# NAPT vs CASTO Events

The clearest difference is iOS requirement: CASTO Events at 15.1 against NAPT's 17.0. On price, ads, in-app purchases and device support 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 | NAPT | CASTO Events |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Size | 75 MB | 44 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [NAPT Foundation, Inc.](https://appshunter.io/developer/1710446720) | [California Association of School Transportation Officials](https://appshunter.io/developer/1876948816) |

## What reviewers say

### NAPT

[App page](https://appshunter.io/ios/app/napt/id6468681668)

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

**In-app purchases:** none


### CASTO Events

[App page](https://appshunter.io/ios/app/casto-events/id6759113871)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is NAPT free?

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

### Is CASTO Events free?

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

### Do NAPT or CASTO Events have ads?

Neither NAPT nor CASTO Events shows ads.

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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.*