# Altos vs Simpliinspect

The clearest difference is iOS requirement: Simpliinspect at 11.0 against Altos's 14.4. 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 3 weeks. Both last shipped on November 7, 2026.

## The numbers

| Metric | Altos | Simpliinspect |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/altos-air-analyzer-co2-check/id1562104053/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free | — |
| Size | 43 MB | 33 MB |
| Requires iOS | 14.4 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Woodenshark LLC](https://appshunter.io/developer/1236101386) | [SIMPLIBIZZ TECHNOLOGIES PRIVATE LIMITED](https://appshunter.io/developer/1681771070) |

## What reviewers say

### Altos

[App page](https://appshunter.io/ios/app/altos-air-analyzer-co2-check/id1562104053)

Monitor your indoor air quality to optimize your environment for better focus and well-being. This app connects to a CO2 meter to provide real-time data and alerts, helping you maintain optimal air for productivity and rest.

**Highlights:** Real-time CO2 level updates, Brain Fuel graph visualization, Fresh air push notifications, Real-time home screen widget, CO2 concentration statistics

**Features:** macOS Compatibility

**In-app purchases:** none


### Simpliinspect

[App page](https://appshunter.io/ios/app/simpliinspect/id6448033498)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Altos free?

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

### Is Simpliinspect free?

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

### Do Altos or Simpliinspect have ads?

Neither Altos nor Simpliinspect shows ads.

### Which is updated more often, Altos or Simpliinspect?

Altos ships an update every 3 weeks, and Simpliinspect every 3 weeks. Most recently, Altos was updated on November 7, 2026 and Simpliinspect on November 7, 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.*