# Proofn vs Clusterix Email

The clearest difference is update cadence: Clusterix Email at every 2 weeks against Proofn's every 4 weeks. Clusterix Email also leads on iOS requirement (15.6 vs 26.0). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Proofn against 5.0 for Clusterix Email. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Proofn ships an update every 4 weeks, Clusterix Email every 2 weeks. The most recent releases landed on June 20, 2026 and August 22, 2026 respectively.

## The numbers

| Metric | Proofn | Clusterix Email |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/proofn/id1551267874/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/clusterix-email/id6478543435/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 2 weeks** |
| Monetization | Free | Free |
| Size | 35 MB | 60 MB |
| Requires iOS | 26.0 | **15.6** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Myabuy, LLC](https://appshunter.io/developer/1346618603) | [innoscripta SE](https://appshunter.io/developer/1546207706) |

## What reviewers say

### Proofn

[App page](https://appshunter.io/ios/app/proofn/id1551267874)

This app allows users to edit or delete unread emails and group messages, even after sending. It also supports inline video, photo, and voice note attachments, offering enhanced privacy and control over communications.

**Highlights:** Edit unread emails and attachments, Delete unread messages, Inline video, photo, and voice note attachments, Private group messaging, End-to-end and zero-access encryption, Organize messages by sender or group

**In-app purchases:** none


### Clusterix Email

[App page](https://appshunter.io/ios/app/clusterix-email/id6478543435)

Streamline your communication with an advanced email client. Features include a signature editor, customizable templates, an AI assistant for composing and managing emails, and scheduled sending. Organize and view your messages with an intuitive interface.

**Highlights:** Customizable signature editor, Intuitive email editor, Diverse customizable templates, AI assistant for composing and inbox management, Scheduled email sending, User-friendly email viewing interface

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Proofn free?

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

### Is Clusterix Email free?

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

### Which has better reviews, Proofn or Clusterix Email?

Proofn and Clusterix Email are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Proofn or Clusterix Email have ads?

Neither Proofn nor Clusterix Email shows ads.

### Which is updated more often, Proofn or Clusterix Email?

Proofn ships an update every 4 weeks, and Clusterix Email every 2 weeks. Most recently, Proofn was updated on June 20, 2026 and Clusterix Email on August 22, 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.*