.

### Which is updated more often, ARK. or Stamp Mail?

ARK. ships an update fortnightly, and Stamp Mail weekly. Most recently, ARK. was updated on November 4, 2026 and Stamp Mail on October 30, 2026.

---

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