# Opto vs Piazza23

The clearest difference is device support: Opto at 2 against Piazza23's —. Opto also leads on iOS requirement (12.2 vs 15.0). On price 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.

## The numbers

| Metric | Opto | Piazza23 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 2.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 3 months | — |
| Monetization | Free | — |
| Size | 166 MB | 39 MB |
| Requires iOS | **12.2** | 15.0 |
| Devices | **iPhone, iPod** | — |
| Age rating | 4+ | 17+ |
| Developer | [Payment Technologies S.R.L](https://appshunter.io/developer/1421270958) | [MG Proget Group 1 srl](https://appshunter.io/developer/1018173581) |

## What reviewers say

### Opto

[App page](https://appshunter.io/ios/app/opto/id1421270959)

Revolutionize your coffee breaks with a lightning-fast digital payment system. Connect to nearby coffee dispensers via light, select your drink, and enjoy entertainment while you sip. Manage your e-wallet, track purchases, and even gift coffee to friends.

**Highlights:** Fast coffee purchases, Light-based dispenser connection, In-app entertainment, Purchase history, E-wallet management, Credit top-up via card or coin, Gift coffee to friends

**Features:** macOS Compatibility

**In-app purchases:** none


### Piazza23

[App page](https://appshunter.io/ios/app/piazza23/id6504112898)

**In-app purchases:** none


## Frequently asked questions

### Is Opto free?

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

### Is Piazza23 free?

Piazza23 is free to download, with no in-app purchases.

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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.*