# O vs AlcoAlert

O and AlcoAlert 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.

O ships an update every 5 weeks, AlcoAlert every 3 weeks. The most recent releases landed on September 13, 2026 and August 19, 2026 respectively.

## The numbers

| Metric | O | AlcoAlert |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Size | 4 MB | 75 MB |
| Requires iOS | 15.5 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [O-TECH JAPAN](https://appshunter.io/developer/1219186631) | [日本アバカス株式会社](https://appshunter.io/developer/1704260565) |

## What reviewers say

### O

[App page](https://appshunter.io/ios/app/o-tech-ms/id1645041946)

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

**In-app purchases:** none


### AlcoAlert

[App page](https://appshunter.io/ios/app/alcoalert-e/id6463353996)

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

**In-app purchases:** none


## Frequently asked questions

### Is O free?

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

### Is AlcoAlert free?

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

### Do O or AlcoAlert have ads?

Neither O nor AlcoAlert shows ads.

### Which is updated more often, O or AlcoAlert?

O ships an update every 5 weeks, and AlcoAlert every 3 weeks. Most recently, O was updated on September 13, 2026 and AlcoAlert on August 19, 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.*