# Redspira vs MMS

Redspira and MMS 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.

Redspira ships an update every 4 weeks, MMS every 6 weeks. The most recent releases landed on October 13, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Redspira | MMS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/redspira/id1444779369/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 6 weeks |
| Monetization | Free | — |
| Size | 68 MB | 21 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Certuit Consultores, S.C.](https://appshunter.io/developer/1128576004) | [Multiservicios Médicos Santander, S.A. de C.V.](https://appshunter.io/developer/1450727874) |

## What reviewers say

### Redspira

[App page](https://appshunter.io/ios/app/redspira/id1444779369)

This app provides real-time air quality monitoring using a network of low-cost sensors. It aims to raise awareness about air pollution's impact on health and well-being in Mexicali, displaying data visually with color-coded AQI.

**Highlights:** Real-time air quality monitoring, Low-cost sensor network, Visual color-coded AQI map, Health and well-being awareness, Integration with government stations, AQI NowCast and Aire y Salud Index

**Features:** macOS Compatibility

**In-app purchases:** none


### MMS

[App page](https://appshunter.io/ios/app/mms/id1450727875)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Redspira free?

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

### Is MMS free?

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

### Do Redspira or MMS have ads?

Neither Redspira nor MMS shows ads.

### Which is updated more often, Redspira or MMS?

Redspira ships an update every 4 weeks, and MMS every 6 weeks. Most recently, Redspira was updated on October 13, 2026 and MMS on October 4, 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.*