# ChatProof vs OLM Converter · Viewer, Reader

The clearest difference is in-app purchases: ChatProof at none against OLM Converter · Viewer, Reader's 3. OLM Converter · Viewer, Reader's advantage is update cadence (every 5 days vs every 3 weeks) and device support (4 vs 2). On price and ads there is nothing between them.

Both are free to download. OLM Converter · Viewer, Reader sells 3 in-app purchases, starting at $4.99 per 7 days. ChatProof asks for nothing beyond the download.

ChatProof ships an update every 3 weeks, OLM Converter · Viewer, Reader every 5 days. The most recent releases landed on September 25, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | ChatProof | OLM Converter · Viewer, Reader |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Monetization | — | Free with in-app purchases |
| Size | 1 MB | 24 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, Mac | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [KRISHNA PINNAMANENI](https://appshunter.io/developer/1880298048) | [Rush Tools LLC](https://appshunter.io/developer/1896773547) |

## What reviewers say

### ChatProof

[App page](https://appshunter.io/ios/app/chatproof/id6773136944)

**Features:** 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, calendars, and tasks, 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, Search mail by subject, sender, text, Convert to MBOX, EML, PDF, CSV, HTML, vCard, ICS, Export entire mailboxes or selected folders, Works offline on device

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly | $4.99 | per 7 days |
| Pro Annual | $39.99 | per year |
| Pro Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is ChatProof free?

ChatProof 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 ChatProof or OLM Converter · Viewer, Reader have ads?

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

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

ChatProof ships an update every 3 weeks, and OLM Converter · Viewer, Reader every 5 days. Most recently, ChatProof was updated on September 25, 2026 and OLM Converter · Viewer, Reader on October 5, 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.*