# iSpirometry vs BrisU

The clearest difference is rating: iSpirometry at 3.0 against BrisU's 1.5. iSpirometry also leads on iOS requirement (8.0 vs 13). On price, review sentiment, ratings volume and update cadence there is nothing between them.

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

iSpirometry holds the better App Store score, 3.0 against 1.5. Both are backed by a comparable volume of ratings — 4 and 2 respectively. Written reviews split almost evenly too, at 0% and 0% positive.

iSpirometry ships an update every 2 months, BrisU every 5 weeks. The most recent releases landed on September 29, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | iSpirometry | BrisU |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (4 ratings)](https://appshunter.io/ios/app/ispirometry/id1367895022/reviews)** | [1.5 (2 ratings)](https://appshunter.io/ios/app/brisu/id1621026363/reviews) |
| Number of ratings | **4** | 2 |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | Free | Free |
| Size | 6 MB | 40 MB |
| Requires iOS | **8.0** | 13 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [MIR Medical International Research](https://appshunter.io/developer/1010662698) | [Contec Medical Systems Co., Ltd.](https://appshunter.io/developer/908936493) |

## What reviewers say

### iSpirometry

[App page](https://appshunter.io/ios/app/ispirometry/id1367895022)

This app works with a specific spirometer device to measure key respiratory health metrics. It provides real-time data, intuitive guidance for performing tests, and stores results with additional notes for easy interpretation and sharing.

**Highlights:** Bluetooth spirometer connectivity, Real-time respiratory measurements, Intuitive test performance animation, Comparison to target values, Quality control grading, Test result storage and notes, PDF report generation

**Features:** macOS Compatibility

**In-app purchases:** none


### BrisU

[App page](https://appshunter.io/ios/app/brisu/id1621026363)

This medical app helps users monitor their lung function by connecting to compatible devices. It records test data, allowing users to understand their lung health status. Medical advice should always be sought from a doctor.

**Highlights:** Lung function monitoring, Data recording via Bluetooth, Peripheral device integration, Lung health status understanding, Auxiliary functions

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

**In-app purchases:** none


## Frequently asked questions

### Is iSpirometry free?

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

### Is BrisU free?

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

### Which has better reviews, iSpirometry or BrisU?

iSpirometry is rated higher. iSpirometry averages 3.0 out of 5 from 4 ratings, while BrisU averages 1.5 from 2 ratings.

### Do iSpirometry or BrisU have ads?

Neither iSpirometry nor BrisU shows ads.

### Which is updated more often, iSpirometry or BrisU?

iSpirometry ships an update every 2 months, and BrisU every 5 weeks. Most recently, iSpirometry was updated on September 29, 2026 and BrisU on September 14, 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.*