# Breatherliser vs i

The clearest difference is review sentiment: i at 67% against Breatherliser's 14%. i also leads on update cadence (every 3 weeks vs every 4 months). Breatherliser's advantage is iOS requirement (8.0 vs 15.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Breatherliser ships an update every 4 months, i every 3 weeks. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Breatherliser | i |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (4 ratings)](https://appshunter.io/ios/app/i-sober/id1447339897/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | 14.3% of reviews | **66.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 12 MB | 83 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Andrej Podlubnyj](https://appshunter.io/developer/583628251) | [SENTECH KOREA CORP](https://appshunter.io/developer/1446527193) |

## What reviewers say

### Breatherliser

[App page](https://appshunter.io/ios/app/breatherliser/id688242393)

This app is for entertainment purposes only and cannot accurately measure blood alcohol content. It allows users to input personal details and drink information to estimate when BAC might be acceptable for driving, and includes a prank alarm.

**Highlights:** BAC estimation for entertainment, Prank alarm clock, Personal parameter input (gender, weight, age), Drink input (amount, type), BAC calculation formulas (Widmark, Watson)

**Features:** macOS Compatibility

**In-app purchases:** none


### i

[App page](https://appshunter.io/ios/app/i-sober/id1447339897)

This app connects to a Bluetooth breathalyzer to manage and share test results. It features a self-diagnosis system for sensor quality checks and allows users to verify tests with a photo. Results can be shared via SMS, SNS, and email.

**Highlights:** Bluetooth connectivity with breathalyzer, Data management and sharing, Self Diagnosis System (SDS) for sensor quality, Camera mode for test verification, Share results via SMS, SNS, and email, Location information sharing

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

**In-app purchases:** none


## Frequently asked questions

### Is Breatherliser free?

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

### Is i free?

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

### Do Breatherliser or i have ads?

Neither Breatherliser nor i shows ads.

### Which is updated more often, Breatherliser or i?

Breatherliser ships an update every 4 months, and i every 3 weeks. Most recently, Breatherliser was updated on October 21, 2026 and i 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.*