# OLM Converter · Viewer, Reader vs Mailbox

The clearest difference is device support: OLM Converter · Viewer, Reader at 4 against Mailbox's 1. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. OLM Converter · Viewer, Reader sells 8 in-app purchases, starting at $4.99 per 7 days and Mailbox sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

OLM Converter · Viewer, Reader ships an update weekly, Mailbox every 5 days. The most recent releases landed on November 1, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | OLM Converter · Viewer, Reader | Mailbox |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 24 MB | 1 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Rush Tools LLC](https://appshunter.io/developer/1896773547) | [Jhomar Maravillas](https://appshunter.io/developer/6783703541) |

## What reviewers say

### OLM Converter · Viewer, Reader

[App page](https://appshunter.io/ios/app/olm-converter-viewer-reader/id6781821148)

Easily open, read, and convert Outlook for Mac archive files (.olm) on your devices. Browse mail, contacts, and calendar entries, then export them to various formats like MBOX, PDF, and CSV without needing Outlook.

**Highlights:** Open .olm archives without Outlook, Read mail, contacts, calendar, notes, tasks, Browse full folder tree and search mail, Convert to MBOX, EML, PDF, CSV, HTML, vCard, ICS, Export entire mailboxes or selected folders, Process large archives on-device

**Features:** Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly | $4.99 | per 7 days |
| Pro Weekly | $9.99 | per 7 days |
| Pro Annual | $19.99 | per year |
| Pro Annual | $29.99 | per year |
| Pro Annual | $39.99 | per year |
| Pro Annual | $49.99 | per year |
| Pro Annual | $79.99 | per year |
| Pro Lifetime | $59.99 | one-time |


### 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 OLM Converter · Viewer, Reader free?

OLM Converter · Viewer, Reader is free to download, with in-app purchases available.

### Is Mailbox free?

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

### Do OLM Converter · Viewer, Reader or Mailbox have ads?

Neither OLM Converter · Viewer, Reader nor Mailbox shows ads.

### Which is updated more often, OLM Converter · Viewer, Reader or Mailbox?

OLM Converter · Viewer, Reader ships an update weekly, and Mailbox every 5 days. Most recently, OLM Converter · Viewer, Reader was updated on November 1, 2026 and Mailbox on October 24, 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.*