# Dark Sky Meter vs Temtop

The clearest difference is price: Temtop at Free against Dark Sky Meter's $1.99. Temtop also leads on ratings volume (80 vs 6) and update cadence (every 5 weeks vs every 3 months). Dark Sky Meter's advantage is rating (3.8 vs 2.9) and chart position (#183 vs unranked). On ads, in-app purchases, monetization model and device support there is nothing between them.

Temtop is free to download; Dark Sky Meter costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Dark Sky Meter holds the better App Store score, 3.8 against 2.9. That said, the two scores are not equally well evidenced: Temtop has 80 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 40% of Dark Sky Meter's written reviews are positive against 32% of Temtop's.

Dark Sky Meter ships an update every 3 months, Temtop every 5 weeks. The most recent releases landed on October 17, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Dark Sky Meter | Temtop |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[3.8 (6 ratings)](https://appshunter.io/ios/app/dark-sky-meter/id602989060/reviews)** | [2.9 (80 ratings)](https://appshunter.io/ios/app/temtop/id1439409326/reviews) |
| Number of ratings | 6 | **80** |
| Positive reviews | **40.4% of reviews** | 32.2% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Monetization | Free | Free |
| Best chart rank | **#183** | — |
| Size | 4 MB | 183 MB |
| Requires iOS | 15.6 | **15** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DDQ](https://appshunter.io/developer/418328467) | [Elitech Technology,Inc.](https://appshunter.io/developer/1455057713) |

## What reviewers say

### Dark Sky Meter

[App page](https://appshunter.io/ios/app/dark-sky-meter/id602989060)

**Currently charting:** #183 Top Paid · Utilities (US App Store)

This application utilizes your device's camera to measure the brightness of the night sky. The collected data can be optionally shared with scientific researchers worldwide.

**Highlights:** Measures sky brightness, Uses device camera, Optional data sharing, Contributes to scientific research

**Features:** Vision Pro support

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Dark Sky Meter free?

Dark Sky Meter costs $1.99, with no in-app purchases.

### Is Temtop free?

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

### Which has better reviews, Dark Sky Meter or Temtop?

Dark Sky Meter is rated higher. Dark Sky Meter averages 3.8 out of 5 from 6 ratings, while Temtop averages 2.9 from 80 ratings.

### Do Dark Sky Meter or Temtop have ads?

Neither Dark Sky Meter nor Temtop shows ads.

### Which is updated more often, Dark Sky Meter or Temtop?

Dark Sky Meter ships an update every 3 months, and Temtop every 5 weeks. Most recently, Dark Sky Meter was updated on October 17, 2026 and Temtop on October 16, 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.*