# MIR Spiro vs Slice

The clearest difference is device support: Slice at 3 against MIR Spiro's 1. MIR Spiro's advantage is iOS requirement (12.4 vs 15.0). On price, update cadence, 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.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 19, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | MIR Spiro | Slice |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/mir-spiro/id947868756/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 16.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | — |
| Size | 23 MB | 288 MB |
| Requires iOS | **12.4** | 15.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [MIR Medical International Research](https://appshunter.io/developer/1010662698) | [Roy Rodenhauser](https://appshunter.io/developer/1818681968) |

## What reviewers say

### MIR Spiro

[App page](https://appshunter.io/ios/app/mir-spiro/id947868756)

This iOS app enables real-time spirometry and oximetry testing on iPads for healthcare providers. It measures key lung function parameters and blood oxygen saturation, offering pediatric incentives and data transfer capabilities.

**Highlights:** Real-time spirometry testing, Real-time oximetry testing, Measures FVC, FEV1, PEF, %SpO2, Pulse Rate, Pediatric incentive feature, Data transfer for backup, HL7 standard support

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

**In-app purchases:** none


### Slice

[App page](https://appshunter.io/ios/app/slice-ar/id6746819867)

**In-app purchases:** none


## Frequently asked questions

### Is MIR Spiro free?

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

### Is Slice free?

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

### Do MIR Spiro or Slice have ads?

Neither MIR Spiro nor Slice shows ads.

### Which is updated more often, MIR Spiro or Slice?

MIR Spiro ships an update every 2 months, and Slice every 2 months. Most recently, MIR Spiro was updated on September 19, 2026 and Slice on October 11, 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.*