# Retain Archive vs OLM Converter · Viewer, Reader

The clearest difference is review sentiment: Retain Archive at 100% against OLM Converter · Viewer, Reader's 0%. Retain Archive also leads on in-app purchases (none vs 9). OLM Converter · Viewer, Reader's advantage is update cadence (weekly vs every 3 months). On price, ads, device support and iOS requirement 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. Retain Archive asks for nothing beyond the download.

Retain Archive ships an update every 3 months, OLM Converter · Viewer, Reader weekly. The most recent releases landed on October 29, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | Retain Archive | OLM Converter · Viewer, Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/retain-archive/id1144161812/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 8 MB | 24 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [OpenText](https://appshunter.io/developer/415355796) | [Rush Tools LLC](https://appshunter.io/developer/1896773547) |

## What reviewers say

### Retain Archive

[App page](https://appshunter.io/ios/app/retain-archive/id1144161812)

Access and manage archived business communications, including emails, social media, and mobile messages. Browse, search, and preview attachments from various platforms for case assessment and eDiscovery.

**Highlights:** Unified archiving of business communications, Access archived email, social media, and mobile data, Browse and search archived messages, Preview message attachments, View social media archives (WhatsApp, WeChat, LinkedIn, etc.)

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is Retain Archive free?

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

### Is OLM Converter · Viewer, Reader free?

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

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

Neither Retain Archive nor OLM Converter · Viewer, Reader shows ads.

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

Retain Archive ships an update every 3 months, and OLM Converter · Viewer, Reader weekly. Most recently, Retain Archive was updated on October 29, 2026 and OLM Converter · Viewer, Reader on November 1, 2026.

---

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