# ワイヤレスCO2モニター vs TabTasu

The clearest difference is ads: ワイヤレスCO2モニター at none against TabTasu's shown. ワイヤレスCO2モニター also leads on iOS requirement (8.0 vs 26.5). TabTasu's advantage is update cadence (every 3 days vs every 11 months). On price, in-app purchases and device support there is nothing between them.

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

ワイヤレスCO2モニター ships an update every 11 months, TabTasu every 3 days. The most recent releases landed on October 10, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | ワイヤレスCO2モニター | TabTasu |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 11 months | **Every 3 days** |
| Size | 4 MB | 39 MB |
| Requires iOS | **8.0** | 26.5 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Step One Limited](https://appshunter.io/developer/646296997) | [Shohei Ohno](https://appshunter.io/developer/549975204) |

## What reviewers say

### ワイヤレスCO2モニター

[App page](https://appshunter.io/ios/app/co2/id1162038614)

**Features:** macOS Compatibility

**In-app purchases:** none


### TabTasu

[App page](https://appshunter.io/ios/app/tabtasu-browser-tab-manager/id1542205043)

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

**In-app purchases:** none


## Frequently asked questions

### Is ワイヤレスCO2モニター free?

ワイヤレスCO2モニター is free to download, with no in-app purchases.

### Is TabTasu free?

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

### Do ワイヤレスCO2モニター or TabTasu have ads?

TabTasu shows ads; ワイヤレスCO2モニター does not.

### Which is updated more often, ワイヤレスCO2モニター or TabTasu?

ワイヤレスCO2モニター ships an update every 11 months, and TabTasu every 3 days. Most recently, ワイヤレスCO2モニター was updated on October 10, 2026 and TabTasu on October 17, 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.*