# Theia Cirrus vs Vsensor

The clearest difference is review sentiment: Vsensor at 60% against Theia Cirrus's 0%. Vsensor also leads on rating (3.0 vs 2.0) and update cadence (every 3 weeks vs every 20 months). Theia Cirrus's advantage is iOS requirement (12.0 vs 15.1). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Vsensor holds the better App Store score, 3.0 against 2.0. That said, the two scores are not equally well evidenced: Vsensor has 8 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of Theia Cirrus's written reviews are positive against 60% of Vsensor's.

Theia Cirrus ships an update every 20 months, Vsensor every 3 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | Theia Cirrus | Vsensor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (1 ratings)](https://appshunter.io/ios/app/theia-cirrus/id1625641459/reviews) | **[3.0 (8 ratings)](https://appshunter.io/ios/app/vsensor/id1635688804/reviews)** |
| Number of ratings | 1 | **8** |
| Positive reviews | 0.0% of reviews | **60.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 20 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 52 MB | 70 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Illum Horticulture](https://appshunter.io/developer/1575946647) | [健成 李](https://appshunter.io/developer/1055522601) |

## What reviewers say

### Theia Cirrus

[App page](https://appshunter.io/ios/app/theia-cirrus/id1625641459)

Manage and control your LED grow lights remotely from anywhere in the world. The app offers an easy setup wizard and a synchronized dashboard to control multiple zones, rooms, or buildings.

**Highlights:** Cloud-based control, Global remote access, Easy setup wizard, Synchronized dashboard, Control multiple zones/rooms/buildings

**Features:** macOS Compatibility

**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 Theia Cirrus free?

Theia Cirrus 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, Theia Cirrus or Vsensor?

Vsensor is rated higher. Theia Cirrus averages 2.0 out of 5 from 1 ratings, while Vsensor averages 3.0 from 8 ratings.

### Do Theia Cirrus or Vsensor have ads?

Neither Theia Cirrus nor Vsensor shows ads.

### Which is updated more often, Theia Cirrus or Vsensor?

Theia Cirrus ships an update every 20 months, and Vsensor every 3 weeks. Most recently, Theia Cirrus was updated on November 3, 2026 and Vsensor on November 3, 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.*