# OpenDisplay vs Bifolium

The clearest difference is in-app purchases: OpenDisplay at none against Bifolium's 2. OpenDisplay also leads on iOS requirement (15.0 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Bifolium sells 2 in-app purchases, starting at $2.99 per month. OpenDisplay asks for nothing beyond the download.

OpenDisplay ships an update every 8 days, Bifolium weekly. The most recent releases landed on October 14, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | OpenDisplay | Bifolium |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (14 ratings)](https://appshunter.io/ios/app/opendisplay/id6780264891/reviews)** | — |
| Number of ratings | **14** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 days | **Weekly** |
| Monetization | Free | — |
| Size | 1 MB | 74 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 17+ |
| Developer | [Philip Poloczek](https://appshunter.io/developer/1333036183) | [Fernando Flores](https://appshunter.io/developer/6775064236) |

## What reviewers say

### OpenDisplay

[App page](https://appshunter.io/ios/app/opendisplay/id6780264891)

Transform your iPhone or iPad into a genuine second display for your Mac. This open-source solution allows you to extend your screen space, keeping essential apps visible. Connect via USB for minimal latency or Wi-Fi for easy setup.

**Highlights:** Use iPhone/iPad as a second Mac display, Connect via USB or Wi-Fi, Retina-sharp rendering, Touch and scroll support, Portrait or landscape orientation, Private by design, no tracking

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

**In-app purchases:** none


### Bifolium

[App page](https://appshunter.io/ios/app/bifolium-markdown-reader/id6812735570)

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bifolium Monthly | $2.99 | per month |
| Unlock Bifolium | $19.99 | one-time |


## Frequently asked questions

### Is OpenDisplay free?

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

### Is Bifolium free?

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

### Do OpenDisplay or Bifolium have ads?

Neither OpenDisplay nor Bifolium shows ads.

### Which is updated more often, OpenDisplay or Bifolium?

OpenDisplay ships an update every 8 days, and Bifolium weekly. Most recently, OpenDisplay was updated on October 14, 2026 and Bifolium on October 3, 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.*