# Temtop vs Smidge

The clearest difference is update cadence: Smidge at every 6 days against Temtop's every 5 weeks. Smidge also leads on iOS requirement (13.0 vs 15). On price, ads, 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.

Temtop ships an update every 5 weeks, Smidge every 6 days. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Temtop | Smidge |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.9 (82 ratings)](https://appshunter.io/ios/app/temtop/id1439409326/reviews)** | — |
| Number of ratings | **82** | — |
| Positive reviews | 32.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 6 days** |
| Monetization | Free | — |
| Size | 183 MB | 17 MB |
| Requires iOS | 15 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Elitech Technology,Inc.](https://appshunter.io/developer/1455057713) | [Siddharth Venkatesan](https://appshunter.io/developer/1877482154) |

## 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


### Smidge

[App page](https://appshunter.io/ios/app/smidge-unit-converter/id6771526364)

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

**In-app purchases:** none


## Frequently asked questions

### Is Temtop free?

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

### Is Smidge free?

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

### Do Temtop or Smidge have ads?

Neither Temtop nor Smidge shows ads.

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

Temtop ships an update every 5 weeks, and Smidge every 6 days. Most recently, Temtop was updated on October 24, 2026 and Smidge on October 28, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*