# Temtop vs Vsensor

Temtop and Vsensor both sit at 2.9 stars, but that hides the real split: 60% of Vsensor's written reviews are positive against 32% of Temtop's. Temtop's advantage is ratings volume (80 vs 8). On price, rating, update cadence and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 2.9 for Temtop against 3.0 for Vsensor. That said, the two scores are not equally well evidenced: Temtop has 80 ratings behind it against 8, so its average is the more settled of the two. Written reviews are what separate them: 32% of Temtop's written reviews are positive against 60% of Vsensor's.

Temtop ships an update every 5 weeks, Vsensor every 3 weeks. The most recent releases landed on October 8, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Temtop | Vsensor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.9 (80 ratings)](https://appshunter.io/ios/app/temtop/id1439409326/reviews) | **[3.0 (8 ratings)](https://appshunter.io/ios/app/vsensor/id1635688804/reviews)** |
| Number of ratings | **80** | 8 |
| Positive reviews | 32.2% of reviews | **60.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 183 MB | 70 MB |
| Requires iOS | **15** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Elitech Technology,Inc.](https://appshunter.io/developer/1455057713) | [健成 李](https://appshunter.io/developer/1055522601) |

## What reviewers say

### Temtop

[App page](https://appshunter.io/ios/app/temtop/id1439409326)

This app detects formaldehyde, PM2.5, and TVOC using advanced sensors. It provides accurate and reliable environmental data for your home or workspace.

**Highlights:** Formaldehyde detection, PM2.5 detection, TVOC detection, British Dart electrochemical sensor, US TEMTOP laser particle sensor, Accurate and reliable data

**Features:** Vision Pro support

**In-app purchases:** none


### Vsensor

[App page](https://appshunter.io/ios/app/vsensor/id1635688804)

This utility app displays environmental data like PAR, CO2, and CO concentrations directly on your phone. It requires compatible external meters to function.

**Highlights:** Displays PAR data, Shows CO2 concentration, Reads CO concentration, Works with external meters, Professional tool

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Temtop free?

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

### Is Vsensor free?

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

### Which has better reviews, Temtop or Vsensor?

Vsensor is rated higher. Temtop averages 2.9 out of 5 from 80 ratings, while Vsensor averages 3.0 from 8 ratings.

### Do Temtop or Vsensor have ads?

Neither Temtop nor Vsensor shows ads.

### Which is updated more often, Temtop or Vsensor?

Temtop ships an update every 5 weeks, and Vsensor every 3 weeks. Most recently, Temtop was updated on October 8, 2026 and Vsensor 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.*