Retain Archive vs OLM Converter · Viewer, Reader
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Retain Archive
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.
- 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.)
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Micro Focus Retain Unified Archiving provides unified archiving of all business communication including email, social media, and mobile communication data for case assessment, search, and eDiscovery. The Retain App provides users and administrators direct access to view, browse, search, and these business communications. • Access all the archived accounts you manage • Browse messages in the archived accounts • Preview message attachments • View archive social media messages from WhatsApp, WeChat, LinkedIn, Twitter, Facebook, SharePoint, and Instagram For more information about Retain Unified Archiving, see https://www.microfocus.com/products/retain-unified-archiving/.
OLM Converter · Viewer, Reader
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.
- 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
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Have an OLM file you cannot open? OLM Converter opens Outlook for Mac archives right on your Mac, iPhone, and iPad, lets you read everything inside, and converts it to the formats you actually use. Open a .olm export, browse every folder, and read your mail, contacts, calendar, notes, and tasks. Then convert and export the parts you need, all on your device. WHAT YOU CAN DO • Open and read .olm archives from Outlook for Mac, no Outlook needed • Browse the full folder tree, and search mail by subject, sender, or text • View contacts, calendar events, notes, and tasks • See every attachment and save it to Files • Convert and export to MBOX, EML, CSV, PDF, HTML, vCard, and ICS • Export a whole mailbox, or just the folder you choose EXPORT FORMATS • MBOX, or a zipped folder tree of MBOX files • EML, one message per file, with the folder structure preserved • PDF for reading and sharing • CSV of the message list • A browsable HTML archive • vCard (.vcf) contacts and ICS (.ics) calendar events BUILT RIGHT • Runs on Mac, iPhone, and iPad • Everything happens on your device. Your archive never leaves it • No account, no sign in, nothing is uploaded • Handles large, multi gigabyte archives • Fast, reliable, and faithful to the original PERFECT FOR • Opening an .olm file on your Mac without Outlook • Anyone moving away from Outlook for Mac • Moving your mail into another app that reads MBOX or EML, such as Apple Mail or Thunderbird • Archiving, exporting, or simply reading an old .olm file OLM Converter is an independent app and is not affiliated with, endorsed by, or sponsored by any email software vendor. OLM and Outlook are referenced only to indicate the file format the app works with. Privacy Policy: https://rush.tools/privacy Terms of Use: https://rush.tools/terms
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Retain Archive | OLM Converter · Viewer, Reader |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 14.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 8 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | OpenText | Rush Tools LLC |
Customer experience
Retain Archive
OLM Converter · Viewer, Reader
In-app purchases
Retain Archive
No in-app purchases
OLM Converter · Viewer, Reader
- Pro Weekly3 Days trial$4.997 Days
- Pro Weekly$9.997 Days
- Pro Annual$19.991 Year
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- Pro Annual$29.991 Year
- Pro Annual2 variants$39.991 Year
- Pro Annual$49.991 Year
- Pro Annual$79.991 Year
- Pro Lifetime$59.99
Questions
Is Retain Archive free?
Is OLM Converter · Viewer, Reader free?
Do Retain Archive or OLM Converter · Viewer, Reader have ads?
Which is updated more often, Retain Archive or OLM Converter · Viewer, Reader?
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