# Dio For Teachers vs Opticity Passenger

Dio For Teachers and Opticity Passenger are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Dio For Teachers ships an update fortnightly, Opticity Passenger every 4 weeks. The most recent releases landed on October 11, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Dio For Teachers | Opticity Passenger |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 4 weeks |
| Size | 39 MB | 56 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sagi Shalom](https://appshunter.io/developer/1704964281) | [LS LEGENDARY SOLUTIONS LTD](https://appshunter.io/developer/1444864449) |

## What reviewers say

### Dio For Teachers

[App page](https://appshunter.io/ios/app/dio-for-teachers/id6463775986)

**Features:** macOS Compatibility

**In-app purchases:** none


### Opticity Passenger

[App page](https://appshunter.io/ios/app/opticity-passenger/id6748337080)

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

**In-app purchases:** none


## Frequently asked questions

### Is Dio For Teachers free?

Dio For Teachers is free to download, with no in-app purchases.

### Is Opticity Passenger free?

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

### Do Dio For Teachers or Opticity Passenger have ads?

Neither Dio For Teachers nor Opticity Passenger shows ads.

### Which is updated more often, Dio For Teachers or Opticity Passenger?

Dio For Teachers ships an update fortnightly, and Opticity Passenger every 4 weeks. Most recently, Dio For Teachers was updated on October 11, 2026 and Opticity Passenger on October 24, 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.*