# AVIOBOOK TECH vs CrewAlert TOD

The clearest difference is update cadence: CrewAlert TOD at fortnightly against AVIOBOOK TECH's every 2 months. CrewAlert TOD also leads on device support (3 vs 1) and iOS requirement (15.2 vs 17.6). 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.

AVIOBOOK TECH ships an update every 2 months, CrewAlert TOD fortnightly. The most recent releases landed on October 9, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | AVIOBOOK TECH | CrewAlert TOD |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Size | 220 MB | 56 MB |
| Requires iOS | 17.6 | **15.2** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [AvioVision](https://appshunter.io/developer/568400284) | [Jeppesen Systems AB](https://appshunter.io/developer/391351392) |

## What reviewers say

### AVIOBOOK TECH

[App page](https://appshunter.io/ios/app/aviobook-tech/id1336964720)

**In-app purchases:** none


### CrewAlert TOD

[App page](https://appshunter.io/ios/app/crewalert-tod/id1479542477)

**In-app purchases:** none


## Frequently asked questions

### Is AVIOBOOK TECH free?

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

### Is CrewAlert TOD free?

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

### Do AVIOBOOK TECH or CrewAlert TOD have ads?

Neither AVIOBOOK TECH nor CrewAlert TOD shows ads.

### Which is updated more often, AVIOBOOK TECH or CrewAlert TOD?

AVIOBOOK TECH ships an update every 2 months, and CrewAlert TOD fortnightly. Most recently, AVIOBOOK TECH was updated on October 9, 2026 and CrewAlert TOD on October 6, 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.*