# All Documents Viewer & Reader vs Mailbox

The clearest difference is in-app purchases: All Documents Viewer & Reader at none against Mailbox's 1. All Documents Viewer & Reader also leads on device support (3 vs 1). Mailbox's advantage is update cadence (every 5 days vs every 5 months). On price, ads and iOS requirement there is nothing between them.

Both are free to download. Mailbox sells 1 one-off in-app purchase. All Documents Viewer & Reader asks for nothing beyond the download.

All Documents Viewer & Reader ships an update every 5 months, Mailbox every 5 days. The most recent releases landed on October 14, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | All Documents Viewer & Reader | Mailbox |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 5 days** |
| Size | 3 MB | 1 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Constantin-Vlad Carasevici](https://appshunter.io/developer/1845430122) | [Jhomar Maravillas](https://appshunter.io/developer/6783703541) |

## What reviewers say

### All Documents Viewer & Reader

[App page](https://appshunter.io/ios/app/all-documents-viewer-and-reader/id6753880254)

**In-app purchases:** none


### Mailbox

[App page](https://appshunter.io/ios/app/mailbox-mbox-viewer/id6792488577)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Unlimited | $4.99 | one-time |


## Frequently asked questions

### Is All Documents Viewer & Reader free?

All Documents Viewer & Reader is free to download, with no in-app purchases.

### Is Mailbox free?

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

### Do All Documents Viewer & Reader or Mailbox have ads?

Neither All Documents Viewer & Reader nor Mailbox shows ads.

### Which is updated more often, All Documents Viewer & Reader or Mailbox?

All Documents Viewer & Reader ships an update every 5 months, and Mailbox every 5 days. Most recently, All Documents Viewer & Reader was updated on October 14, 2026 and Mailbox on October 10, 2026.

---

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