# OpoLua vs Caverno

The clearest difference is update cadence: Caverno at every 2 days against OpoLua's every 7 months. OpoLua's advantage is device support (4 vs 2) and iOS requirement (15.0 vs 26.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

OpoLua ships an update every 7 months, Caverno every 2 days. Both last shipped on October 3, 2026.

## The numbers

| Metric | OpoLua | Caverno |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 2 days** |
| Monetization | Free | — |
| Size | 9 MB | 33 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad |
| Age rating | 12+ | 17+ |
| Developer | [Jason Morley](https://appshunter.io/developer/1711473431) | [Osamu Noguchi](https://appshunter.io/developer/457240927) |

## What reviewers say

### OpoLua

[App page](https://appshunter.io/ios/app/opolua/id1604029880)

This utility allows users to view and interact with files from Psion computers, including image files, scripts, and resources. It also supports listening to sound files and running OPL scripts and programs directly on compatible devices.

**Highlights:** View MBM image files, View OPL scripts, View AIF resources, Listen to sound files, Run OPL scripts and programs

**Features:** Game Controller support

**In-app purchases:** none


### Caverno

[App page](https://appshunter.io/ios/app/caverno/id6760192392)

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

**In-app purchases:** none


## Frequently asked questions

### Is OpoLua free?

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

### Is Caverno free?

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

### Do OpoLua or Caverno have ads?

Neither OpoLua nor Caverno shows ads.

### Which is updated more often, OpoLua or Caverno?

OpoLua ships an update every 7 months, and Caverno every 2 days. Most recently, OpoLua was updated on October 3, 2026 and Caverno 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.*